the head of Limburger Industries, the biggest industrial company in Chicago. Wearing a purple business suit and a rubber mask in order to look human at most times, he attempts to mine it and other parts of Earth of various resources including random earth, dirt, rock, snow, metal and oil, which he plans to send back to his own dying planet. He is highly resourceful and cunning, but always failing due to the Biker Mice's interventions. His headquarters is a very tall tower called Limburger Plaza. Unfortunately for him, his plans are foiled and his tower is either destroyed, torn down, launched into space or even disappears completely by the Biker Mice or some other misfortune at the climax of almost every episode. During the War of Liberation on Mars, Limburger was a low-ranked and bullied officer, taunted by both his superior Stilton and Karbunkle. Limburger managed to attain his present rank by using Stilton’s absence during the Biker Mice’s attack on the Plutarkian base to attain his present rank. Limburger reappears in the 2006 sequel series, initially as a bootlicker for the Pit Boss but later as a co-conspirator alongside the Catatonians. Dr. Benjamin Boris Zachary Karbunkle (voiced by Susan Silo) – A thin, sly mad scientist of an indeterminate human-shaped species. Karbunkle used to work for Limburger's superior Dominic T. Stilton until Limburger bribed him to cross over. Karbunkle's main task is to think of 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. During the War of Liberation on Mars, he gave Modo his bionic arm and eye, Stoker his bionic tail, and Throttle his malfunctioning bionic eyes as part of his experiments to create a bionic army after they were captured by Plutarkian forces. He intended to use one of his inventions, the Mind Bender Beam, to brainwash them into being loyal to the Plutarkians; he was only able to brainwash Stoker before the Biker Mice escapes, and Stoker was later freed from Plutarkian control, while the Beam was destroyed. Karbunkle is a sycophant, often seen admiring Limburger and praising him; however, Karbunkle's top priority is Karbunkle. He is often seen torturing Fred the Mutant, cares little about his co-worker Greasepit and has traded Plutarkian employers many times. Karbunkle is very sadistic and is known to enjoy torturing people, wears