If either of them were to get in, it'd have to be a Kingdom Hearts stage for obvious reasons, so either Radiant Garden/Hollow Bastion or Olympus Coliseum. Oh wait, Olympus Coliseum is out because it's a Disney location. Damn, the options sure are limited!
Really though, forget either of them. Neku Sakuraba for the win. He's just as Emo, but he's more Nintendo related and just plain from an interesting game that's actually recent. ish.