The confirmed characters so far are:
Introduced in SSB: Donkey Kong; Fox; Kirby; Link; Luigi; Mario; Pikachu; Samus.
Introduced in SSBM: Bowser; Marth; Peach; Zelda.
Introduced in SSBB: Pikmin & Olimar; Pit; Sonic; Toon Link.
Newcomers: Mega Man; Rosalina & Luma; Villager; Wii Fit Trainer.
Characters I think will return:
Introduced in SSB: Captain Falcon; Jigglypuff; Ness; Yoshi.
Introduced in SSBM: Dr. Mario(costume); Falco; Ganondorf; Ice Climbers; Mewtwo; Mr. Game & Watch; Sheik.
Introduced in SSBB: Diddy Kong; King Dedede; Lucas; Meta Knight; Pokémon Trainer; Wario; Wolf; Zero Suit Samus.
Not returning from SSBB: Ike; Lucario; R.O.B.; Snake.
Newcomers: Chrom(FE); Cranky Kong; Crystal; Dillon; Goodra(Pokemon); Little Mac; Pac-Man; Shulk(Xenoblade).
