There is no reason for them to not have Paper Mario, tbh. They could just copy-and-paste Game and Watch's moveset from Brawl if they're lazy.
NOT here for another Mario Kart "Mario" "Baby Mario" "Metal Mario" "Tanooki Mario" "Superiority Complex Mario " ******** again. There are already two Marios, we do not need a third one. That's more than reason enough.
I played Mewtwo for the first time online and I lost the first match. The guy kept calling me a "Mewnoob" and that I sucked. Well after that, I switched to Ness and whooped his ass without even losing a stock. He then quit the room.