Transformers - Tempus Exitium
Nothing is safe. From raw ore to living robots, it all goes into Mixmaster’s grisly drum where it’s reduced, refined, and recombined into virtually any raw material the Decepticons need. Watching Mixmaster prepare a new batch of materials is like seeing some mad alchemist at work, giggling and cackling over his creations with evil glee. It would be a stretch to call him a scientist; a better comparison would be to a witch throwing arcane scraps into her cauldron to complete a bubbling potion. His fellow Decepticons suspect Mixmaster of having a few wires loose in his logic center, but they can’t argue with the results.
? BCE (Before the Great War)
Megatron Origin 2 – Mixmaster and the other Constructicons built arena sites on Cybertron for the illegal gladitorial matches. Mixmaster was used to melt down metal for raw materials. This included other cybertronians. At one point, Megatron, together with Rumble and Frenzy arrived too early. There they met Soundwave who offered weapons and technology. Megatron discovered two spies, and killed them both, learning that the gladiators were hunted by the Autobots. Megatron ordered Scrapper to quit building and leave the site.
Megatron Origin 3 – As the other Constructicons, Mixmaster makes repairs to Megatron’s gladiator team after a fight. He was there when Soundwave came in and introduced the Seekers to Megatron.