The Fallen (MLAATT)

The Fallen is one of the two main antagonists of the My Life as a Teenage Transformer franchise, appearing as the overarching antagonist of XJ Robots and Cybertronians, the main antagonist of Cluster Prime: Resurrection and The Revenge of the Fallen, and one of the two main antagonists of The Darkest Hour: Cybertron War. He is a former member of the Thirteen Original Primes who betrayed them and his creator, Primus, to serve Unicron and became the leader of his heralds.