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Celebrities and fans in costume at 2015 Comic-Con in San Diego

Friday, July 10, 2015

Maisie Williams, from left, John Bradley, and Sophie Turner attend the "Game of Thrones" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Conleth Hill, left, and Maisie Williams attend the "Game of Thrones" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Carice van Houten, from left, Liam Cunningham and Gwendoline Christie attend the "Game of Thrones" panel on day 2 of San Diego Comic-Con International on Friday, July 10, 2015.

Maisie Williams attends the "Game of Thrones" autograph signing on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Alfie Allen, left, and Sophie Turner attend the "Game of Thrones" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Gwendoline Christie attends Lucasfilm's "Star Wars: The Force Awakens" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

J.J. Abrams, from left, Lawrence Kasdan, John Boyega, Daisy Ridley, and Oscar Isaac attend Lucasfilm's "Star Wars: The Force Awakens" panel on day 2 of Comic-Con International.

Harrison Ford attends Lucasfilm's "Star Wars: The Force Awakens" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Carrie Fisher and Harrison Ford kiss at the Lucasfilm's "Star Wars: The Force Awakens" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Carrie Fisher, Mark Hamill, and Harrison Ford attend Lucasfilm's "Star Wars: The Force Awakens" panel on day 2 of San Diego Comic-Con International on Friday, July 10, 2015.

Melissa McBride walks onstage with a plate of cookies at "The Walking Dead" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Kim Dickens attends the "Fear the Walking Dead" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Actor Bruce Campbell of 'Ash vs Evil Dead' poses for a portrait at Comic-Con International 2015.

Actor Micah Lee attends Edward Scissorhands 25th Anniversary with FOX Home Entertainment during Comic-Con International 2015.

Fans experience Guitar Hero Live during Comic-Con International 2015 on July 10, 2015 in San Diego, California.

Dustin Agosta of Akron, Ohio, attends day 1 of Comic-Con International on Thursday, July 9, 2015, in San Diego, Calif.

Musashi Schroeder poses before playing Tom Clancy's Rainbow Six Siege at the Ubisoft event during Comic-Con on Thursday, July 9, 2015, in San Diego, Calif.

Cosplayers pose during Comic-Con International 2015 on July 10, 2015 in San Diego, California.

Cosplayer poses during Comic-Con International 2015 on July 10, 2015 in San Diego, California.

Bill Murray attends "Rock the Kasbah" panel on day 1 of Comic-Con International on Thursday, July 9, 2015, in San Diego, Calif.

A fan dressed as Star War's Darth Vader poses for a photo on the first day of the 2015 Comic-Con International

Women promoting Sharknado 3 dance on Fifth Avenue on Preview Night at Comic-Con International.

Randall Cheatwood, dressed as the character Gandalf from "The Hobbit" and "The Lord of the Rings," series.

People dressed as Stormtroopers from the "Star Wars" films, stand in front of the convention center on the first day of the 2015 Comic-Con.

Guests dressed in costume attend day 1 of Comic-Con International on Thursday, July 9, 2015, in San Diego, Calif.

Jeriko Salazar, of Monterey Calif, waits in line dressed as the Grinch on day 1 of Comic-Con International on Thursday, July 9, 2015, in San Diego, Calif.

Fans dressed as Batwoman, left, and Wonder Woman pose in front of the convention center on the first day of the 2015 Comic-Con.

Josh Hutcherson, Jennifer Lawrence and Liam Hemsworth seen at Lionsgate “The Hunger Games: Mockingjay Part 2" Presentation

Liam Hemsworth, Josh Hutcherson and Jennifer Lawrence seen at Lionsgate “The Hunger Games: Mockingjay Part 2" Presentation

Actor Elijah Wood of 'The Last Witch Hunter' attends the Lionsgate press room during Comic-Con International 2015.

A cosplayer portrays Wonder Woman during Comic-Con International 2015 on July 8, 2015 in San Diego, California.

Cosplayers portray DC Comics superheroes during Comic-Con International 2015 on July 8, 2015 in San Diego, California.

Cosplayers attend Comic-Con International 2015 on July 8, 2015 in San Diego, California.

Cosplayers portray Ghostbusters during Comic-Con International 2015 on July 8, 2015 in San Diego, California.

A cosplayer portrays 'Sadness' from 'Inside Out' during Comic-Con International 2015 on July 8, 2015 in San Diego, California.

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Celebrities and fans in costume at 2015 Comic-Con in San DiegoSophie Turner, left, and Natalie Dormer attend the "Game of Thrones" panel on day 2 of Comic-Con International on Friday, July 10, 2015, in San Diego, Calif.

Photo by Chris Pizzello/Invision/AP

More than 130,000 fans are expected at the San Diego Convention Center over the next four days for autograph signings, TV and film presentations, toy shopping, costume contests and other artistic engagements inspired by comic books and superheroes as part of 2015 Comic-Con International in San Diego.

Thursday, "The Hunger Games" stars Jennifer Lawrence, Liam Hemsworth and Josh Hutcherson, along with the film's director and producer, unveiled the trailer for "Mockingjay-Part 2" on Thursday at the annual pop-culture celebration.

Bill Murray made his first appearance at Comic-Con to promote his upcoming film "Rock the Kashbah." Murray high-fived the screaming audience members on his way to the stage, where he discussed his role as a washed-up music manager who discovers a young talent while stranded in Afghanistan.

"I'm rock 'n' roll," Murray said. "That's what I am."

The Associated Press contributed to this report.