The Colossal-Bot 2000, with re-grown arms and laser eyes
The Colossal-Bot 2000 was a robot Dr. Scum built and used in Dog Man: For Whom the Ball Rolls to try to defeat Petey's Ratterpilar after his Burgle Balls were eaten by it.
After its arms were bitten off by the Ratterpilar, it grows a pair of longer ones and activates its laser eyes, which it uses to zap the Ratterpilar. Although successful, this turns it into a cocoon that hatches into a Ratterfly. The Ratterfly uses its own laser to zap the Colossal-Bot 2000, defeating Dr. Scum in the process.