? BCE (Before the Great War)
Megatron Origin 2 – Before the Great War, the Constructicons were a group that would build arena’s on specific sites where the illegal gladiator games were held. They would use whatever material was available, including other cybertronians, to construct their location. During one of their building programs, Megatron, together with Frenzy and Rumble arrived early, when the arena wasn’t finished yet. They were given this information in advance through Soundwave who spoke with Megatron. The latter discovered they were being spied on by two Autobots; Fastback and Bumper. Buzzsaw, Laserbeak and Ravage made short work of the spies, and soon the group learned they were being targetted by the Autobot Security forces. Megatron told Scrapper to leave this site, as it was compromised.
Megatron Origin 3 – After a battle in the Arena, the Constructicons were busy reassambling, and deassembling, the gladiators under Megatron’s command. They seemed also to be replacing lost limbs with body parts of other cybertronians. Hook was working on Megatron when Soundwave came in and introduced the three flight-capable combatants; Starscream. Thundercracker and Skywarp. Megatron then ordered Hook to modify the three Seekers with the technology and weapons he gained through Soundwave.