- Replica Cosmos is a evil clone in the Generation One continuity family.
Replica Cosmos is a perfect duplicate of the Autobot Cosmos created in Hook's laboratory, including all of Cosmos's memories! But unlike the trusty Autobot, Replica Cosmos carries a secret payload: a powerful proton bomb!
Find Your Fate Junior
However, the real Cosmos escaped and caught up to Replica Cosmos just before he could strike. Replica Cosmos was destroyed by Optimus Prime, despite his attempts to convince the Autobot leader he was the real thing and to shoot the other one.
Since Desert Flight was a multipath adventure, there of course existed one outcome in which Optimus Prime destroyed the wrong Cosmos. Replica Cosmos didn't live much longer, however; he was vaporized when he triggered his bomb, taking Optimus Prime, Smokescreen, Beachcomber, Powerglide, Wheeljack and Windcharger with him.