John Finnegan

John P. "J.P." Finnegan (August 18, 1926 New York City, New York, USA – July 29, 2012 Palm Desert, California, USA) was an American film and television actor, mostly known for his recurrent role on the American crime fiction series Columbo. He voiced the villainous character Warren T. Rat in the 1986 Don Bluth film An American Tail.