Rebuilt by the power of Unicron from the scrap of the dying Megatron, Galvatron is every bit as ruthless and terrible as the original Decepticon leader. His core programming is a dark and rotten mass of evil and his every thought is of conquest. As a mobile particle beam cannon, he has enough firepower to lay waste to entire cities; as a robot, no Autobot is his equal in sheer power.
Optimus Prime has faced Megatron in single combat more times than he cares to count. His fearlessness is matched by the Decepticon leader's ruthlessness. Both leaders know that their war will never end until one of them falls. Both of them enter into every fight with one goal in mind - the total destruction of the enemy.