Robert Downey Jr., Clark Gregg, Scarlett Johansson, Chris Hemsworth, Chris Evans, Samuel L. Jackson, Jeremy Renner, Mark Ruffalo and writer-director Joss Whedon at Marvel Studios’ “Thor” and “Captain America: The First Avenger” panel. The group made a surprise appearance at Comic-Con. Read more: “Marvel stages a superhero panel, and a rock concert breaks out.” (Kevin Winter / Getty Images)
Scarlett Johansson onstage at the Marvel Studios’ “Thor” and “Captain America: The First Avenger” panel. Fans whooped for Johannson, who made an unannounced Comic-Con appearance along with her “Iron Man” costar Robert Downey Jr. on Saturday. (Kevin Winter / Getty Images)
Harrison Ford walks onstage at the “Cowboys & Aliens” panel in handcuffs -- a reference to him being dragged to the event by filmmaker Jon Favreau. Read more: “Harrison Ford gives ‘Cowboys & Aliens’ an otherwordly feel.” (Kevin Winter / Getty Images)
Daniel Craig, star of the science-fiction Western “Cowboys & Aliens,” attends Saturday’s Comic-Con panel. (Kevin Winter / Getty Images)
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Sam Rockwell, at the panel, costars in Favreau’s “Cowboys & Aliens.” (Kevin Winter / Getty Images)
Director Jon Favreau walked onstage at Comic-Con on Saturday as Universal took the wraps off his “Cowboys & Aliens,” which prompted the second-loudest cheers of the day. Read more: “Harrison Ford gives ‘Cowboys & Aliens’ an otherwordly feel.”(Kevin Winter / Getty Images)
James Darling proposed to Se Young Kang, of Santa Barbara, during filmmaker Kevin Smith’s panel discussion Saturday. (Kevin Winter / Getty Images)
Kevin Smith, whose upcoming film is “Red State,” speaks at a panel discussion Saturday. (Kevin Winter / Getty Images)
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“No Ordinary Family” stars Julie Benz and Michael Chiklis stop in at the MySpace and MTV Tower. (Jerod Harris / Getty Images for MySpace)
“Glee” star Kevin McHale is interviewed by MTV. (Jerod Harris / Getty Images for MySpace)
“Glee” star Amber Riley makes a Comic-Con appearance. (Jerod Harris / Getty Images for MySpace)
Actor Matt Davis was among those at a “Vampire Diaries” panel Saturday at the convention. (Jerod Harris / Getty Images for MySpace)
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Daniel Newman, left, and Eli Roth at the MySpace and MTV Tower. (Jerod Harris / Getty Images for MySpace)
“Thor” star Chris Hemsworth. (Jerod Harris / Getty Images for MySpace)
Seth Rogen at the “Paul” panel. Rogen will provide the voice of the alien Paul in the film, directed by Greg Mottola. (Kevin Winter / Getty Images)
Jason Bateman costars in “Paul.” (Kevin Winter / Getty Images)
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“Captain America” star Chris Evans also stars in the new “Scott Pilgrim vs. the World.” (Jerod Harris / Getty Images for MySpace)
First lady of sci-fi films Sigourney Weaver does a Comic-Con pop-in. (Jerod Harris / Getty Images for MySpace)
Christoph Waltz speaks onstage at Sony‘s “Green Hornet” panel. (Kevin Winter / Getty Images)
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Jena Malone at the “Girls That Kick Ass: A New Generation Of Heroines” panel. She stars in the upcoming fantasy action flick “Sucker Punch.” (John Shearer / Getty Images)
Elizabeth Mitchell, left, of “Lost” and “V,” and “Fringe’s” Anna Torv at “Girls That Kick Ass: A New Generation Of Heroines.” (John Shearer / Getty Images)
Screenwriter Alan Ball, of “True Blood” and “Six Feet Under” fame. (Jerod Harris / Getty Images for MySpace)
Fangirls Sarah, Christine, Jennifer and Mishae. (Frazer Harrison / Getty Images)
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Jeff Bridges at the “TRON” party. (Jerod Harris / Getty Images MySpace)
Comedian and actor Paul Scheer arrives at the “TRON” party. (Jerod Harris / Getty Images for MySpace)
Screenwriter Len Wiseman and Emile Gladstone at the “TRON” party. (Jerod Harris / Getty Images for MySpace)
Director Bryan Singer and actor Orlando Jones at the “TRON” party. (Jerod Harris / Getty Images for MySpace)
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“Chuck” star Zachary Levi. (Jerod Harris / Getty Images for MySpace)
“Heroes” actress Ali Larter, who is pregnant, chats with director Paul Anderson. (Jerod Harris / Getty Images for MySpace)
“Community” star Gillian Jacobs at the NBC party during Comic-Con. (Kevin Winter / Getty Images for NBC)
“True Blood’s” Sam Trammell in the MySpace & MTV Tower. (Jerod Harris / Getty Images for MySpace)
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Rob Lowe attends the TV.com NOW Awards at PETCO Park. (Frazer Harrison / Getty Images for TV.com)
TV personality Cheryl Burke attends the TV.com NOW Awards. (Frazer Harrison / Getty Images for TV.com)
Jerry O’Connell, left, and Steven R. McQueen attend the TV.com NOW Awards. (Frazer Harrison / Getty Images for TV.com)
LL Cool J attends the TV.com NOW Awards during Comic-Con 2010 at PETCO Park. (Frazer Harrison / Getty Images for TV.com)
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TV personality Kristin Cavallari attends the TV.com NOW Awards. (Frazer Harrison / Getty Images for TV.com)
“Vampire Diaries” star Paul Wesley attends the TV.com NOW Awards. (Frazer Harrison / Getty Images for TV.com)
Actress Kelly Hu at the TV.com NOW Awards at PETCO Park. (Frazer Harrison / Getty Images for TV.com)
Actors Kaley Cuoco, Simon Helberg, Jim Parsons, Kunal Nayyar and Johnny Galecki attend TV.com NOW Awards during Comic-Con 2010. (Frazer Harrison / Getty Images for TV.com)
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Daniel Dae Kim of “Lost” and Pauley Perrette of “NCIS” attend the TV.com NOW awards. (Frazer Harrison / Getty Images for TV.com)
Adam Sapien, left, and Jeremy Harrigan enjoy Day 2 of Comic-Con 2010, held at the San Diego Convention Center. (David Maung / EPA)
Veronica Mihalopoulos, a designer with the company Bleeding Edge, with a display of gothic-themed dolls she helped design. (David Maung / EPA)
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Ladies in red promote the new horror website the Blood Factory at Comic-Con. (David Maung / EPA)
A high-five for Iron Man. (David Maung / EPA)
Charlie Collier, AMC president and general manager, helps some pals to promote the cable network’s “The Walking Dead” series. (Photo by Jesse Grant / Getty Images for Rock Star Media)
“Glee’s” Josh Sussman attends the Rock Star Media Lounge at Hard Rock Hotel San Diego. (Photo by Jesse Grant / Getty Images for Rock Star Media)
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Seth Rogen talks about “The Green Hornet” at Comic-Con. Footage played in Hall H on Day 2 of the convention. Read more here: “ ‘The Green Hornet’ tries to buzz.” (Kevin Winter / Getty Images)
Paying a visit to their friends in “Tron” gear at the Comic-Con “Tron: Legacy” booth are Disney toys exec Chris Heatherly, left, writer Adam Horowitz, actress Beau Garrett and writer Edward Kitsis. (John Shearer / Getty Images for Disney)
“True Blood’s” Stephen Moyer and Anna Paquin at Comic-Con. (Michael Buckner / Getty Images)
“True Blood’s” Sam Trammell and Rutina Wesley. (Michael Buckner / Getty Images)
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The scene at Comic-Con 2010. (Jevon Phillips / Los Angeles Times)
Sampling the merchandise at Comic-Con 2010. (Jevon Phillips / Los Angeles Times)
Actor Michael Cera in the MySpace & MTV Tower. (Jerod Harris / Getty Images for MySpace)
Actor Jason Schwartzman in the MySpace & MTV Tower. (Jerod Harris / Getty Images for MySpace)
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Director Guillermo del Toro speaks at the MySpace & MTV Tower. (Jerod Harris / Getty Images for MySpace)
Actor Nicolas Cage at Summit Entertainment’s “Drive Angry 3D” panel. (Jerod Harris / Getty Images for MySpace)
“Machete” star Danny Trejo on stage with Michelle Rodriguez at “Machete” party as part of Comic Con 2010. (Brian van der Brug / Los Angeles Times)
Actors Jerry O’Connell, Paul Scheer and Adam Scott attend the ‘Pirahna 3D” footage screening during Comic-Con 2010. (Michael Buckner / Getty Images for Weinstein Co.)
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Rapper Big Boi attends the Marvel Vs. Capcom party during Comic-Con 2010. (John Shearer / Getty Images for Capcom)
A young comic fan poses as Hit Girl from the film “Kick-Ass” at Comic-Con 2010. (Sandy Huffaker / Getty Images)
Actor Will Ferrell speaks at the “Megamind” panel during Comic-Con 2010. (John Shearer / Getty Images for Paramount)
A Harry Potter made of Legos is on display at the San Diego Convention Center. (Brian van der Brug / Los Angeles Times)
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Meagan VanBurkleo attends the convention in character makeup. (Brian van der Brug / Los Angeles Times)
Zoe Tantrum, walking on stilts, passes out event invitations. (Brian van der Brug / Los Angeles Times)
Max de Jonge watches a movie trailer at the San Diego convention. (Brian van der Brug / Los Angeles Times)
Natoshia Reid, right, leads a straitjacketed Jake Greene around the Comic-Con floor. (Brian van der Brug / Los Angeles Times)
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Actor David Duchovny makes an appearance at the MySpace and MTV Tower at Comic-Con. (Jerod Harris / Getty Images for MySpace)
Actresses Helen Mirren, left, and Mary-Louise Parker pose at the “Red” panel. (Kevin Winter / Getty Images)
Actor Aaron Eckhart poses onstage at the “Battle: Los Angeles” panel. (Kevin Winter / Getty Images)
John Welch of Hollywood, dressed as the game character Master Chief, walks around the Comic-Con floor. (Brian van der Brug / Los Angeles Times)
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Actor David Hasselhoff dances with his daughters Taylor Ann Hasselhoff and Hayley Hasselhoff at Comic-Con 2010. (Frazer Harrison / Getty Images)
Musical group the Ferocious Few performs at the convention center. (Michael Buckner / Getty Images)
Actress Michelle Rodriguez appears at the MySpace and MTV Tower. (Jerod Harris / Getty Images)
Competitive eater Tim Janus participates in a Guinness World Records attempt at Tin Fish Restaurant in San Diego. (Frazer Harrison / Getty Images)
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Comic-Con fans attend the preview night at the San Diego Convention Center. (Michael Buckner / Getty Images)
Comic-Con attendee Daniel Ponder at the Mind Flex booth. (John Shearer / Getty Images)
“The Green Hornet in 3D” stand at Comic-Con 2010. (Michael Buckner / Getty Images)
Alyssa Garrison, 16, gets her photograph taken with Iron Man models on display at the preview night of Comic-Con. (David Maung / EPA)
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Comic-Con attendees dress up for the event. (Sandy Huffaker / Getty Images)
Mike Puffley dresses as Citizen V from the Thunderbolts during Comic-Con. (Sandy Huffaker / Getty Images)
Fans look over toy display items in cases. (Sandy Huffaker / Getty Images)
Lee Kim speaks to customers about his custom masks during Comic-Con. (Sandy Huffaker / Getty Images)
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Steven Yan has his picture taken at the Blood Factory booth during Comic-Con. (Sandy Huffaker / Getty Images)
Tracy Ho dresses as Tayuya from the manga series “Naruto.” (Sandy Huffaker / Getty Images)
