Primax 1005.19 Gamma (IDW G1)
In 4 MYA, Fastback was a member of the Autobot Security Services under the command of Prowl in Kaon. He was present at a briefing where Prowl explained that Megatron had taken charge of the secret illegal gladiator pits. Sentinel Prime arrived and took direct command of the operation. Under Sentinel Prime's direction, Fastback and Bumper were deployed to find the gladiators' pit. Spending an entire night on stakeout, the two discovered that the Constructicons built the arena on-site for every event. They found Megatron meeting Soundwave when Bumper and Fastback were apprehended by Soundwave's cassettes Ravage, Laserbeak, and Buzzsaw. Fastback was then killed by Megatron in front of Bumper. His memorial service was held in Kaon.
- The Transformers: Megatron Origin #2
- The Transformers: Megatron Origin #3