King Asura, monarch of those who peaked early.
Asura in Megaten is a really odd character.
I already mentioned how weird it is that Michael's role after SMT I was demoted from an endgame threat to merely one of the Archangels, and I still believe it.
But his Chaos counterpart, Asura, is even worse, because he simply doesn't exist in that role anymore. Yes, Both Michael and Asura were the Final Boss once, which sounds odd to everyone nowadays.
In SMT II, we discover he is Virocana, but his role is quite minor, as Lucifer takes over as the main Chaos figure.
It takes until SMT: Strange Journey for Asura to be important again, where he becomes the antagonist of the Delphinus Sector and the creator of the Delphinus Parasite, which drives people to violent madness. Later, he returns to take his true form, Ashera, revealing herself as one of the Mothers, the group behind the original game.
Asura encompasses Virocana, Dainichi Nyorai, Ashera, Ahura Mazda, and the King of the Asuras.
Asura himself is weird; he isn't a single species, but rather a category of being. That is why his actual Japanese name is Asura-O, the King of Asuras.
He is also the mainstay Ultimate Persona of the Sun Arcana in Persona 3, 4, and 5, and an unlocked fusion via the Anguished One's FATE system rank 3.
He is memorable, with an iconic, cool design and a defined ideology and personality.
But why is he here? Because he peaked early, and every game makes him even weirder due to how complex he is in theory.
Any of those roles: Virocana, Ahura Mazda, or Ashera, would be great for an SMT game's antagonist or final boss, yet he never gets the chance.
Frankly, the more I think about it, it's weird that Ashera isn't just Mem Aleph. If the intention was to create a female counterpart to YHVH on the Chaos side, using Ashera rather than inventing Mem Aleph—who is literally just two letters; yes, "MA" is iconic, but she doesn't exist mythologically—would have made more sense, especially since Ashera already showed the exact same hatred for human sapience during the Delphinus arc.
This is only the missed potential of ONE of Asura's faces.
The fact that he is Vairocana and Ahura Mazda also strikes as odd, because either of them is already perfect material for a Final Boss material representing the Buddhist cycle of rebirth (perfect as the final antagonist of a world about rejecting Enlightenment and embracing the world as it is, or rejecting the world because the just world fallacy embodified for him) or Ahura Mazda, as a equal demiurgic figure who created the world and the very same guy who is infamously the origin of the Good and Evil of Nietzsche's beyond.
...this hasn't happen, and its just really odd for a guy who was the Final Boss for the Law route in SMT I
And of course, the weird thing of SJ where Ashera exists and despite being literally Elat (aka, Literally female El, the title given to YHVH in real life Near East myth), the role of "Genderbend YHVH" is given to Mem Aleph (who doesn't exist) and Shekinah (which is widely considered to be a title for Ashera). It's incredibly weak, especially after SMT SJ already established a way to make Asura directly related to the YHVH /Abrahamic mythos by making him Ashera.
Essentially, Asura Oh is a weird character. He was explicitly stated to be Ahura Mazda forced into a demonic form rising up in SMT I. Perfect final boss material.
Then in SMT II, he is revealed to also be Vairocana, ruling the afterlife as the god of reincarnation. Not his plot, but its a huge role that means that actually, every mortal human SMT character will meet him, which is a huge thing...
In SMT SJ, Ashera's twist gives Asura a direct connection to the world of the Near East mythos. Its impressive, now its not more a East vs West rivality, he himself bridges the rivality without needing Lucifer and the demons to have a personal link with the world of demons, angels, dragons and lords.
He is still the reward for every Sun Arcana SL at the very least. Which is also genuinely odd to think, because his demonized form is actually being the ultimate embodiment of a very positive arcana, which implies Asura actually absorbs the positive aspects of all his selves (many games imply Asura is his "war mask", so its more complex than Asura being a lesser form).
This guy is actually deeply fascinating, being endgame material from multiple angles