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 R2-D2|R2 units. These machines destroyed the Planet Express ship and attacked the Planet Express crew causing them to hide in a cave.

Trivia

 * Their name is a pun of the.