1x12 - Megas XLR

Coop accidentally destroys a sacred treasure of the Azion Worlds, a robotic, alien empire - the Flame of Azeroth. The Emperor declares whoever captures Megas and bring it to judgement will be named as the new Emperor, so now Coop has to fight off a bunch of Azionites in the deep, dark reaches of the final frontier, all of which are, if necessary, willing to destroy each other to become the Emperor. (Note: due to a tape mixup, this episode was not shown until nearly a year later).