Biografía

Stated that of all the roles that he has done, his signature role, Optimus Prime, is his favorite. He described playing Prime in the 2007 film as "slipping into a very old, very comfortable pair of shoes". He explained his preference for the character by saying "making people happy makes me happy".

Was one of only three voice-over actors from Transformers (1984) animated series to voice a character in the live-action film versions Transformers - La venganza de los caídos (2009) and Transformers: El lado oscuro de la luna (2011). The others being Charlie Adler and Frank Welker. Cullen once again provided the voice of the heroic Autobot leader Optimus Prime for the films.

Though he provided vocals for the inhuman alien Predator in the Predator films and the voice of Eeyore in Winnie the Pooh, he is best known for voicing the heroic Autobot leader Optimus Prime on Transformers (1984) animated series. Though this was originally intended for his character to remain dead after being killed in Transformers: La película (1986), the death caused such a public backlash that the surprised producers brought the character back in two separate episodes of the third season (ultimately saving the world in the second appearance).

Has stated that the voice of legendary American film actor John Wayne had some influence on his choice for the voice of Optimus Prime. However, he clarified in an interview for the 2007 Transformers video game that the inspiration for Prime's voice was actually based on an impression of his older brother's voice -- the authoritative tone he used while serving as an officer with the Marine Corps during the Vietnam War.

Provided the roar of the title character in King Kong (1976), injuring his throat in the process. The experience turned him off of voicing inhuman sounds, though he later made an exception for Depredador (1987).

Everybody's going to approach a character differently, depending upon what they bring to it on their own intellectual level or their feelings from their heart and soul.

I enjoy dramatic narration, of course, because I'm an actor and I started as an actor. But I love things that are a challenge, and I look forward to more work with that in the future. So there's always a sun coming up the following day for me.

My brother was a captain in the Marine Corps and a very big hero in my life.

I immerse myself right into my character whether or not I'm relating to people live as an actor on stage or whatever.

I'm always involved with the Aerospace Program and NASA and Goddard Space Flight Center. And if kids feel so inclined, they can log onto NASA and the Optimus Prime Spinoff Award, which we present every year to some of the brilliant young minds that are taking up into the academics of space, science, technology, math.