u/BrowserHuman

Candidates:

Radiation Roy (Real Name: Roy Travich, Class: Silver Age) is a radiation-based villain and former Legion reject from the Legion of Super-Villains. He doesn't do much besides fill out the ranks of the LSV, but is one of their most consistent members.

Ra's al Ghul (Class: Reboot) is a famously immortal Green Arrow villain who tussles with the Legion during the Reboot after impersonating Leland McCauley. He's very much a different hero's villain made an antagonist to the Legion, but it's a natural fit.

Also, my bad, Ra's al Ghul isn't a Green Arrow villain, he's a Superman villain.

Doctor Regulus (Real Name: Zaxton Regulus, Class: Silver Age) is a monologuing, over-the-top masked super-villain who serves primarily as a rival to Sun Boy, coming back again and again throughout the original continuity and also appearing in the Reboot.

The Resource Raiders (Class: Bronze Age) are basically just mooks for the Legion to fight in the build-up to Earthwar, led by a giant sentient brain. They end up being puppets of the Khunds, who are in turn puppets of the Dark Circle, who are in turn puppets of the real villain.

Rogarth (Real Name: Clave Rogarth, Class: Silver Age) is a member of the Taurus Gang with Kryptonian-level super-strength. That's pretty much it.

Ron-Karr (Class: Silver Age) is a sympathetic member of the Legion of Super-Villains with the power to turn flat, debuting as a Legion reject only a year before the release of the book Flat Stanley. He takes a heroic turn during the Five Year Gap as a member of the resistance force against the Dominators, and makes a similar heroic pivot in the Animated Series, where he's a Chameleon Boy-like shapeshifter.

Roxxas (Real Name: Kivun Roxxas, Class: Silver Age) is the space-pirate who massacred Element Lad's people, and an iconic villain used sparingly enough to be great as a shockingly dark Silver Age villain, the engine for a complex Bronze Age character piece, and as the first main villain of the Five Years Later era.

R'Xalim (Class: Bronze Age) is a doctor at Medicus One who treats Brainiac 5 and Matter-Eater Lad during their temporary insanity before turning bad and becoming a one-shot villain.

Results:

Quicksand: 133

Quanto: 8

Qwardians: 1

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Quanto (Class: Silver Age) is the most sympathetic member of the Taurus Gang, with the power to turn into a beam of pure light and bounce around at super-speed.

Quicksand (Real Name: Anjelika Dugensa, Class: Bronze Age) was Pulsar Stargrave's female assistant with the powers to generate pools of sinking quicksand. She and Holdur were largely created to fill out a classic Luthor-Tessmacher-Otis dynamic with Stargrave that was so popular at the time. What became of her precisely is unknown, but her Who's Who entry reveals her to be an assassin who tried to take out Stargrave before becoming his assistant. After the battle with Stargrave on Colu, she and Holdur vanished off-world and went into hiding. She later briefly appears as Holdur's partner in the reboot. (Insert user comments about missed potential here.)

Results:

Persuader: 121

The Progenitor/The Progeny: 31

Pulsar Stargrave: 14

Phantom Lad: 6

Also shout-out to u/THEVrilDox, who chose to f**k Pulsar (presumably Stargrave, for his fashion sense), marry Psycho-Warrior (because they can purportedly fix him), and kill Prophet because he's so whiney.

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Persuader (Real Name: Nyeun Chun Ti, Class: Silver Age) needs no introduction, a founding member of the Fatal Five and the closest thing the Five has to a normal human, a gangland enforcer with a powerful Atomic Axe that's supposedly a remnant from the sixth World War. He's also the only major Legion villain to appear in live action thanks to Smallville. (My prediction is that he'll get the most votes)

Phantom Lad (Real Name: Solon Darga, Class: Bronze Age) is a member of the Legion of Super-Rejects and is easily the most forgettable member of the group; only he and Chameleon Kid never appeared again. He didn't have any real advantages over Phantom Girl either; he just thought he was stronger. (I don't see how even the Super-Reject fans can love this guy.)

Pharoxx (Class: Bronze Age) was Princess Projectra's jealous cousin who seized the throne in combat and tried to kill the Legion. Later, he aided the Legion of Super-Villains in their attack on Orando, only for them to interrogate and kill them. (Both the build-up to the Great Darkness and the Baxter Era are beloved, so I expect a fair showing for the Prince of Orando.)

The Progenitor (Real Name: >!Jan Arrah!<, Class: Reboot) will be sharing a spot with his creations, the Progeny, since they both start with the same letter and act as one villainous force. They serve as antagonists for the Legion during the Legion Lost mini-series, resulting in the reveal that the so-called Progenitor is >!an insane, immortal Element Lad who kills Monstress. !<(I imagine I'll get a few reboot-heads who pick these guys, since the Blight was so successful.)

Prophet (Real Name: Father Sven Kalikos, Class: Bronze Age) is part of the Omen-Prophet storyline I've given up trying to make heads or tails of.

The Psycho-Warrior (Real Name: Rejik Thomak, Class: Bronze Age) is a tech-based villain who preys on fears, like a really lame version of Scarecrow. The only thing notable about him is that he revealed the exact dates and causes of the Kents' deaths, leading to Superboy's departure from the Legion in 1980.

Pulsar Stargrave (Real Name: Vril Dox, Class: Bronze Age) is what's left of Brainiac in the 31st century, reborn in the heart of a star, who menaces his descendant and frames Ultra Boy for murder. In various iterations he's been brought to the modern times and has only been associated with Brainiac, at one point serving as an assistant for Larfleeze the Orange Lantern. (A good competitor for Persuader's lot. Insert talk of missed potential here.)

Pulsar (Real Name: Benjamin Day, Class: Bronze Age) is one of only two Karate Kid mini-series villains that deserves a mention, since Commander Blud, Master Hand, and the Gyro-Master are simply awful, and he literally just borrowed Major Disaster from other comics. A former assassin forced back into a life of crime when his family is threatened, he eventually finds himself working with Karate Kid when the tables turn. I'll always have a soft spot for him; I think that the Karate Kid mini-series is over-hated. Still, nobody's going to vote for this guy.

Results:

Ontiir: 87

Omega: 31

Ol-Vir: 25

Organus: 2

Omen: 2

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Sorry for taking so long for this letter.

Candidates:

Ol-Vir (Class: Bronze Age) was a Daxamite enslaved by Darkseid who stayed loyal to his Apokoliptian master. Ultimately he went for revenge along with the Legion of Super-Villains before eventually being destroyed by Darkseid when he was no longer useful.

Omega (Class: Bronze Age) was a creation of the Miracle Machine created by Brainiac 5 in a madness caused by Pulsar Stargrave who destroyed the second Legion clubhouse. Thankfully Matter-Eater Lad has guys like him for breakfast, and that's more literal than you'd think.

Omen (Class: Bronze Age) is... kind of incomprehensible. I haven't actually read the story where he appears, but something tells me that he wouldn't be much easier to understand even if I had read that story.

Ontiir (Class: Bronze Age) was a reptilian slow-burn villain introduced in Earthwar as a Science Police Officer, only to be revealed as a pivotal agent of the Dark Circle.

Organus (Class: Bronze Age) attacks Medicus One in an early 80s story during the build-up to the Great Darkness Saga. He absorbs energy and is probably someone's favorite because he's one of the first villains defeated by Blok.

Slim pickings.

Results:

Nemesis Kid: 210

Nardo: 3

Neutrax: 0 (But with plenty of honorable mentions)

Shout out to u/HotLlama_8001, who chose to f**k Nemesis Kid (do his powers work in the context of... never mind), marry Novak for the money, and kill Neutrax.

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Nemesis Kid (Real Name: Hart Druiter, Class: Silver Age) was a Legion imposter on behalf of the Khunds who was revealed, leading to a life of crime as a founding member of the Legion of Super-Villains. During his career, he appeared with each iteration of the present-day LSV, briefly fought Karate Kid solo in the past, and was ultimately the one to kill Val on Orando before Princess Projectra shows him how much of a head-turner she can really be.

Neutrax (Real Name: Wi Kan Muur, Class: Bronze Age) is a half-Professor X, half-Cyclops member of the League of Super-Assassins with the power to shoot a beat of energy that neutralizes powers and sits in a floating chair. He later joins the Legion of Super-Villains.

Norak (Real Name: Norak Kun, Class: Bronze Age) is a Naltorian genetic surgeon and one of the five founders of the Dark Circle who I believe is only named in the Who's Who articles.

Results:

Mordru: 171

Doctor Mayavale: 8

Micro Lad: 7

Mano: 6 (It is a crime how few votes this character got)

Doctor Mantis Morlo: 5

Mystelor: 3

Magpie: 2

Metalla: 2

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Alright, time to describe a dozen Glup Shitto Lads (characters nobody cares about except that one commenter whose first Legion story had them as the villain) only for basically everybody to vote for Mano or Mordru.

Magnetic Kid I (Real Name: Xaxan, Class: Silver Age) was a Murran infiltrator with the power to magnetically control organic life-forms. The only things this guy really does is be hard to talk about thanks to Pol taking the name later on.

Magno Lad (Real Name: Kort Grezz, Class: Bronze Age) is a Braalian magnetic-controller who was one of the Legion of Super-Rejects before joining the Legion of Super-Villains.

Magpie (Real Name: Merg Gaterra, Class: Bronze Age) is a master thief (implied to be a rival of Benn Pares) who tried to steal a time chip from the Legion during a Bronze Age story.

Mano (Class: Silver Age) is a member of the Fatal Five who destroyed his own world with his touch of death. After that fantastic introductory feat, he then proceeds to never lay a hand on a Legionnaire, except when he's accidentally set his hand to only burn them for some reason. Since then, he's popped up every time the Fatal Five has until the Dark Man Saga, after which he failed to get into the new Fatal Five. Eventually he works for Starfinger III during Five Years Later, and becomes more sympathetic during the Reboot.

Doctor Mantis Morlo (Class: Silver Age) is a fun recurring bad guy who created an army of Chemoids to take over Orando, and then returns building muck monster in the sewer in the aftermath of Earthwar. He also shows up in the Reboot for an issue. My favorite moment is in his original two-parter, where he's about to blow up the Earth with a death ray, but first has to paint a big red target on the Earth to that he knows where to aim his death ray.

Doctor Mar Londo (Class: Adaptational) is in the comics but is only a villain in the animated series. Combining aspects of both Tyr and Mantis Morlo from the comics, Mar Londo experiments on his own son, creating Timber Wolf, and creates an army of Chemoid-like Bio Golems, eventually framing Timber Wolf for his own murder.

Doctor Mayavale (Class: Bronze Age) is a weird monk who has an obsession with karmic balance after reincarnation, and turns to evil, and has six synthetic arms... honestly, he's one of those weird Bronze Age concepts that most people blame the Silver Age for.

Lady Memory (Class: Bronze Age) was a priestess of the mountain people of Talok VIII who sought to overthrow the civilized parts of Talok VIII, ultimately facing off against Shadow Lass. She was later redeemed, marrying Shadow Lass's brother.

Micro Lad (Real Name: Lalo Muldroon, Class: Bronze Age) was an Imskian nationalist who joined up with the Legion of Super-Rejects, masterminded the replacement of Shrinking Violet by Yera, and ultimately joined the Legion of Super-Villains. He's got quite a resume for a relatively weak villain.

Mist Master (Real Name: Yer Sti-Tuan, Class: Silver Age) is a member of the League of Super-Assassins who can turn into any gas. He later joins the Legion of Super-Villains.

Modulus (Class: Silver Age) is a strange being with the power of a living planet, called Modo, who chooses to use his immense powers to be a drug dealer.

Molecule Master (Class: Bronze Age) is one of those characters that was put into the story to fulfill an Adult Legion prophecy as the one who killed Reflecto. Long story short, he was an android who tried to steal the Miracle Machine and was later revealed to be a pawn of the Time Trapper.

Mordru the Merciless (Class: Silver Age) is a master of black magic with control over Zerox. One of the most powerful beings in the universe and at times the Legion's deadliest foe (competing only with the likes of Darkseid, the Time Trapper, Glorith, the Infinite Man, and almost Pulsar Stargrave), he is responsible for one of Jim Shooter's best two-parters, masterminded Earthwar, and also was responsible for some annoying stories in the early 70s. Nowadays he's often considered a Doctor Fate villain or something, but real ones know that he's a Legion foe through and through.

Mystelor (Real Name: Zera Oliet, Class: Silver Age) was a Titanian telepath and the only female member of the Taurus Gang. She was frequently hit on by Shagrek but had feelings for Quanto, and was eventually impersonated by Dream Girl. Eventually she reformed and got with Quanto. Good for her.

Results:

Lightning Lord: 183

Luck Lords: 6

Leland McCauley: 5

Lazon: 4

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Laurel Kent (Class: Bronze Age) was apparently a Legion Academy applicant descended from Superman. In reality, she was a Manhunter sleeper agent - although there is some uncertainty about whether Laurel was always a Manhunter or simply kidnapped and replaced by a Manhunter imposter.

Lazon (Real Name: Chey Nu, Class: Bronze Age) was a member of the League of Super-Assassins with the power to turn into living light. He later joined up with the Legion of Super-Villains during their takeover of Orando and was captured.

Leland McCauley (Class: Silver Age) is the second-richest man in the world and a rival of R. J. Brande's. Although usually a minor annoyance, he's been the backer for both hero and villain teams across his history.

Praetor Lemnos (Class: Threeboot) is a memory-corrupting science who masterminds several events of the Threeboot and is the architect of the Terra Firma group.

Lightning Lord (Real Name: Mekt Ranzz, Class: Silver Age) is the one constant across basically every iteration of the Legion of Super-Villains, the wicked brother of Lightning Lad and Light(ning) Lass who adds a personal vendetta to Legion encounters. He does find some peace in the 5 Years Later era and the animated show, but in every other iteration he's pretty much bad to the bone.

Lucifer 7 (Class: Bronze Age) is a minor bad guy that the first five Legionnaires fight in a flashback mission in Secrets of the Legion of Super-Heroes. He's not particularly noteworthy.

The Luck Lords (Class: Silver Age) are god-like entities with a love of chaos, who live on the (sometimes) casino planet of Ventura. Their original incarnations are imposters, later incarnations try to kill Lightning Lord and do a third or fourth pass on the weird Phase thing from L.E.G.I.O.N., and it's all rather complicated.

Results:

Khunds: 69

Kenz Nuhor: 13

Kharlak: 3

Kantuu: 2

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Kantuu (Class: Bronze Age) is a literally genie in a bottle accidentally freed by a retired Bouncing Boy during the late 70s. There's not much more to him than that.

Kenz Nuhor (Class: Silver Age) is an ex-boyfriend of Dream Girl's who attacks and tries to kill Star Boy. Acting in self-defense, Star Boy kills Nuhor when no other choice is left to him. While cleared by the Science Police, he has to stand trial by the Legion and is ultimately expelled in my personal favorite Silver Age Legion story, "The Legionnaire Who Killed".

Kharlak (Class: Bronze Age), also spelled Karlak, is a Khund gladiator who vows revenge on the Legion after a tussle with Timber Wolf during the Baxter series. Apparently he actually appears briefly in the Supergirl show.

The Khunds (Class: Silver Age) is a conquering empire that menaces the Legion multiple times, most notably as the main invasion force of Earthwar. They've produced several minor rogues for the Legion thanks to their mastery of cybernetics, and even served as the benefactors for Nemesis Kid during his initial infiltration of the Legion.

Others: Feel free to vote for other characters not listed here; this is just who I could think of.

Results:

Jungle King: 23

The Jet-Belt Bandit: 1 (A rather clever suggestion by u/swarthmoreburke)

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Jungle King (Class: Silver Age) is a Legion reject with the power to control animals who tries to assemble a Legion of Super-Monsters to kill the Legion of Super-Heroes. He ends up losing control of one and dying.

Technically speaking, Jungle King kind of violates the rules. A later story introduces his brother, Doctor Marden King, which implies that Jungle King is his actual, legal name. And when he turns to villainy, he takes on the title of Monster Master. But since Jungle King is the name he's best known for, and all other candidates break the rules more, he's the one I feel most confident putting forth.

Others: If you can come up with a Legion Villain whose most commonly used name starts with a 'J', I'm all ears.

Results:

Infinite Man: 109

The Inquisitor: 3

Immune: 2

Imperiex: 1

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too

Candidates:

Immune (Real Name: Murleen Dreu, Class: Bronze Age) is the last survivor of a chemical weapon that left him immune to all disease. He became an associate of Doctor Regulus when the mad doctor used him to release a shrinking virus against R. J. Brande and the Legion as revenge for Brande's involvement in the aforementioned chemical weapon. Would have been great to see him have to fight Infectious Lass.

Imperiex (Class: Adaptational) is a boring Superman villain from the comics who is turned into a recurring threat for the Legion in the animated series, in which he is a warlord from the 41st century who basically creates an alliance of bad guys to conquer the United Planets. He ends up being a fake-out for Brainiac, but this version is a New God of Apokolips, likely with some relation to Darkseid.

The Infinite Man (Real Name: Jaxton Rugarth, Class: Bronze Age) was an explorer involved in an experiment with new time travel technology before he emerged a being of infinite knowledge and power with a vendetta against Rond Vidar. He later returned a few times as a recurring Legion rogue, and its unique in being basically an ordinary person elevated to the level of the Time Trapper or Mordru.

The Ikonns (Class: Threeboot) are a red-skinned warrior race of aliens who fight the Legion during the Threeboot.

Others: Feel free to vote for someone not listed.

Results:

Hunter II: 35

Hagga: 11

Holdur: 5

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too

Candidates:

Hagga (Class: Bronze Age) was the mother of King Voxv, the Queen Mother and Sorceress Royal of Orando, and the grandmother of Princess Projectra, as well as the princess's magic tutor. Hagga, however, favored her other grandchild Pharoxx over Projectra, and so aided him in a plot to kill the young princess.

Holdur (Class: Bronze Age) is a large, ape-like minion of Pulsar Stargrave who serves as some very weak muscle for the resurrected Brainiac.

Hunter I (Real Name: Otto Orion, Class: Silver Age) is a trophy-hunting Kraven rip-off who kidnaps the Legionnaires to hunt for sport before dying to a bomb he planted on his chest to go off if he lost the game.

Hunter II (Real Name: Adam Orion, Class: Bronze Age) is the son of the first Hunter who goes after the Legionnaires for revenge, starting and ending with Bouncing Boy. He then joins the Legion of Super-Villains as a successor Kraven knock-off.

Others: Feel free to vote for someone not listed. I actually forgot to list the villain who ended up winning last round! I'm so sorry guys.

Results:

Glorith: 105 (Totally forgot to include her in both the graphic and the write-up, my bad.)

Grimbor: 102

Golden Boy: 4

Gorgoth: 2

Garlak: 1

Grullog: 1

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too

Candidates:

Warlord Galmark (Class: Bronze Age) was a Khund warlord who replaced Garlak. A known strategist, best known for his attack on Nullport.

Warlord Garlak (Class: Silver Age) was the first known Khund Warlord. He was Nemesis Kid's boss during his infiltration of the Legion and later returned as a puppet of the Dark Circle during Earthwar.

Ambassador Ghadrak (Class: Bronze Age) was the Khundian liaison to the United Planets. He tried to delay the Legion during the Curse or something. I don't know, these Khund types really start to run together.

Golden Boy (Real Name: Klint Stewirt, Class: Retroboot) was a Legion reject from the Silver Age (turned down by Dynamo Boy, funnily enough) with the power to turn objects into gold. He ended up joining the wicked Justice League of Earth during the Retroboot, but was defeated by Fire Lad.

Gorgoth (Class: Bronze Age) was a leader of the Dark Circle who invented the Circle's teleportation technology. He has a personal hatred of humanity.

Grimbor the Chainsman (Real Name: Markx Grimbor, Class: Bronze Age) was a master locksmith who constructed the cell for Validus, eventually being turned to a life of crime under the influence of Charma. His biggest feat was chaining the Earth shortly before the Great Darkness Saga.

Grullug (Class: Bronze Age) is another Dark Circle leader with a face full of tentacles who was almost a member of the Wanderers before helping found the evil society.

Others: Feel free to vote for someone not listed.

Results:

Captain Frake: 95

Flare: 72

Firefist: 4

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too

Candidates:

Fenton Pike (Class: Bronze Age) is an extortionist who served as one of the few villains Tyroc got a crack at, Fenton Pike later returned in an iron man suit to create a disaster to destroy Metropolis. Two stories in which he's a very different character in the second one, there's not much to this character beyond his strange reoccurrence.

Firefist (Class: Five Years Later) was a Khund Legionnaire during the 5 Years Later Era who attacked Ultra Boy and other Legionnaires due to jealousy over his wife. Ultimately it was Devlin O'Ryan whose powers accidentally did him in, before returning to being loyal to the Khunds.

Flare (Real Name: Ray Sah, Class: Bronze Age) was a mutant who grew up on Rimbor, heaving the power to project head and light and fly. Eventually, she was taken an interest in by the Emerald Empress, who recruited her for the second Fatal Five as Validus's replacement (sort of) before being defeeated.

Captain Frake (Real Name: Alisia Frake, Class: Bronze Age) was a space pirate from New Tortuga (the same planet as Dynamo Boy) who finds an amnesiac Ultra Boy following his battle with Pulsar Stargrave and takes him as her consort. Eventually she dies in a battle with the Legion.

Others: Feel free to vote for someone not listed. Note that per rule 7, VOTES FOR THE FATAL FIVE AS A TEAM WILL NOT BE COUNTED. You are of course free to vote for individual members as you so choose. You have been warned.

Results:

Emerald Empress I: 280

Eyeful Ethel: 9

Evillo: 5

Emerald Empress III: 4

Esper Lass: 1

Echo: 1

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Echo (Real Name: Myke-4 Astor, Class: Silver Age) was a member of the Adult Legion of Super-Villains who fought Cosmic Man during one story. In the present time, he's a hero who joins the Legion during the Five-Year Gap. In the Retroboot, he's a villain again, running with the LSV. Known as the Master of Sound, he has a powerful sonic blast ability.

Elysion (Class: Threeboot) was the earth-controlling leader of the villain group Terra Firma who ultimately killed Dream Girl in the Threeboot.

Emerald Empress I (Real Name: Sarya Class: Silver Age) was a woman on the planet Venegar who sought out and claimed the power of the Emerald Eye of Ekron. She then became a founding member of the Fatal Five, eventually taking on the role of leader in the second iteration. Eventually, she escaped from the Emerald Eye but was withered away from her real age, having been magically preserved by the eye for many years.

After the Reboot, she's the mysterious assassin Empress, who initially has no connection to the Emerald Eye until it finds her. This is a little weird, because we're grouping different versions of a character together, even though the different versions of the Emerald Empress prior to the Reboot have more in common with each other than any of them has in common than Reboot's Empress. But for our sakes, the Reboot's Empress is considered to be a version of the Sarya Empress.

Emerald Empress II (Real Name: Ingria Olav, Class: 5 Years Later) was a brief Emerald Empress usurper created by Leland McCauley, quickly killed off by the third in the title.

Emerald Empress III (Real Name: Cera Kesh, Class: 5 Years Later) was a Legion reject who joins McCauley's Fatal Five after killing her predecessor.

Emerald Empress IV (Real Name: Falyce, Class: Retroboot) was an Orandan successor to the original Emerald Empress in the Retroboot.

Esper Lass (Real Name: Meta Ulnoor, Class: Bronze Age) is a member of the Legion of Super-Rejects who challenges Saturn Girl, eventually joining Nemesis Kid's Legion of Super-Villains.

Prince Evillo (Class: Silver Age) is the powerful ruler of Tartarus and the leader of the Devil's Dozen, who later returns in the 5 Years Later Era as a Matter-Eater Lad villain.

Eyeful Ethel (Class: Bronze Age) is a Legion reject with 360-degree vision who attempted to join the Legion of Super-Villains, eventually facing defeat at the hands of the Subsitute Heroes. She was later replicated in robot form by Prince Evillo during the 5 Years Later era, and even joined the Justice League of Earth in the Retroboot. Classic Subs villain.

Others: Feel free to vote for someone not listed. Last time I put Doyle in the graphic but forgot to include him in the description. I feel bad, because as a result the Legion's first villain got 0 votes.

Results:

Dominators: 71

Darkseid: 33

The Dark Circle: 16

Dxaundii: 5

Dark Man: 1

Dev-Em: 1

Dagon the Avenger: 1

Darkness, Servants of: 1 (Your vote counts, u/PrimeTenor!)

Also I'm disappointed at the lack of Doyle votes. I really wish I'd remembered to give him a description.

Shout out to u/HotLlama_8001, who chose to f**k Diamondeth (in Irish Jacobs form, or...), marry Dev-Em, and kill Dynamo Boy.

Shout out to u/JestaKilla, who chose to f**k Dev-Em, marry Darkseid, and kill the Dark MAn.

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Dagon the Avenger (Real Name: Emil Yondor, Class: Bronze Age) was a tech master laid off by R. J. Brande during his bankruptcy in the late 70s and early 80s, after his fortune was stolen by the president. He returned as Dagon the Avenger and kidnapped the Legion's parents. His defeat coincided with Tyroc's final departure from the Legion but was otherwise unrelated. After the Legionnaires defeated him, he was presumably imprisoned in Takron-Galtos before being transferred to the Labyrinth.

The Dark Circle (Class: Silver Age) is a mysterious cabal that may or may not be made up of clones of their five leaders - Ontiir, Grullug, Norak, Gorgoth, and Siepur - that in various versions has been a faceless Soviet Union analog, an evil cult, a cabal of villains backing a separatist movement, and a terrorist organization.

The Dark Man (Real Name: Tharok, Class: Bronze Age) is a shadowy clone of Tharok who manipulates his cyborg progenitor and the Fatal Five, eventually resulting in the deaths of both himself and his cyborg counterpart.

Darkseid (Real Name: Uxas, Class: Bronze Age) is the New God behind the Great Darkness Saga. A legendary Legion foe with his hands in perhaps the most legendary Legion story of all time, he needs to introduction. He also had an arc in the Reboot and had an evil version of the Legion working for him in more recent comics.

Dev-Em (Class: Silver Age), the Knave from Krypton, or perhaps Daxam, was once an escaped Kryptonian prisoner from the Phantom Zone who found his place in the far future as an intelligence agent, later aiding in the Great Darkness Saga. He was briefly retconned as a Titanian before being changed to a Daxamite before facing the Legion again during the 5 Years Later era.

Diamondeth (Real Name: Iris Jacobs, Class: Bronze Age) was a school teacher who fell in love with Karate Kid in the 20th century during his solo series, but with the martial artist's sights set on a princess, she signed up for a STAR Labs experiment to make her special. Instead, it drove her mad and turned her into the super-villain Diamondeth. After several shenanigans including run-ins with Robin and Kamandi, in the one and only crossover between DC's two big future timelines, he managed to cure her all but off-screen and return her to the 20th century.

The Dominators (Class: Bronze Age) have technically been around since the Silver Age, but in those early years they were more of a people to find peace with, with some heavy-handed Vietnam allegory layered on in their first story. Later, they became more outright villainous, and have threatened both Legion and L.E.G.I.O.N. across countless timelines - most notably, in Five Years Later, where they sort of serve as the main villains.

Drax (Real Name: Drax-Zod, Class: Adaptational) is one of those characters from the animated series like Alexis and Zyx who's sort of an alternate version of a classic superman villain. In this case, the Phantom Zone prisoner Drax is heavily implied to be the son of General Zod, and ends up menacing a young Superman in a single episode.

Dxaundii (Class: Silver Age), also known as the Super Mobey-Dick of Space, was originally a Dxaundian Wingfish that was accidentally enlarged by one Doctor Philip Lanphier. Its clash with the Legion cost Lightning Lad his arm, but Lightning Lad chose justice over vengeance and restored the creature to its original size.

Dynamo Boy (Real Name: Vorm, Class: Silver Age) was a pirate from New Tortuga who was the second most famous and arguably most successful Legion infiltrator. He wormed his way into the Legion using artificial powers, then replace the Legionnaires with super-villains from the future. His story brings a sense of dread to the young Legionnaires, now aware of the coming of the super-villain Legion, a destiny that would soon be fulfilled. He also prevented the Legion from saving a planet that got blown up, so there's that.

Others: Feel free to vote for someone not listed.

A Note on Doctor Regulus: As per Rule 5, Doctor Regulus will be voted on under 'R', in keeping with other Doctor characters like Mantis Morlo, who will be under 'M'.

Results:

Computo: 172 (As u/Ianwopc said, we still haven't learned the lesson.)

Charma: 37

Calorie Queen: 14

Cosmic King: 4

Controller: 1

Shout out to u/KookyBuy5712, who chose to f**k Charma, marry Calorie Queen, and kill the entire Controller race.

Also shout out to u/AthleteKey1687, who chose to f**k Chameleon Chief, marry Computo, and kill Cosmic King.

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Calorie Queen (Real Name: Taryn Loy, Class: Bronze Age) was a member of the Legion of Super-Rejects, a Bismollian who auditioned to replaced Matter-Eater Lad with the additional power of gaining super-strength from her matter-eating. While she failed to defeat her Legionnaire counterpart, she did gain some redemption when she joined Tenzil's senatorial staff during the five-year gap.

Caress (Real Name: Chi Tsan Class: Bronze Age) was a member of the second iteration of the Fatal Five who was granted acid-excretion powers by the Khundian Empire as Mano's replacement. Reboot Caress is a prisoner of Planet Hell.

Chameleon Chief (Real Name: Jal Tannuz, Class: Silver Age) was among the first members of the Adult Legion of Super-Villains to appear in the present. A crafty shape-shifter who could alter objects as well as his own appearance. He resurfaced during Five Years Later era and the Retroboot, but his origins remain mysterious.

Chameleon Kid (Real Name: Toog Lintens, Class: Silver Age) was a stronger version of Chameleon Boy who challenged him as a member of the Super-Rejects. Unlike some of the other rejects, he did not turn to villainy following their contest with the Legion.

Charma (Real Name: Charma Drisden, Class: Bronze Age) was a mutant with the power to make men fall in love with her but women hate her. Growing up at as an orphan at a girl's school, the headmistress soon hired Grimbor the Chainsman to bind her. Instead, he fell in love with her, and they began a life of crime together. Her death in a women's prison would go on to be Grimbor's driving motivation for hating the Legion. During the Reboot, Charma is a Legion reject who fought Invisible Kid.

The Chemoids (Class: Bronze Age) were an army of artificial men created by Mantis Morlo, many of which were specifically designed to counter a particular Legionnaire.

Command Kid (Real Name: Jeem Rehtu, Class: Silver Age) was an illusion-casting Legion imposter who was sort of a forerunner to Princess Projectra, possessed by a demon from his home planet. Among the big three Legion imposters - Nemesis Kid, Dynamo Boy, and Command Kid - he's definitely the weakest by far.

Composite Man (Class: Bronze Age) was known as the Composite Legionnaire during the Bronze Age, when it was a strange, insane combination of multiple Legionnaires caused by a blast from an Imskian Dragon. After the Reboot, Composite Man is a Durlan criminal who can copy powers as well as appearances, ultimately taking on the form of multiple Legionnaires. For this exercise I'm going to consider the Composite Man and the Composite Legionnaire two versions of the same character.

Conchita Drisden (Class: 5 Years Later) was Charma's sister during Five Years Later, who ended up working for the Dominators.

Computo (Class: Silver Age) was a crime-prevention robot created by Brainiac 5 who proceeded to become the Legion's Ultron, killing one of Triplicate Girl's bodies and ultimately only being defeated by (checks notes) a black hole gun from the Batcave. He later returned to possess the mind of Danielle Foccart, and reappears in the Reboot and animated TV show.

Controllers (Class: Silver Age) are a race of aliens from another dimension, an offshoot of the Oans seeking to control the spread of evil. Unfortunately the Controller in charge of our galaxy turned to evil, creating the Sun-Eater and only being stopped by Ferro Lad's ghost. Later, another Controller began rebuilding the Sun-Eater. That first Controller appears in the Legion Animated series, and various iterations of the Legion have gone up against the species, including the Star Trek crossover.

Cosmic King (Class: Silver Age) was a classic member of the adult Legion of Super-Villains and the one who made the least sense, having nothing to do with Cosmic Boy other than being the third of the trio. Cosmic King's powers were instead similar to Element Lad's, but he had nothing to do with that Legionnaire either, instead being a scientist from the planet Venus. His only act in the main timeline was the LSV attack on Orando, and he returned during the Retroboot to attack the Legion Academy.

Crav, the General Nah (Class: Rebirth) was Ultra Boy's evil general father during the Rebirth era.'

Others: Feel free to vote for someone not listed. Last time, I was informed that I forgot to include Bounty II (Class: Five Years Later).

Results:

The Blight: 41

Brainiac: 17

Beast Boy: 12

Brain Globes of Rambat: 4

Beauty Blaze: 4

Bounty II: 3

Benn Pares: 3

Black Mace: 1

Candidates:

Beast Boy (Real Name: Ilshu Nor, Class: Silver Age) was a hero of Lallor with the power to turn into any animal who went mad and became a villain. In the end he redeemed himself by dying to save a child, and was remembered as a hero in Shanghalla and the most famous person to ever have his name in DC comics.

Beauty Blaze (Class: Silver Age) was a member of the Legion of Super-Villains in the future during an Adult Legion story, where she used her fire powers against Polar Man. She later returned as a LSV member during the Retroboot.

Benn Pares (Class: Bronze Age) was a master thief who nearly succeeded in stealing the Miracle Machine until the Legionnaires used the machine to capture him. His Who's Who entry states that he's being held in the Labyrinth, meaning he was presumably also imprisoned at Takron-Galtos before its destruction.

Black Mace (Real Name: Mitch Yardreigh, Class: Silver Age) was a member of the Taurus Gang with a big mace who eventually made a solo career for himself, clashing with the Legion as a minor threat from time to time.

Blackout Boy (Real Name: Graah, Class: Silver Age) was one of the three Murran infiltrators who used pills to gain super-powers in order to infiltrate the Legion to learn their secrets. The three spies had their powers voted on by readers, and Blackout Boy had darkness-casting powers that would end up being a prototype for Shadow Lass.

The Blight (Class: Reboot) might just be the most famous villain introduced by the Reboot. Rules by Atrophos (who I forgot to include under 'A', my bad), they spread, conquer, and corrupt. They're kind of the closest thing the Legion's faced to a zombie apocalypse, and they are responsible for utterly shattering the Reboot's "Archie Legion" reputation.

Bounty (Real Name: Jaeger Tallspirit, Class: Bronze Age) is a bounty hunter with tracking powers faced with taking down the Composite Legionnaire, who may or may not have ties to Dawnstar's home planet of Starhaven.

Brain Globes of Rambat (Class: Silver Age) are a group of strange brains in globes who mind control the Legion in one of their earliest Silver Age stories. The Brain Globes may or may not be the same species as the LSV member Zymyr, and are also notable for menacing the Reboot Legion in early issues.

Brainiac (Real Name: Vril Dox Class: Silver Age) is a strange case, a Superman foe who maintains a major association with the Legion through his descendent Brainiac 5 despite barely actually facing them. While in the Silver Age he teamed up with the Legion of Super-Villains, he never fought the super-heroes directly. He did menace the Legion as Pulsar Stargrave, and has been the Legion's big bad in pretty much every animated adaptation.

Other: Feel free to vote for someone not listed here. These are just the characters I came up with. For 'A', people suggested Ambush Bug and An Ryd, both of whom I neglected putting on the candidate list.

Results:

Absorbency Boy: 41

Alexis Luthor: 22

Ambush Bug: 9

An Ryd: 4

Azura: 3

Apollo: 3

Aton Gissark: 2

Also shout-out to u/M-just-M, who chose to f**k Azura, marry Alexis (for the divorce money), and kill Absorbancy Boy so the Retroboot never has to happen.

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Candidates:

Absorbancy Boy (Real Name: Kirt Niedrigh, Class: Bronze Age) was a Legion applicant with the power to absorb other super-powers, but was rejected due to his powers dependency on others. He stole a costume worn by Superboy and Sun Boy, gaining their powers, but was defeated by Tyroc in the issue he joined. He later returned as Earth Man in the Retroboot.

Alexis Luthor (Class: Adaptational) was a wealthy descendant of Superman's arch-foe Lex Luthor. In the TV show, she befriended a young Clark before his meeting with her ancestor, and it's implied he develops a crush on her. Their friendship comes to an end when her dealings with the criminal underworld are exposed, and she loses her hair in a battle with the Legion.

Arma Getten (Class: Bronze Age) was the disgruntled son of a businessman driven out of business by R. J. Brande. Blaming Brande, Getten held Brande hostage to coerce the Legionnaires into building him a super-weapon. He ended up dying in a last-ditch effort to kill the Legionnaires.

Aton Gissark (Class: Bronze Age) was the ringmaster of a circus founded by his grandmother aiming to promote peace between Earth and the planet of Cygnus IV. However, Gissark harbored a secret hated for Cygnus IV, and begin committing murders to sabotage the relationship. He was killed during a jump to hyperspace without a space suit.

Apollo (Real Name: Tal Obrin Class: Silver Age) has the power to control women with his charisma, using large groups of them as hostages and bodyguards. He ended up joining Prince Evillo's Devil's Dozen.

Queen Azura (Real Name: Heraldia Azura Class: Silver Age) was the patriarchal queen of Femnaz who hypnotized the female Legionnaires to fight the male ones, before realizing the value of men.

Other: Feel free to vote for someone not listed here. These are just the characters I came up with.

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. A character may appear on this list only once, but is eligible under multiple aliases, so long as they exist. For example, Absorbancy Boy, listed under 'A', may also be a candidate for Earth Man under 'E', so long as he did not win for 'A'.
4. The character will be listed according to their supervillain name as it is most commonly used, even if that name includes a component of their real name. For example, Roxxas's first name is Kivun, but he's usually just referred to as Roxxas, and so will be listed as 'Roxxas'.
5. Titles like 'Queen', 'King', 'Lord', 'Lady', 'Prince', 'Princess', 'Professor', 'Doctor', etc. will be excluded for naming purposes. For example, Doctor Mantis Morlo will be categorized under 'M' for Mantis, not 'D' for Doctor.
6. For characters who are most often referred to by their full names, they will be categorized by their first name, since it comes first. So the aforementioned Leland McCauley will be listed under 'L' for Leland, not 'M' for McCauley.
7. Villain organizations count individually, alongside and notable members, but villain teams do not. Villain organizations are large-scale organizations composed largely of unnamed, regular members, such as the Dark Circle, the Khunds, and the Dominators. Villain teams are composed solely of individual super-villains who can be voted individually, but not as a collective. Villain teams include the Fatal Five, the Devil's Dozen, the Taurus Gang, and the Legion of Super-Villains.
8. Anyone who has debuted in a Legion story or fought them or one of their non-Superman members in a significant way counts. While I'd caution against the selection of someone like Major Disaster, who did fight Karate Kid in his solo series, that's not a hard and fast rule and may be necessary for harder letters.
9. Feel free to give your F**k, Marry, Kills for these villains, too.

Well, after about a week and a half of polling the community about who the best Legionnaire of each letter is, it’s time to tally up the results. Before we begin, here are our results from the X category.

X Results:
XS: 316
X-Ray Girl: 6

Final Results:

Time to share some results. Before we begin, I should put in some disclaimers. First, I understand that the total number of votes a Legionnaire gets is not a perfect representation of their popularity. Legionnaires in highly contested letters that were open for longer received more votes than Legionnaires in barely contested letters that were open for a short time. And lesser Legionnaires can benefit from an easy letter, while better Legionnaires can suffer from harder letters. Also, later letters tended to get more votes thanks to increased attention to the series.
I also forgot to list the following Legionnaires during their posts: Atmos, Doctor Fate, Entropy Kid, Ingot, and Blackout Boy.
Legionnaires will be broken down into nine categories, based upon which era they first joined the Legion — Silver Age, Bronze Age, 5 Years Later, Reboot, Threeboot, Retroboot, and Rebirth. Characters who were originally Honorary or Reserve members but ascended to active status will be counted with the era they were first made Honorary or Reserve members. For example, Polar Boy was a member of the Substitute Heroes, and thus in the Legion Reserve, during the Silver Age, so he’s counted as being a Silver Age member, despite only ascending to active membership during the Bronze Age.
Two additional categories are Legion Infiltrators, temporary members who attempted to infiltrate the Legion for villainous ends, and Adaptational Members, characters who are only members of the Legion in film and television adaptations.
The Winners
With J, O, Y, and Z not having any Legionnaires, twenty-two Legionnaires won their respective letters: Andromeda, Brainiac 5, Cosmic Boy, Dream Girl, Element Lad, Ferro Lad, Gates, Harmonia, Invisible Kid I, Karate Kid I, Lightning Lad, Matter-Eater Lad, Phantom Girl, Quislet, Reflex, Saturn Girl, Triplicate Girl, Ultra Boy, Veilmist, Wildfire, and XS.
Matter-Eater Lad was the winner with the most votes at 567, while Harmonia was the winner with the fewest votes at 20. The winners averaged around 231 votes, with a median of 243, right between Triplicate Girl and Lightning Lad.
Of the 22 winners, 14 were Silver Age Legionnaires, 3 were Five Years Later Legionnaires, two were Bronze Age Legionnaires, two were Reboot Legionnaires, and one was a Retroboot Legionnaire. None of the winners were of the Threeboot, Rebirth, Adaptational, or Infiltrator classes. Of the 22, 13 were male or male-presenting and 9 were female or female-presenting.
Second Place
With H, Q, and U being uncontested, nineteen Legionnaires got second place in their respective letters: Arm-Fall-Off Boy, Bouncing Boy, Chameleon Boy, Dawnstar, Elastic Lad, Felderweb, Gazelle, Invisible Kid II, Kinetix, Lightning Lass, Mon-El, Nemesis Kid, Polar Boy, Rainbow Girl, Timber Wolf, Visi-Lad, White Witch, and X-Ray Girl.
Mon-El was the second-place winner with the most votes at 509, and Elastic Lad was the second-place winner with the fewest votes at 3. The second-place winners averaged around 100 votes, with a median of Chameleon Boy’s 72.
Of the 19 second place winners, 8 were Silver Age Legionnaires, three were Bronze Age Legionnaires, two were Five Years Later Legionnaires, one was a Reboot Legionnaire, one was a Threeboot Legionnaire, one was a Retroboot Legionnaire, one was a Rebirth Legionnaire, and one was a Legion Infiltrator. Of the 19, 11 were male or male-presenting and 8 were female or female-presenting.
Third Place
With V, W, and X having only two candidates each, sixteen Legionnaires got third place in their respective letters: Antennae Boy, Blok, Chemical King, Dragonmage, Echo, Green Lantern Infectious Lass, Kinetitx, Lamprey, Monstress, Neon, Porcupine Pete, Reflecto, Shadow Lass, and Tellus.
Kinetix was the third-place winner with the most votes at 142, and Echo was the third-place winner with fewest votes at 0, but with more honorable members and less hate than Earth-Man. The third-place winners averaged around 34 votes, with a median of Chemical King’s 16 votes.
Of the 19 third-place winners, five are Bronze Age members, five are Five Years Later members, four are Silver Age members, and two are Reboot members. Of the 19, 10 were male or male-presenting and 9 were female or female-presenting.
The Losers
Twenty-nine Legionnaires got 0 votes: Magnetic Kid II, Double-Header, Atmos, Calamity King, Crystal Kid, Echo, Firefist, Blood Claw, Gear, Dream Boy, Sizzle, Turtle, Chameleon Girl, Earth-Man, Chemical Kid, Doctor Fate, Entropy Kid, Monster Boy, Radius Lad, Soultaker, Superboy III, Gold Lantern, False Pretenses Lad, Command Kid, Dynamo Boy, Blackout Boy, Size Lad, Magnetic Kid I, and Ingot.
Of these, two were Bronze Age members, six were Five Years Later members, one was a Reboot member, three were Threeboot members, four were Retroboot members, seven were Rebirth members, seven were Infiltrators, and one who only joined in an adaptation.

Silver Age Members
The Silver Age category includes thirty-eight Legionnaires: Cosmic Boy, Saturn Girl, Lightning Lad, Triplicate Girl, Phantom Girl, Chameleon Boy, Colossal Boy, Invisible Kid I, Star Boy, Brainiac 5, Supergirl, Superboy I, Sun Boy, Shrinking Violet, Bouncing Boy, Ultra Boy, Mon-El, Matter-Eater Lad, Element Lad, Lightning Lass, Dream Girl, Ferro Lad, Karate Kid I, Sensor Girl, Shadow Lass, Chemical King, Timber Wolf, Pete Ross, Kid Psycho, Insect Queen, Elastic Lad, Green Lantern Fire Lad, Chlorophyll Kid, Night Girl, Stone Boy, and Color Kid. Note that Green Lantern and Sensor Girl did not assume the codenames used here until the Bronze Age.
The Silver Age Legionnaire with the most votes was Matter-Eater Lad, while the Silver Age Legionnaire with the fewest votes was a tie between Green Lantern (who I think most people didn’t realize was Rond Vidar) and Color Kid at 1 vote each. The Silver Age members averaged around 140 votes, with a median of Shadow Lass’s 85.
The Silver Age Legionnaires had 14 first place winners, 8 second place winners, and 4 third-place winners. Fitting that the Silver Age had the most silver medalists. Of the 38, 27 were male or male-presenting, while 11 were female or female-presenting.
Bronze Age Members
The Bronze Age category includes 15 Legionnaires: Wildfire, Tyroc, Dawnstar, Blok, Invisible Kid II, White Witch, Magnetic Kid II, Quislet, Tellus, Infectious Lass, Porcupine Pete, Antennae Boy, Double-Header, Comet Queen, and Karate Kid II.
The Bronze Age Legionnaire with the fewest votes was a tie between Magnetic Kid II and Double-Header, with 0 votes each. The Bronze Age Legionnaire with the most votes was Wildfire with 311. The Bronze Age members averaged around 71 votes, with a median of Tellus’s 26.
The Bronze Age Legionnaires had 2 first place winners, 3 second place winners, and 5 third-place winners. Fitting that the Bronze Age has the most Bronze medalists. Of the 15, 11 were male or male-presenting, while 4 were female or female-presenting.
Five Years Later Members
The Five Years Later (or Iron Age, if you prefer) category includes 22 Legionnaires, who were established as members during that period: Kid Quantum I, Andromeda, Atmos, Calamity King, Crystal Kid, Nightwind, Lamprey, Reflecto, Visi-Lad, Impulse, Echo, Kono, Neon, Reflex, Veilmist, Firefist, Blood Claw, Flederweb, Spider Girl, Catspaw, Dragonmage, and Computo II.
The 5YL Legionnaire with the most votes was Andromeda, with 86. Six 5YL Legionnaires had 0 votes: Atmos, Calamity King, Crystal Kid, Firefist, and Bloodclaw. The 5YL members averaged around 16 votes, with a median of Lamprey and Dragonmage’s 6.
The 5YL Legionnaires had 3 first-place winners, 2 second-place winners, and 5 third-place winners. Of the 22, 14 were male or male-presenting, while 8 were female or female-presenting.
Reboot Members
The Reboot category includes 11 Legionnaires: XS, Kinetix, Gates, Superboy II, Inferno, Magno, Monstress, Kid Quantum II, Thunder, Shikari, and Gear.
The Reboot Legionnaire with the most votes was XS, with 316. Two Reboot members got 0 votes: Magno and Gear. The Reboot Legionnaires averaged around 84 votes, with a median of Inferno’s 17.
The Reboot members had 2 first place winners, 1 second place winner, and 2 third place winners. Of the 11, 4 were male or male-presenting, and 7 were female or female-presenting.
Threeboot Members
The Threeboot category included 4 Legionnaires: Dream Boy, Gazelle, Sizzle, and Turtle.
The Threeboot Legionnaire with the most votes was Gazelle, with 5. No other Threeboot member got any votes, so the Threeboot Legionnaires averaged a little over a single vote, with a median of 0 votes.
The Threeboot members had a single second-place winner. Of the 4, 2 were male or male-presenting, and 2 were female or female-presenting.
Retroboot Members
The Retroboot category included 7 Legionnaires: Chameleon Girl, Rainbow Girl, Earth-Man, Chemical Kid, Glorith II, Dragonwing, and Harmonia.
The Retroboot Legionnaire with the most votes was Rainbow Girl, with 44. Four Retroboot members got 0 votes: Chameleon Girl, Earth-Man, Chemical Kid, and Dragonwing. The Retroboot Legion averaged around 9 votes, with a median of 0 votes.
The Retroboot had one uncontested first place winner and one second place winner. Of the 7, 2 were male or male-presenting, and 5 were female or female-presenting.
Rebirth Members
The Rebirth category includes 8 Legionnaires: Doctor Fate, Entropy Kid, Monster Boy, Radius Lad, Soultaker, X-Ray Girl, Superboy III, and Gold Lantern.
The only Rebirth member with any votes was X-Ray Girl, with 6 votes, who was also their sole second place winner by default. The Rebirth Legionnaires averaged less than a single vote, with a median of 0 votes.
Infiltrators
The Infiltrator category includes 7 Legionnaires: False Pretenses Lad, Command Kid, Dynamo Boy, Nemesis Kid, Blackout Boy, Size Lad, and Magnetic Kid I.
The only infiltrator with any votes was Nemesis Kid, with 29 votes, who was also their only second place winner. The Infiltrators averaged around 4 votes, with a median of 0 votes.
Adaptation
The Adaptation category includes 4 Legionnaires who were only members of the Legion in TV or movie adaptations, each from a different adaptation of the Legion: Ingot (Douglas Nolan), who was a member in the DCAU; Superman X, who was a member in the animated series; Toyman II, who was a member in the Arrowverse’s Supergirl TV show; and Arm-Fall-Off Boy, who was a member in the Tommorrowverse movie.
The Adaptational Legionnaire with the most votes was Arm-Fall-Off Boy, with 20. Ingot was the only Adaptational Legionnaire with 0 votes. The Adaptational Legionnaires averaged around 8 votes, with a median of 4 between Toyman II’s 2 and Superman X’s 8.

TL;DR: The Silver Age Legionnaires are beloved. The Bronze Age, 5YL, and Reboot Legionnaires all have their fans, as do the adaptational Legionnaires. The Threeboot and Retroboot had terrible showings that were still somehow better than the travesty of Rebirth. The consensus seems to be that Earth Man is the worst Legionnaire.

Before I go, I’m thinking of doing a second iteration of this for Legion Villains. Would you guys prefer a character like Doctor Regulus be listed under ‘D’ for Doctor or ‘R’ for Regulus? I’m leaning towards ‘R’ for Regulus because Doctor Mantis Morlo should definitely fall into the ‘M’ category.

Candidates: XS, X-Ray Girl

Last chance to give a Rebirth Legionnaire a single vote, and this one is arguably the best.

Also tonight or tomorrow I'll do a recap vote summarizing the results and announcing second- and third-place winners.

Results:

Wildfire: 311

White Witch: 156

Rules:

1. The character with the most upvotes wins.
2. No downvoting. Any post found to have 0 upvotes will be given two votes.
3. One name per Legionnaire, typically their most widely used name, with preference given for their most common name in the original continuity. A single exception will be made for Triplicate Girl, who it could be argued is equally well-known as Duo Damsel.
4. SW6 clones don't count separately from the original Legionnaires.
5. Super-hero code names always take precedence over real names, even if the real names are more commonly used. So Jimmy Olsen, Laurel Gand, and Rond Vidar are Elastic Lad, Andromeda, and Green Lantern.
6. If there are multiple characters who share a name, specify which one you're voting for. Unlabeled votes will go to the most notable character to use that title, which is usually the original, as specified in that particular post.
7. By popular demand, Mon-El is Mon-El, not Valor. Valor is his name in only one continuity, Mon-El is rarely his real name, and it's simply the name he's known best for.
8. Anyone who has ever been a member of the Legion of Super-Heroes in any main continuity, including the reserves, qualifies. This includes the Original Continuity, Glorithverse, Reboot, Threeboot, Retroboot, Rebirth, the TV series, the Arrowverse, or the Tommorrowverse.
9. Honorary, Reserve, and Expelled members count. Since the Substitute Heroes are a part of the Legion Reserves, anyone who's ever been a member of that group counts. Honorary members from adaptations do not count, because that would get excessive.
10. One commenter submitted their F**k, Marry, Kills for the letter C, so feel free to comment that as well because it's funny