Let Me In - Let him play, Sakurai. Let him play.

The rumor that Sakurai wouldn't let Waluigi in because he was base on someone he didn't like was unfounded.

However, it is true that he won't let Doomguy in smash because Doomguy killed the demon who he contracted eternal youth with.

If Ryu can fight comic book heroes, actual anime characters, and even other Capcom characters from completely different genres Doomguy should be allowed in Smash.