12 Actors Who Secretly Played Two Characters In The Same Film

6. Benedict Cumberbatch - The Hobbit: The Desolation Of Smaug

Peter Jackson was obviously very impressed with Benedict Cumberbatch when he cast him to voice the fearsome dragon Smaug in the second Hobbit movie. The actor got so into the role that he visited animals in captivity to study their movements and actually motion-captured his entire performance to lend more substance to the Lonely Mountain's guardian.

He's great as Smaug, with his deep, rich voice adding warmth and terror at the same time. But he was also secretly cast to give voice to second villain The Necromancer, which Deadline revealed ahead of the film's release. It was supposed to be a secret, but it's not often these things manage to stay under wraps.