Joss Whedon still hasn't confirmed who the villain is in The Avengers 2, although the director teased in April that Thanos, who popped up at the end of Marvel's The Avengers, may be saved for The Avengers 3. Here's what the filmmaker had to say about his villain in the Marvel Phase Two sequel.

"I'm very excited about the villain, and have a lot to say about him. But if you watch my shows, the one thing I've never been very good at is guest stars, because I've always been interested in the ensemble. With The Avengers, I'm still most fascinated by them. The other thing is, you don't try to top it. I know I will never make a moment as pleasing in a film as Hulk and Loki. You can't chase that dragon. If you try to do exactly the same thing, the chances you're going to do it better are very slim, and the only reason for me to devote three years to making another Avengers movie is the hope of making a better one."

The filmmaker has already confirmed that superhero siblings Quicksilver and Scarlet Witch will be a part of The Avengers 2. We reported in April that production will begin in early 2014 in the U.K.

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