The first archivist to become Autobot leader. As Megatron besieged the Autobot capital of Iacon, the Council of Elders prepared to surrender to the Decepticons. Councillor Xaaron suggested that High Councillor Traachon step down and allow a military officer to assume Autobot leadership. Traachon then used his powers of veto and effectively elected himself out of office, allowing Optimus Prime to assume supreme command of the Autobots.