User blog comment:MetalMickey272/Game Idea!: SONIC ARENA/@comment-3990769-20110718012902/@comment-17720060-20110718013333

Nah. Scratch and Grounder are AoStH characters (except Grounder, if you're talkin' bout the Sonic 2 one), so they won't appear in the game, and if this was real, Mario most likely wouldn't be in it, since SEGA probably won't make a game with Mario that's not in the Mario and Sonic series. But he would probably be a character for the 3DS, but I'm not adding him.