Watch the First Iron Man 3 Trailer: Who's in the Suit Now?

"I can't sleep, and when I do I have nightmares," Tony Stark (Robert Downey Jr.) says, recalling the events he underwent in The Avengers. Unfortunately for him, things are about to get a whole lot worse.

Fall TV Popularity Contest: Vote for your favorite new shows

In the first trailer for Iron Man 3, Stark must not only face the Mandarin (Ben Kinglsey), but also face himself — or at least some twisted version of himself.  The promo features many shots of the Iron Man suit operating without Tony, including one in which the suit pulls Pepper Potts (Gwyneth Paltrow) away from her sleeping beau.Has the Iron Man suit been stolen or is it acting on its own? Let us know who you think is behind the mask in the comments below.