Comic-con continues - in pictures

A couple dressed as zombies kiss during a zombie walk in the Gaslamp Quarter Photograph: Mario Anzuoni/Reuters

Gollum from Lord of the Rings watches visitors pass by Photograph: Earl S. Cryer/Corbis

A superhero panel judges a competitive rib-off at the History Channel cross-country cookout Photograph: Denis Poroy/AP

Actor Johnny Galecki attends "The Big Bang Theory" Press Room Photograph: Frazer Harrison/Getty Images

The MC Bat Commander, Crash McLarson, Ricky Fitness, EagleBones Falconhawk and Jimmy the Robot, of the band The Aquabats, participate in 'The Aquabats! Super Show!' panel Photograph: Todd Williamson/AP

Actor Bryan Cranston speaks at AMC's 'Breaking Bad' panel Photograph: Mark Davis/Getty Images

Libby Putnam, 29, dresses in a theme derived from the pop artist Roy Lichtenstein Photograph: David Maung/EPA

Emil Buenafe and Marisa Meyer put the finishing touches to their costumes of 'Canti' and 'Haruko' from the animated series FLCL Photograph: Mario Anzuoni/Reuters

Joseph Gordon-Levitt and Emily Blunt attend the 'Looper' panel Photograph: Jordan Strauss/AP

Sharlto Copley, Jodie Foster and Matt Damon speak during Sony's 'XXX' panel Photograph: Albert L. Ortega/Getty Images

Sylvester Stallone and Arnold Schwarzenegger attend 'The Expendables' panel Photograph: John Shearer/AP

The Hairy Tentacle Monster surprises fans during 'The Aquabats! Super Show!' panel Photograph: Todd Williamson/AP

The Teenage Mutant Ninja Turtles attend Nickelodeon at Comic-Con Photograph: Joe Kohen/AP

From left, actors Bryan Cranston and Jessica Biel, director Len Wiseman, and actors Colin Farrell and Kate Beckinsale, from the upcoming film Total Recall, pose for a portrait Photograph: Matt Sayles/AP

Zombies walk through the Gaslamp Quarter Photograph: Krista Kennell/Corbis

The Zombot character joins the Fear Net and Resident Evil party at Voyeur nightclub Photograph: Jeff Bottari/AP