Marvel Entertainment has unveiled a third trailer for The Avengers: Age of Ultron movie. Comic books fans spread the #AvengersAssemble hashtag across the Twittersphere to unlock it.
The video embedded above offers a deeper look at the robotic supervillain that will challenge Iron Man, Captain America, Black Widow, Hawkeye, Thor, and The Hulk. Follow these links to watch another trailer and a clip from this film adaptation. (via IGN.com)