HERE'S A HINT! After the Battle at Autobot City on Earth, Megatron and the wounded Decepticons retreat. Megatron finally defeated Optimus Prime. He no need to repair the wounded Decepticons and has them jettisoned from Astrotrain. Starscream and his fellow warriors are then summoned by Unicron. Starscream agrees to the terms without hesitation. He is given a new body. Unircon senses his indestructible gives him a new name, Chronus. Chronus, Cyclonus, and Scourge now search to destroy Megatron for leaving them to oblivion.