Trilobots

The Trilobots were a species of robotic trilobites created by Professor Hubert J. Farnsworth that inhabited the Robot Planetoid during August of 3010. They are descended from the Nanobots and later evolved into Robo-Dinosaurs and. These machines cannibalized the Planet Express ship for metals and attacked the Planet Express crew forcing them to hide in a cave for protection.

Trivia

 * Their name is a pun of the.