? BCE (Before the Great War)
Megatron Origin 2 – Bumper was listening to Prowl’s briefing on the illegal gladiator matches, until Sentinel Prime came in and started telling people what the plan will be to catch these criminals. Bumper was teamed up with Fastback as a scout team that would search possible arena locations. For several cycles, they waited while nothing happened, until the Constructicons came in. They discovered the arena was built on site, and saw the Constructicons kill cybertronians for raw materials. Eventually, Megatron came in with Rumble and Frenzy who were approached by Soundwave. During the conversation between Megatron and Soundwave, Fastback and Bumper were discovered. While Fastback was being attacked by Buzzsaw and Laserbeak, Bumper requested backup, but his signals were scrambled by Soundwave, and Ravage jumped on him from behind, knocking him out. When he came to, Megatron killed Fastback before his eyes, and asked him to talk. Bumper refused, but got his brainmodule scanned by Laserbeak and Soundwave. Posing no danger, he became obsolete to Megatron, who subsequently ripped him in half.