Peter Cullen

Peter Claver Cullen (born July 28, 1941) is a  Canadian  voice actor. Peter Cullen served as an announcer for Toonami durring most of it's run, being referred to as the "Big Guy". The most prominent characters he has voiced also are  Eeyore in the  Winnie-the-Pooh franchise and  Optimus Prime (as well as  Ironhide) in the original 1980s  Transformers animated series. More recently, he has reprised his role as Optimus Prime in  Michael Bay's live-action  Transformers film series, the  video games  Transformers: War for Cybertron and  Transformers: Fall of Cybertron,  and the new TV series,  Transformers: Prime.