Here's the problem with Thor: His rogue's gallery is more of a collection than a gallery. He's not overflowing with titanic baddies. With Thor 2 heating up—and Marvel's cinematic honcho promising a "major, major" villain—we started thinking of who it might be.
While we know that Earth's Mightiest Heroes will take on Thanos in Avengers 2—if you haven't seen this movie by now, then you kinda deserve to have it spoiled—it's less clear who the God of Thunder will take on in his sequel. Marvel Studios president Kevin Feige says that Thanos won't be in Thor 2, but "there will be a major new villain. A major, major new antagonist ..."
And Casino Royale baddie Mads Mikkelson is, apparently, in talks to join the Thor 2 cast as a villain.
So, who could Thor Odinson be up against? Here are some candidates.