Peter Cullen

Peter Cullen (born July 18, 1941) is a Canadian voice actor who is best known for voicing Optimus Prime (as well as Ironhide) in various incarnations of the Transformers franchise.

He has done a few roles for Disney, most notably voicing Eeyore from Winnie the Pooh. He also voiced Monterey Jack in Chip 'n Dale Rescue Rangers for all the episodes in Season 1, until Jim Cummings took over the role for Seasons 2 and 3.