Arcs 6-10: Rise of the Decepticons

Optimus Prime’s brother, Megatronus, has stirred the Decepticons into a new war against the Autobots. Now commanding the Decepticons as Lord Megatron, he won’t stop until the universe is under his heel.

Arc 6: Harbinger of Doom and Betrayal
Arc 7: Chaotic Power Struggle
Arc 8: Growing Problems
Arc 9: Amy’s Alien Adventures
Arc 10: Double Trouble