Jimmy 'Jax' Pinchak (Peter Wiggin)
Peter, the eldest of the Wiggin children, is a sadistic bully who enjoys torturing animals and making his little brother Ender miserable. Peter (played by Let Me In's Pinchack) was refused acceptance into Battle School because commanders felt that he was too violent, but that doesn't stop his quest for power. He writes political essays under the pseudonym ''Locke'' that shape international policy as the world is moving toward war and establish him as the most important thinker on Earth despite the fact that he's just a child.