Voice actor Peter Cullen did the voice of Optimus Prime in the original Transformers series, in the 2007 Transformers, 2009 Transformers: Revenge of the Fallen, and 2011 Transformers: Dark of the Moon. He also did the voice of Optimus Prime in the Transformers: War for Cybertron video game.
In addition to those, he also did the voice for Eeyore, in the Winnie-the-Pooh series, and was the first person to voice Nintendo’s Mario character. He also did voices for other characters in: Duck Tales, Alvin and the Chipmunks, The Adventures of Captain Planet, Teenage Mutant Ninja Turtles, Chip ‘n Dale Rescue Rangers, Garfield and Friends, Darkwing Duck, The Jetsons, and Gremlins.