Peace through tyranny!
Megatron is a combination of brute strength, military cunning, ruthlessness and terror. He aches to return to Cybertron to complete his conquest after destroying all the Autobots on Earth and capturing all of Earth's resources. He's incredibly powerful and intelligent and fires a nuclear-charged fusion cannon. He can also link up interdimensionally to a black hole and draw anti-matter from it for use as a weapon. Megatron has no known weaknesses.