South Park/Super Mario 64 DS

In this idea, here are the only characters I suggested and why:

Cartman as Mario (Both wear red)

Kyle as Luigi (Both have a green hat, and Luigi's voice would suit Kyle's)

Stan as Wario (Both are my favorite characters to play as (just Wario anyway))

Kenny as Yoshi (Both have the same number of letters in their name)

Mrs. Cartman as Peach (That's all I've got)