Peter Cullen is the voice actor best known as the voice of Optimus Prime in the Transformers cartoons, and the Michael Bay films.
Peter Cullen voiced Orgrim Doomhammer in the cancelled game Warcraft Adventures. Later Blizzard Entertainment employed him to narrate their trailers for Warcraft III: Reign of Chaos in 2001, and the reveal cinematic trailer for World of Warcraft. He would continue to narrate World of Warcraft trailers for E3 2003, E3 2005 and E3 2006. He also voiced a World of Warcraft commercial featuring actor Steve Van Zandt.