Robert Downey Jr., from left, Joss Whedon, Chris Hemsworth and Chris Evans are shown on the set of "The Avengers." (Marvel/MCT)
Robert Downey Jr., from left, Joss Whedon, Chris Hemsworth and Chris Evans are shown on the set of "The Avengers." (Marvel/MCT) MCT
Robert Downey Jr., from left, Joss Whedon, Chris Hemsworth and Chris Evans are shown on the set of "The Avengers." (Marvel/MCT) MCT