1. little birdie from metroid other m with a ridley transformation final smash.
2. Wart or Mouser (or both!) from Super mario bros 2 (NA version)
3. Captain toad.
4. Inkling, with octoling costume
5. Cranky Kong (dat cane!)
6. I'd like Impa to take over for sheik
7. Waluigi
8. Alexandra (ia?) Roivas from Eternal Darkness with spell casting special moves
9. Augustus from Eternal Darkness
10. guest characters- Shovel Knight, Banjo/Kazooie OR Yu/kalalee, Simon Belmont, Conker, and Wonder Red.
Alot of that won't/can't happen, but it's a nice wish list.

oooooh, i completely forgot midna and crystal. I love that someone suggested travis touchdown and jack camen as guest characters! loved those games!

man, i'm thinking of more now. But there's just to many to keep to a list of 10. And almost all nintendo characters. Man

Inkling, Paper Mario and............. I can't think anyone else! :/

King K Rool
Banjo Kazooie
Chunky Kong
Dixie Kong
Blaziken
Gengar
Bomberman
Knuckles
Shovel Knight
Shantae

zero protoman bass vegeta goku wreck-it ralph fierce deity the whole cast of hyrule warriors batman the joker dixie tiny chunky cranky kiddy lanky funky blood falcon black shadow dr stuart samurai gorro rayman bomberman snake shadow tails amy big dr robotnik dr wily k rool waluigi daisy crash bandicoot spyro sigma metal sonic wonder red wonder blue shovel knight inklings

and knuckles

1-Blaziken (Pokémon)
2-Ashley (Wario Ware)
3-Inkling (Splatoon)
4-Crono (Chrono Trigger)
5-Isaac (Golden Sun)
6-Ridley (Metroid)
7-Geno (Super Mario RPG)
8-Paper Mario (Paper Mario)
9-Impa (The Legend of Zelda)
10-Hawlucha (Pokémon)