'Elysium' Villain on Pranking Matt Damon 

South African actor Sharlto Copley goes from the hero of Neill Blomkamp's breakout cult hit 'District 9' to the villain in Neill Blomkamp's sci-fi epic 'Elysium'! He tells us about how pranking his co-star Matt Damon helped keep him in character, plus he reflects on his first experiences at Comic-Con and the strange request he received from fans who loved his character in 'District 9'! Hosted by Nikki Novak (@nikkinovak).