Splitterbots were one of the four basic classes of Nefarious troopers, serving as the minions of Dr. Nefarious and Lord Vorselon. They were related to Protoguards, Arc Strikers, and Cyclobombers and was the bread and butter of Nefarious's army. 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 Splitterbots would charge toward Ratchet and attempted to cut him in half with their twin saw blades.
After Ratchet arrived on Vorselon's Warship in order to save Alister Azimuth, the robotic troopers were replaced with stronger Chronoguard variants, taking more hits to destroy them and were blue with silver armor instead of red and orange.