Megatron

Megatron's Decepticon revolution, like many such movements, end up becoming a whole new tyranny. Powerful, charismatic, violent, and full of rage for any who would stand in the way of his ambition and drive, Megatron brought Cybertron past the brink of destruction. Now he and his former brother-in-arms Optimus Prime fight on other worlds. He'll never forgive Optimus for "betraying" him, stealing from the Council the rank of Prime which he believed was rightfully his. He's reserved for his old friend the greatest honor possible: glorious defeat at his hands. He's fierce and cruel, willing to manipulate others to his advantage and hurt those who oppose him or get in his way. He's seen as a megalomaniac tyrant who's obsessed with defeating Optimus.