Unicron

Unicron, also known as The Chaos Bringer, is The Tyrannical Leader of The Decepticons and Serves as The Titular Main Antagonist of GoAnimate: The Rise of Unicron. he is the source of Everything Evil on Cybertron that seems to infect most of the Planet's inhabitants and is the Main deity of the Decepticons, Worshipped by Starscream and his Decepticon followers.

He is an extremely powerful Cybertronian God who commands a massive army known as the Decepticons. He forged a partnership with Boris the Father of Caillou to destroy GoAnimate City and invade Earth, - both in exchange for the Destruction of the powerful Matrix of Leadership, only for him to end up failing with he's task and Being Defeated by the Black knight and his wife along with the Autobots