The Underminer Occupation: Villain Performer: John Ratzenberger The Underminer is a character in Comic books. Bio The Underminer was chosen by the Aliens, for a carburetor experiment, along with Hamm, P.T. Flea, Yeti, Mack who are all voiced by the same actor, as well as Gray a van and a car. In Mack's dream. Retrieved from "https://worldofcarsdrivein.fandom.com/wiki/The_Underminer?oldid=124269" Categories: Characters Book Characters Community content is available under CC-BY-SA unless otherwise noted.