George Denis Patrick Carlin was an American stand-up comedian, actor, voice actor, social critic, and author (who was noted for the Seven dirty words comedy routine). He was best known for his roles as Rufus in the Bill & Ted film franchise, and for narrating the first four seasons of the long running children's television series Thomas & Friends from 1991 to 1995, and for portraying Mr. Conductor on Shining Time Station from Season 2 to Season 3.
For Disney, he voiced Zugor in the 2005 Disney direct-to-DVD film Tarzan II and Fillmore in the 2006 Disney/Pixar film Cars and several games. Lloyd Sherr replaced him as the voice of Fillmore in Cars 2 after his death in 2008. He also played Frank Madras in Outrageous Fortune and Bart Trinke in the Miramax Films film Jersey Girl.