The VG Resource

Joining as an assist character is Crapy from Crapy's Crates!

He would run in and step on a button. Once the button is pressed, a crate falls from the sky and lands on top of the opponent. Crapy then pushes the crate off. If he's attacked, he pops and the crate continues to magically move away. (Maybe I'll give it wheels or something.)
Gifs:

Is this the same guy as our Blue Luigi because he's already a character.

He's clearly not the same.


He's betterer.

It's not official, but I like to think of Crapy as Crappy Blue Luigi's (or Blue Crapsman's) weird crepe-loving, crate-pushing uncle