<Tr> <Th> Known for </Th> <Td> Voice of Optimus Prime and Eeyore </Td> </Tr> <Tr> <Th> Children </Th> <Td> </Td> </Tr> <P> Peter Claver Cullen (born July 28, 1941) is a Canadian voice actor . He is best known as the voice of Optimus Prime (as well as Ironhide) in the original 1980s Transformers animated series, and most other incarnations of the character . He has also voiced several other characters, including Eeyore in the Winnie the Pooh, Monterey Jack in Chip' n Dale Rescue Rangers, and KARR in Knight Rider . In 2007, Cullen returned to the role of Optimus Prime in various Transformers media, starting with the first live - action film . </P> <P> Cullen was born on July 28, 1941 in Montreal, Quebec, to Henry L. and Muriel (née McCann) Cullen . He has three siblings: Michaela, Sonny, and Larry . Cullen attended Regiopolis - Notre Dame Catholic Secondary School . He is a member of the first graduating class of the National Theatre School of Canada, which graduated in 1963 . His brother, Larry Cullen, was a retired Captain in the United States Marine Corps, and helped inspire the voice of Optimus Prime . </P>

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