Peter Cullen

Peter Cullen (born in 1944 in Montreal, Quebec, Canada) is a voice actor who is best known for providing the voices for Optimus Prime and Ironhide in the original 1980s Transformers series, and the narrator in both American Voltron series (he would subsequently reprise the role of Optimus Prime in the 2007 live action Michael Bay feature film Transformers). He did some additional voice work on the Smurfs cartoon show along with his other fellow Transformers voice actor Frank Welker (the voice of Megatron), who voiced the main cast character Hefty Smurf.