Bayonetta, understandable. She has had a game on Wii U.
Cloud, not really a Nintendo character, but Final Fantasy did get its start on the NES.
But who the FUCK asked for Corrin?
Some nigga who can transform into a weird Arceus/Dialga fusion and has an annoying voice? DIDN'T SMASH HAVE ENOUGH FE CHARACTERS?! On top of that, why couldn't we have Caeda, or Chrom, or fucking Lyn?! CORRIN?! No! The three characters would make sense because:
Caeda: Marth's wife
Chrom: The real FE13 protagonist whose daughter is getting assraped by Nintendo
Lyn: The first Lord you got to play as in FE7, the first worldwide FE game.
But no. Dragon Marth. I see how it is, Nintendo...