in line. Pit Crew – The henchmen of Pit Boss who will come up and rob various places, often taken hostages as well. Road Ravens - A gang that was once used by Limburger to steal gasoline from different trucks. Jimmy Mac (voiced by Jerry Houser) - The leader of the Road Ravens. Stalkers (voiced by Robert Ito and Brad Garrett respectively) - A group of alien bounty hunters. Mace (voiced by Jeff Bennett) – Mace is a Nomad Rat who appears to be disguised as a mouse and into intervening with the mice and the Plutarkian war in secret and sometimes coming into conflict with Vinnie, but he escaped by grabbing Harley and teleporting to the Nomad Rat base. Supervillains In most episodes, Limburger orders Karbunkle to use the transporter to bring into Chicago one of the very powerful supervillains in the universe. Generally each of them have one special ability which is useful for Limburger's plan in hand. Most of them seem to use an asteroid station called Black Rock as their main hideout when they are not summoned by those willing to pay for their services. On one notable occasion in the episode "A Scent, a Memory, a Far Distant Cheese", Limburger and Karbunkle accidentally got sucked into the transporter and appear at the Black Rock where all the villains up to that episode confront him for not paying them as they asked for. The episode "Diet of Worms" shows that the other Plutarkians can use the same supervillains. The following supervillains are listed in order of appearance: X-Terminator – A robotic bounty hunter that rides a customized combat motorcycle. He was the first supervillain that Limburger summoned to destroy the Biker Mice. In the episode "Diet of Worms", X-Terminator was paired up with Jack Monteray. Lectromag (voiced by Mark Hamill) – An electromagnetic supervillain who the Biker Mice often have a hard time defeating. Tunnel Rat (voiced by Rob Paulsen) – A rat-like villain who is an expert at driving any digging vehicle. The Loogie Brothers (voiced by Neil Ross and Jess Harnell) – Hacka and Honka Loogie are known as the "Scum of the Universe." They were summoned by Limburger to stink up Chicago, summoned to collaborate with Evil Eye Weevil in a motocross plot, and later summoned to take advantage of Chicago's garbage crisis. Evil Eye Weevil (voiced by Jess Harnell impersonating Elvis Presley)