Team Meat is willing to make a deal with Nintendo where they would loan Meat Boy as a special third party character for the upcoming Smash game and in return they would develop a few games for the Wii U and 3DS.
Although they might have hinted they were being sarcastic and wouldn't hold up their end since none would be exclusive nor any guarantees they'd even show up on Nintendo systems.
http://www.screwattack.com/news/team...r-smash-bros-4