Cyclobombers were one of the four basic classes of Nefarious troopers, serving as the minions of Dr. Nefarious and Lord Vorselon. They were related to Splitterbots, Arc Strikers, and Protoguards. Like its cousins, they had an oval shaped, green, mechanical "brain" that was connected to the top of its red body, which was almost completely covered by one giant robotic eye. The Cyclobombers usually stayed at a distance away from Ratchet and attacked him by shooting lasers upward, towards the sky, which would land on the spot that he was on. They would also melee him if he came too close.