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SAN DIEGO, CA - JULY 10: (EDITORS NOTE: This image was processed using digital filters.) Performers imitate zombies to promote AMC's "The Walking Dead" at Comic-Con 2015 on July 10, 2015 in San Diego, California. (Photo by John Shearer/Getty Images for AMC)

SAN DIEGO, CA - JULY 10: (EDITORS NOTE: This image was processed using digital filters.) Performers imitate zombies to promote AMC's "The Walking Dead" at Comic-Con 2015 on July 10, 2015 in San Diego, California.  (Photo by John Shearer/Getty Images for AMC)