​Peter Claver Cullen (born July 28, 1941) is a Canadian voice actor. He voiced Optimus Prime in the original 1980s Transformers animated series, later returning to the role in Transformers media in 2007, starting with the first live-action film. He has also voiced many other characters across a wide variety of popular media, including Eeyore in the Winnie the Pooh franchise, Monterey Jack in Chip 'n Dale: Rescue Rangers, the first voice of KARR in Knight Rider, and the vocalizations of the title character in Predator (1987).