1. He is best known as the voice of Optimus Prime in the original 1980s Transformers animated series, and most other incarnations of the character, as well, and Eeyore in the Winnie-the-Pooh franchise.
2. Starting in 2007, Cullen has reprised his role as Optimus Prime in related Transformers media, starting with the first live-action film.
3. Cullen was born on July 28, 1941 in Montreal, Quebec, to Henry L. and Muriel Cullen.
4. He is a member of the first graduating class of the National Theatre School of Canada, which graduated in 1963.
5. From 1967-69, he was the announcer for Smothers Brothers Comedy Hour.
6. From 1971-74, he, Zeigler and Billy Van were series regulars on The Sonny and Cher Comedy Hour.
7. In 1974, Cullen was the announcer and a series regular on The Hudson Brothers Razzle Dazzle Show.
8. He lent his voice to a character in the album “The Story of Halloween Horror” in 1977.
9. He has stated that Optimus is his favorite voice role, and that he based the voice of the Autobot leader on his older brother Larry, who served in Vietnam.
10. He was quieter and he was a man and a hero to me,” says the actor.