The lean, mean, purple karting machine himself, who happens to be long overdue for his own game, or even some kind of appearance in the mainline Super Mario games (his outfit in Odyssey doesn't count). There wasn't much unique to be done with this one; it's largely a combination of elements from Luigi and Wario. I really wish there was a way to set his ridiculously tall and lanky build apart from the rest, instead of just using the same "slim" model as Luigi, but it's fine I suppose.

Also see Mario, Luigi, and Wario.