Wario Wario Wario

I had a nightmare where a trained polar bear used on the set of the Golden Compass came to visit my supported living house - I shouted "go away, Norm of the North!" in fear disguised as snark, and then a black woman (I don't know any black women IRL, let alone as support workers, mind you) walked in and said "Don't worry, he only bit off one of my fingers!", which made me scream - I then backtracked and worriedly explained that I'm not ableist - then I woke up

Assist characters don't physically appear, but rather create props similar to crewmates in Nick Kart after flashing a JPG with a non-voiced quote in a speech bubble on screen (so, for example a Chicken Little assist would have the speech bubble "The sky is falling!"). Most assist characters are defensive and there are 3 assists for each possible ability, ranked by stars - each uses up one slot for every star, you have 4 slots. The more stars, the more charge a character needs - charge in 1v1 or team battles is based on damage delt, while charge in free-for-alls is based on damage recieved. You use your assists with the D-pad, similarly to how you access taunts in Smash. While fighters are near-exclusively drawn from the animated canon and Pixar, assists can be anything Disney (except Marvel, Star Wars, or Fox - though Blue Sky characters could maybe show up, and Big Hero 6 is obviously on the table) Some examples of abilities would be...

DAMAGER CLASS - Hits 10 times without causing flinching or knockback, can be mashed away
Baby Sinclair - A frying pan appears on a foe's head that deals 1.20% damage each hit, for a total of 12%
Club Penguin - throws snowballs from beyond the 4th wall that deal 2.50% damage each hit, for a total of 25 damage.
Dr. Facilier - Makes a voodoo curse that deals 3.50% damage each hit, for a total of 35% damage

BUILDER CLASS - Builds a soft platform only their summoner can use
Chicken Little - a sky piece falls and stays out for 5 seconds
Phineas and Ferb - two wooden platforms are built and stay out for 10 seconds
Fix It Felix Jr. - four golden brick platforms are built and stay out for 15 seconds

SNOOZY CLASS - puts a foe to sleep for 6 seconds
Mrs. Jumbo - Sleeping foe cannot be interacted with at all
Evil Queen - Sleeping foe can be hit or grabbed, but will wake up
Andy - Sleeping foe can be damaged without waking up