Scenes from Comic-Con 2011

Costumed fans are seen outside the San Diego Convention Center during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

A fan dressed as Batman walks with a group of people during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Nathan Patta, left, and Jackson Noye pose for pictures dressed as Captain America during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

A fan dressed as "The Joker" from the Batman films and comics, is seen outside the San Diego Convention Center during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Ramon Jaraba poses for a picture dressed as Borg during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Eric Gonzalez poses with Marvel Comics characters during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Crowds of people walk through the exhibit hall during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Costumed fans wait in line for a photo shoot in downtown San Diego, near the Comic-Con 2011 convention, July 21, 2011.

Pictures: Stars at Comic-Con 2011

People walk through the exhibit hall during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Ashlon Larson, dressed as Powergirl, poses for photographers during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Jeff Cho, a Navy officer stationed in San Diego, adjusts his Captain America outfit before a screening of the movie, "Captain America: The First Avenger," during the first day of Comic-Con 2011, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Fans look at a giant truck promoting the movie "Ironman" outside the Comic-Con 2011 convention, July 21, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Two costumed fans wait in front of a Comic-Con banner before Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

A costumed character walks to Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Costumed characters make their way to Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Tracy Ho and Demir Oral pose as they ride the escalator during Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Michael Calabrese and his son, Jacob, relax on the floor during Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Patrick Vargas, of Chula Vista, Calif., during Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Joe Tenorio walks to Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Fans attend the preview night at the Comic-Con 2011 convention on July 21, 2010, in San Diego.

Pictures: Stars at Comic-Con 2011

A costumed Comic-Con 2011 attendee during Preview Night on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Costumed fans walk to Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011

Fans arrive for Preview Night at the Comic-Con 2011 convention on July 20, 2011, in San Diego.

Pictures: Stars at Comic-Con 2011