Here I have a list of possible characters (final smash included)
Mario - Mario Finale (the classic one you know what I mean
)Luigi - Negative Zone (like the one in the Wii version)
Peach - Dark Princess: Peach turns darker, faster, more powerfull and more resistant.
Toad - Toad Army (like the that angel boy (can't remember the name
) plus toad gets extra armor.Yoshi - Dino Dragon (like the one in the Wii version)
Bowser - Lethal Lava Power: Everything burns, bowser become bigger and all of his attacks will be firey.
Bowsy (a.k.a. Bowser Jr.) - Doomship (like the Diddy Kong's one in the Wii version)
Kamek - Triforce Magic Beam (with "Triforce" I mean that "Square-Triangle-Circle" that have kamer in EVERY game). Like the Lucario's one in the Wii version but you can choose to move Kamek to another position and while Kamek's moving the TMB can't be fired.
Falco - Falco's Starfighter (I don't know how It's called sorry I mean the spaceship). Like the Bowsy's one but the ship is in the background... I mean... like some attacks of some final bosses... you are in the background and shoot lazers.
Fox - Landmaster (like the one in the Wii version). Obvious what's that no?
Any more Starfox character because I only know that two from the SSBB Wii...
GT - Foreman Power: GT gets giant, almost invincible and very powerfull. Like the normal GT and the Evil Factory ending.
Tutorial Bot - Lethal Gas: Obvious nope? Oh B.T.W. T-Bot will have infinte jumps with that.
1st general (don't remember the names but you get It...) - Cannon Trees: They're ewerywhere and they shoot at your enemies!
2nd general - Aqua Blast: Don't deals a lot of damage but pushes a lot.
3rd general (sorry if in wrong order really don't remember well the game) - Falling rocks (like Ness's one in the Wii version)
4th general - Meteorite Rain: Like the anterior one but there's less meteors but they're big and exploding! Thinkin' about SM63 Final Tower Climb - Final Battle huh?
5th general (so sorry if I missed something) - Absolute Freeze: Enemy: "All the corners are freezed and you can't fall off the stage... yay?" No. That hurts a lot, you move a lot slower and the general have infinite jumps and more power!
Foreman - Solar Flare: The sun's falling just to the battle stage! Save evereryone!!! And the Foreman? Oh yeah in the last emergency ship... oh darn It...
Last Hero (the blue guy in LL) - Legacy Beam: Like Winged Tabuu's one in the Wii version.
Last Knight (the dark guy in LL) - Moresorle Altar: Everithing dissapears and you get teleported to the Altar of Moresorle... where the power source is but... oh no! The Dark Knight have get It and is preparing a powerfull beam!
Last Trainer (something like the Pokemon Trainer but with the LL rock, mushroom and crab) - Triple Doom: Oh you gonna hate this. Tthere's poison mushrooms all over the place that launch poison smoke, there's falling rocks that aim to you and plus the crabs wanna eat you! DOOOM!
Cool huh?
