High Quality Content by WIKIPEDIA articles! Starscream is a fictional character in the Transformers franchise. He is one of the most prolific characters in the Transformers fictional work, appearing in almost all incarnations of the story. Starscream is usually portrayed with the same characterization. Formerly being a scientist, Starscream is a treacherous, high ranking Decepticon who turns into a jet and is known to often challenge his leader Megatron for leadership of the Decepticons.