My ultimate fighter would use Guacamelee-styled vectors for easy scaling. Each character would have their normal fighter attacks and the equivalent of SSBB's final smash that only happens upon a player's death as a sort of revenge called "Game Over". I don't know enough about some characters to give them a Game Over and for a lot I don't know what a good Game Over would be but w/e. Characters with Game Overs or other info are marked with an asterisk.
I liked Kriven's console exclusives idea. Gonna steal it. I'm literally Zynga btw.
Sega
Series: Sonic the Hedgehog
Game Over: Super Sonic
Series: Sonic the Hedgehog
Game Over: idk
Series: Super Monkey Ball
Game Over: Player gets to tilt the stage back and forth for a set amount of time.
Series: Billy Hatcher
Game Over: idk
Namco
Series: Pacman
Game Over: The four ghosts and four power pellets appear on the stage. The ghosts are invincible, but by using all four pellets the ghosts disappear.
Series: Dig Dug
Game Over: idk
Series: Point Blank
Game Over: Player gets a crosshair on-screen and 3 bullets to shoot at other players.
Series: Katamari Damacy
Game Over: All the items the Prince has used before death are tallied up and used to create a giant ball that falls on the stage and maybe rolls around a bit.
Hudson Soft
Series: Bomberman
Game Over: Bomberman-style revenge. A little moving platform appears in the front of the screen, and Bomberman must use an almost NES Golf-like system to throw bombs with a certain amount of force. Bomberman cannot aim up or down, so in order to hit higher or lower he must use differents amount of force.
Series: Bomberman
Game Over: Mighty is way more qualified.
Series: Bonk
Game Over: idk
Series:Adventure Island
Game Over: idk
Activision Blizzard
Series: Warcraft
Game Over: idk
Series: Lost Vikings
Game Over: idk
Gameplay Quirk: All 3 Vikings are on the stage, but only one can be active at a time. The player can switch between them, leaving the other two greyed out and immune to damage. They all share the same health though, and are all knocked out together.
Series: Spyro
Game Over: idk
Series: Crash Bandicoot
Game Over: idk
Disney
Series: Wreck-It Ralph
Game Over: idk
Series: Tron
Game Over: idk
Note: He's pretty much a video game character. Shut up.
Series: Epic Mickey
Game Over: Oswald uses his remote to reverse other players' controls for a set amount of time.
Note: I know he's not originally a video game character, but it was a video game that revived him after so many decades.
Series: Kingdom Hearts
Game Over: idk
Note: I'm cheating with this one.
Square Enix
Series: Final Fantasy
Game Over: idk
Series: Chrono Trigger
Game Over: idk
Series: LostWinds
Game Over: idk
Series: Deus Ex
Game Over: idk
Capcom
Series: Mega Man
Game Over: idk
Series: Viewtiful Joe
Game Over: idk
Series: Ōkami
Game Over: idk
Series: Street Fighter
Game Over: idk
WayForward
Series: Shantae
Game Over: idk
Series: Shantae
Game Over: idk
Series: Wonder Momo
Game Over: idk
Series: Mighty Switch Force
Game Over:
Konami
Series: Frogger
Game Over: idk
Series: Ganbare Goemon
Game Over: idk
Series: Castlevania
Game Over: idk
Note: I just picked a random CV character because I never played a CV game ehehehehe.
Series: Metal Gear
Game Over: idk
CONSOLE EXCLUSIVES
Nintendo Consoles
Series: Super Mario
Game Over: Player can shoot starbits at players to daze them. The starbits shoot at a much slower rate than in Super Mario Galaxy.
Series: The Legend of Zelda
Game Over: Player can activate the Ballad of the Wind Fish and make the level disappear as though a dream... except that everything is still solid and players might fall off!
Series: Donkey Kong
Game Over: idk
Series: Metroid
Game Over: idk
Sony Consoles
Series: EverQuest
Game Over: Lucan is immortal and cannot die, but if he loses all his lives he cannot win! Lucan can keep fighting, but he is weaker and the last living player wins
Series: Patapon
Game Over: idk
Series: Ratchet & Clank
Game Over: idk
Series: PaRappa the Rapper
Game Over: idk
Microsoft Consoles
Series: Banjo-Kazooie
Game Over: idk
Series: Halo
Game Over: idk
Series: The Gunstringer
Game Over: idk
Series: Viva Piñata
Game Over: idk
Computer/Steam
Series: Guacamelee
Game Over:
Series: Octodad
Game Over:
Series: Minecraft
Game Over:
Series: Cryamore
Game Over:
Smartphones
Series: Angry Birds
Game Over: Pretty much Bomberman's Game Over but instead of an NES Golf system it would be a vertical Angry Birds.
Series: Cut the Rope
Game Over: Candies will appear hanging from the top of the screen, with little push-blowers on each side. Aim for a player and cut the rope!
Series: Where's my Water?]
Game Over:
Series: Run Roo Run
Game Over:
Web-based HTML5 tSR Client what
Series: Sengirbugs
Game Over:
Series: Bullethead
Game Over:
Series: Mahou Shoujo Tellis-Chan
Game Over:
Series: ???
Game Over: ZCE does not die. ZCE is God mode.