I predict that this will be the final roster:
- Mario
- Luigi
- Peach
- Bowser
- Rosalina & Luma
- Bowser Jr.
- Donkey Kong
- Diddy Kong
- Yoshi
- Wario
- Link
- Zelda
- Sheik
- Ganondorf
- Toon Link
- Samus
- Zero Suit Samus
- Pit
- Palutena
- Wii Fit Trainer
- Kirby
- King Dedede
- Meta Knight
- Captain Falcon
- Villager
- Fox
- Falco
- Wolf
- Krystal
- Pikmin & Olimar
- Pikachu
- Charizard
- Lucario
- Greninja
- Jigglypuff
- Mewtwo
- Ness
- Little Mac
- Shulk
- Mr. Game & Watch
- Marth
- Ike
- Chrom
- Ice Climbers
- R.O.B.
- Snake
- Mega Man
- Sonic
- Pac-Man
- Mii Fighters
Anyone in bold is not confirmed yet.