Sonic Heroes and Sonic Adventure 1 and 2 were for Gamecube.
Hmm, they DID have Sonic Heroes on Ps2 also. I think they could sign some rights and be able to put sonic characters into another Smash Bros. game. I mean Sega is practically dead as far as systems go, so why not put them in a gamecube game with nintendo characters as well.. I think they would get more money doing it than not...