X-Men

[DarthEnderX]

Neither is Iron Man or Deadpool

Deadpool may not have been born a mutant, but his powers come from Wolverine. And he's at least been on more than one X-Men team.

Deadpool helping people and shaking their hand? What is the world becoming? xD

He does that quite often actually. Usually once every couple years or so he joins up with the good guys during some big event only to go back to his mercenary ways after the excitement dies down.