Though it got off to something of a slow start here in America, great word of mouth propelled Thor to a second week at number one here Stateside, and even if it hadn’t Marvel’s latest superhero venture has already made $225 million overseas. Some (ok me) are even calling this the superhero studio’s best movie yet. So of course, that means sequel.

Thor is already slated to show up in the upcoming team-up movie The Avengers along with the likes of Iron Man and Captain America. But once that’s over with it’s believed that Marvel Studios will already have a Thor 2 in the works. In fact our sources tell us that they’ve already begun kicking around story ideas for the sequel with the hope that they’ll have it ready and in theaters in the same year as Iron Man 3, in 2013. That fits the pattern we’re seeing this summer, with both Thor and Captain America hitting theaters in the same year.

Our source tells us that while the Thor 2 project is still in very early stages and they don’t expect to start actually writing the script until the end of the year, internally producers are kicking around possible villains. In contention to face off against Thor are two characters named The Enchantress and The Executioner.

In Marvel Comics lore The Enchantress is a powerful Asgard sorceress named Amora. In the comics her first appearance involved an attempt to take out Thor’s love interest in order to have him all to herself. That notion seems to fit pretty well with where the first movie left us. When last we saw him Thor was pining for, and obviously head over heels in love with, Natalie Portman’s Jane. Eventually he’ll have to bring her to court, and that’s going to piss a lot of Asgardians off. Loki could figure in here, if Tom Hiddleston’s character returns, since in the comics he helps Amora seduce Thor.

The Executioner is a character closely tied to The Enchantress. He’s in love with her, and she manipulates him into doing her dirty work. He’s a warrior and easily manipulated. Toying with him could be fun for Loki too.

For now it’s all in the early stages and these are just a couple of the ideas we hear Marvel may be kicking around internally. We contacted Marvel for official confirmation of this story, but as you’d expect they aren’t able to comment on anything this early in production. Our information comes from a completely proven, trusted source who has broken numerous Marvel related stories before. Expect more detail as Thor 2 moves forward.