Transformers - Tempus Exitium
? BCE (Before the Great War)
Megatron Origin 2 – The Autobots were a police force, where Kaon’s department was led by Sentinel Prime. It was brought to their attention that vid-discs were mass-sold with gladiatorial arena combats which simply broke dozens of laws. Sentinel Prime set out spy teams to find the arena and subsequently arrest all the combatants. Two of these spies, Fastback and Bumper were unlucky enough to find an arena being built by the Constructicons, and were discovered by Megatron, who killed the both of them.
Megatron Origin 3 – During the burial of Fastback and Bumper, Sentinel Prime gave a rousing speech to the assembled Autobots. He said it wasn’t easy to loose their own, but that they had to act on it, and apprehend the murderers as soon as possible.