Karl Castle

Karl Castle is a radio personality on National People's Radio who shared Terri Grass' hatred of Car Chat and helped her run a broadcasting truck to harass it and try to get it off the air. He ran off when she was caught as the Phantom of the Air.

Appearances

 * Car-Tastrophe

Notes/trivia

 * His name is a parody of a real NPR radio personality, Carl Kassel, who appears on the show Wait Wait... Don't Tell Me!.