1. Egli è meglio conosciuto come la voce di Optimus Prime in originale 1980 Transformers serie animata, and most other incarnations of the character, anche, and Eeyore in the Winnie-the-Pooh franchise.
2. A partire da 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. Da 1967-69, he was the announcer for Smothers Brothers Comedy Hour.
6. Da 1971-74, Egli, 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, e che ha basato la voce del leader di Autobot sul suo fratello maggiore Larry, che ha servito in Vietnam.
10. Lui era più tranquillo e lui era un uomo e un eroe per me,” dice l'attore.