Asa Butterfield, a cast member in the forthcoming film "Ender's Game," poses 

Asa Butterfield, a cast member in the forthcoming film "Ender's Game," poses underneath a picture of his character in the film at a preview event for the film at the 2013 Comic-Con International Convention on Wednesday, July 17, 2013 in San Diego, Calif. (Photo by Chris Pizzello/Invision/AP)
Associated Press
Asa Butterfield, a cast member in the forthcoming film "Ender's Game," poses underneath a picture of his character in the film at a preview event for the film at the 2013 Comic-Con International Convention on Wednesday, July 17, 2013 in San Diego, Calif. (Photo by Chris Pizzello/Invision/AP)
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