Optimus Prime is the leader of the Autobots. Once, long ago, he was co-ruler of Cybertron together with his brother, Lord High Protector Megatron, but Megatron grew greedy and attempted to claim the All Spark for himself. Optimus rose to stand against him. As obsessively as Megatron strives to achieve his objective, Optimus is equally as dedicated to stopping him, even at the cost of his life, his world, andif necessaryhis own people. It was on his order that the All Spark was jettisoned into space, dooming Cybertron to a slow death and his people to nomadism. The sacrifices he has made weigh heavily on his spark, but they must be done, for there is no other choice. He knows the ambitions that lurk in Megatron's spark, and they must never see the light of day. Lives must be kept free from the threat of Megatron's tyranny, no matter the cost.