In this film image released by Disney, Iron Man, portrayed by Robert Downey Jr., left, and Captain America, portrayed by Chris Evans, are shown in a scene from "The Avengers" (AP Photo/Disney) In this film image released by Disney, Scarlett Johansson portraying Black Widow, left, and Jeremy Renner, portraying Hawkeye, are shown during the filming of Marvel's "The Avengers." (AP Photo/Disney, Zade Rosenthal)