Dr. Benjamin Boris Zachary Karbunkle or Karbunkle for short, is Lawrence Limburger's right-hand man. A former mad scientist who used to work for Limburger's superior, Dominic T. Stilton, until Limburger bribed him to cross over. As the head science of Limburger's plans, he develops the machines and robots to either battle the Biker Mice, gather resources from Earth, or look up the villain of the week with his Dimensional Transporter.
As such, he was responsible for Modo's bionic arm, Throttle's malfunctioning bionic eyes and Stoker's bionic tail, who was also brainwashed by the doctor's Mind Bender Beam.
He reappears in the 2006 series, eventually meeting the same fate as Limburger.
Karbunkle abandoned Limburger and sided with the Catatonians. He aided them with the Regenerators which resulted in him butting heads with Dr. Catorkian. Because of this, Catorkian turned Karbunkle into a turtle. He was last seen in the aquarium of Rump's office along with Lawrence Limburger and Napoleon Brie.
Myth of Mars[]
Karbunkle had the same fate as Greasepit and Limburger being MIA, possibly deceased.