Trevor Olson, from Minnesota, dressed as the character “Joker”, poses for a photograph at New York's Comic Con convention, October 9, 2014, in New York City. The event draws thousands of costumed fans, panels of pop culture luminaries and features a sprawling floor of vendors in a space equivalent to more than three football fields in Javits Center. (Photo by Shannon Stapleton/Reuters)

Star Wars enthusiasts wear costumes resembling what they say are three “Chew's Angels” during the 2015 Comic-Con International Convention in San Diego, California July 10, 2015. (Photo by Mario Anzuoni/Reuters)

Flowers are placed on actress Elizabeth Taylor's Star on the Hollywood Walk of Fame on March 23, 2011 in Hollywood, California. The Academy Award winning actress died Wednesday at age 79. (Photo by Charley Gallay/Getty Images)

General Atmosphere at 2014 New York Comic Con – Day 3 at Jacob Javitz Center on October 11, 2014 in New York City. (Photo by Laura Cavanaugh/Getty Images)

Hundreds of onlookers descended upon White Rock beach, just south of Vancouver, Canada, on June 12, 2012 to mourn a beached whale that died on the sandy tidal flats. (Photo by Nick Procaylo/PNG/PNG Merlin Archive)

A Comic Con attendee poses during the 2014 New York Comic Con at Jacob Javitz Center on October 9, 2014 in New York City. (Photo by Daniel Zuchnik/Getty Images)

A group of costumed fans attend Comic-Con International at San Diego Convention Center on July 12, 2015 in San Diego, California. (Photo by Daniel Knighton/Getty Images)