Buzzkill

Buzzkill was a small robot that had one mechanical arm which ended in a circular saw. It was the first robot that Homer Simpson (as Chief Knock-A-Homer) faced in Robot Rumble.

History
Buzzkill delivered the first blow, hitting Chief Knock-A-Homer's arm with the saw and giving Homer a nasty cut. Homer grabbed Buzzkill's arm and forced the saw back toward Buzzkill, winning the fight by cutting him in half. As a victory celebration, Homer then yanked the arm out of Buzzkill's remains and swung it in the air.