I'm going the boring way and main Donald. Sounds odd, if you think about it. Maining Donald.
This is Davidreamcatcha's idea for Donald, didn't hear it from me.
Donald Duck was mentioned upthread, and it makes sense that he's constantly jumping up and down shadowboxing. To expand on that, he's probably an up-close brawler too, but his moves are more... not
acrobatic so much as
hyperactive. He moves further and has greater range than Klondike Scrooge, but he has difficulty changing his momentum, so overshooting and leaving yourself open are big risks with Mr Duck.
Scrooge is going to be my main. Dat cane tech.
Davidreamcatcha's idea for Scrooge. Also didn't hear it from me.
Scrooge McDuck isn't so spry as he was once, but he's quick (like pugilist Donald) and has an arsenal of throws with his cane. He never throws a punch; all his attacks activate off-screen devices, making the most of his immense wealth. Jets of high-pressure pennies, falling pallets of gold bars, sirens and prison bars springing up to prevent enemies from advancing... that sort of thing. Just for fun, whenever he ducks under a high attack (assuming such things are tracked in this system), it's animated as picking up a dime off the ground.
Disney Smash? I'd play it, and would want some of the animals to be playable, such as Simba and Kevin. They'd have a varied roster, no doubt about that.
https://disneyfighter.wordpress.com/characters/
The hypothetical roster. Check out the rest of the site while you're at it.