[quote=@Sep]
Not Superman and Hyperion? :lol

I'd probably go with Doc Green annnnnnd.... :hmmm

I actually don't know for a villain. 

[/quote]

Hyperion is pretty cool, but he hasn't quite lived up to his potential. He's mostly used as a background character in major Marvel books. Squadron Supreme seems to have some promise, though, considering what happened to Namor.

I find that a lot of Marvel's more powerful characters have pretty underwhelming villains. Apart from Magneto, Doctor Doom and Ultron, of course.