Sonic Party 1 ~ 10 + Super Sonic Party Character Rosters
Inspired by user Embarrassed_Mud_4119's post.
Sonic Party 1 (1998) & 2 (1999)
The starting cast features the core four of Sonic, Tails, Knuckles, and Amy. In addition to these, Vector the Crocodile is included to serve as the "green" color character to help balance roster. Sally Acorn from the comics and SatAM is also added to be the "brown" color character. Sonic Party 1 would release a month before Sonic Adventure, making it questionable to include Big the Cat, E-102 Gamma, Chaos, Tikal, or a Chao. Also since the early games of Mario Party didn't use enemies, Metal Sonic, Dr. Eggman, and others were not considered.
Sonic Party 3 (2000) & 4 (2002)
Since Mario Party 3 release a year before Sonic Adventure 2 so neither Rouge nor Shadow were considered. Keeping the same cast, I decided to add Charmy and Big as new characters. Charmy being the "yellow" character and having a visually smaller model while Big is the "purple" character and having a bigger model gives a nice contrast between the new additions.
Sonic Party 5 (2003)
Due to not adding more material from the comics, Sally Acorn was removed from the roster. The new additions for this game are Espio, Cream, and Rouge. Thanks to Sonic Heroes releasing in a month, this game uses those models. These three were chosen over Shadow, since he was dead at the time, and E-123 Omega, who wasn't canon yet.
Sonic Party 6 (2004)
The new inclusion this game is Shadow the Hedgehog as an unlockable character. This is thanks to his return in Sonic Heroes and his upcoming game releasing the following year.
Sonic Party 7 (2005)
Big the Cat is removed from the cast due to his model being bigger than other characters. E-123 Omega is added as an unlockable character to complete Team Dark. Chaos is also included as an unlockable character thanks to Chaos making cameos in other games.
Sonic Party 8 (2007)
Similar to Big, Cream and Charmy were removed due to their model size, but this time due to them being smaller than most of the cast. They are replaced by the Babylon Rogues who made their debut a year prior. Blaze the Cat and Silver the Hedgehog also made their debut as unlockable characters. This is to show that these two character are not naturally part of Sonic's world.
Sonic Party 9 (2012)
Vector and Espio were removed in this entry. I was debating between them and Babylon Rogues due to both having a "green" and "purple" characters. The Babylon Rogues got to stay since Sonic Free Riders was still relatively recent and Charmy was removed in Sonic Party 8. Marnie the Raccoon was added thanks to the vehicle mechanic, while Bark the Polar Bear was added as a "yellow" character and because Sega would be planning to re-release Sonic the Fighters later that year. Orbot and Cubot serve as the unlockable characters, as well as the first time characters loyal to Eggman are playable.
Sonic Boom Party 10 (2015)
This game released during the Boom era, which is good since this game has a smaller cast than Sonic Party 9. The top role features the main cast of Sonic, Tails, Knuckles, Amy, Sticks the Badger, and an unlockable Dr. Eggman in his first playable appearance. The bottom row features secondary characters of Shadow, Cubot, Orbot, Perci the Badicoot, Cliff, and Metal Sonic as an unlockable character. Perci was chosen as secondary pink choice while Cliff was added due to cool hat. Eggman and Metal Sonic were made playable as Lyric takes the Bowser role this game.
Super Sonic Party (2018)
Sticks, Perci, and Cliff are left behind as representatives of the boom era. With the boom era over, Super Sonic Party sees the cast grow from 12 to 20 characters. The top role feature heroic characters while the bottom role has villains. Rogue, Silver, and Blaze return from their Boom era absence. Meanwhile we see Chaos return to fill a villain slot. Infinite is added as the most recent villain, while Zavok and Zeena are included to represent Sonic Lost World from half a decade earlier, Zavok involvement in Sonic Forces, and Zeena being the "green" character. The four unlockable characters in this game are Ray the Flying Squirrel, Mighty the Armadillo, and Heavy Magician to represent Sonic Mania Plus. Heavy Magician got in over the other Hard Boil Heavies thanks to one key detail, they have a cool hat. Lyric is also an unlockable character to represent the previous boom era.