Robo-cavemen

The Robo-Cavemen were a species of robotic troglodytes created by Professor Hubert J. Farnsworth that inhabited the Robot Planetoid during August of 3010. They evolved from unknown Robo-Monkeys and were later extincted. One of them was named Spencer.

Two of these machines kidnapped Amy and Leela hoping that they would become their wives. Amy wanted rocks, so the girls played along with it. Unfortunately, their husbands died the day after the kidnapping. Leela says she's gonna miss Spencer.