Cast member Scarlett Johansson poses at the world premiere of the film "Marvel's The Avengers" in Hollywood, California April 11, 2012.

Cast member Mark Ruffalo (R) and wife Sunrise Coigney pose at the world premiere of the film "Marvel's The Avengers" in Hollywood, California, April 11, 2012.

Comic book creator and executive producer Stan Lee poses on a motorcycle at the world premiere of the film "Marvel's The Avengers" in Hollywood, California, April 11, 2012.

Cast member Robert Downey Jr. drives a convertible automobile on the red carpet as he and his wife Susan Downey arrive at the world premiere of the film "Marvel's The Avengers" in Hollywood, California, April 11, 2012.

 

Cast member Robert Downey Jr. (L) and his wife Susan Downey pose at the world premiere of the film "Marvel's The Avengers" in Hollywood, California, April 11, 2012.

Band members of Soundgarden, (L - R) Chris Cornell, Matt Cameron, Kim Thayil and Ben Shepherd pose at the world premiere of the film "Marvel's The Avengers" in Hollywood, California, April 11, 2012.