Starscream

Starscream is a Decepticon and later Herald of Unicron from the Super Dion Bros series.

Starscream was the deadliest Decepticon Air Commander and the leader of the Seekers. He is known for his endless ambition for glory and becoming the leader of the Decepticons, as he thinks no one is ever as suitable as himself to lead the Decepticons into victory. In the war for Energon he's been plotting and scheming to overthrow Delgatron X and to retake his command because after Megatron's death he got no chance to even become the leader.

Now he's a worker for Unicron to aid him in defeating his enemies, however Starscream is not be known to be trustworthy and will find a way to get rid of Unicron's control over him.

"Unicron! Allow me to introduce myself, I'm Starscream! The Decepticons' greatest air warrior." 

- Starscream introducing himself to Unicron, War For Energon Season 2 Part 44.