Voice actor Peter Cullen, best known for Optimus Prime in 'Transformers,' dies at 85
LOS ANGELES, CALIFORNIA: Peter Cullen, the legendary voice actor behind Optimus Prime, has died at the age of 85. The Canadian voice actor brought the heroic Prime to life across 'Transformers' films, TV shows and video games over decades.
Cullen’s agent, Kevin Moley, informed The Hollywood Reporter of his death. Cullen "passed away peacefully," his family said in a statement. He was also the voice of the gloomy Eeyore in dozens of 'Winnie the Pooh' projects.
Peter Cullen, iconic voice of Optimus Prime in 'Transformers,' dies at 85
Cullen’s family remembered the legendary voice actor with a heartfelt statement following his death at 85. Cullen “passed away peacefully, surrounded by his loving family, and held in the hearts of his many friends and countless fans worldwide,” his family said in a statement.
They ask “that you honor his remarkable legacy by serving your communities and leading others with compassion, integrity and loyalty and always remember ‘be strong enough to be gentle.’”
Peter Cullen has sadly passed away at the age of 85.
— DiscussingFilm (@DiscussingFilm) August 27, 2026
He is the iconic voice of many characters, including Optimus Prime. pic.twitter.com/HS9MRZ4mq6
The Canadian actor began his most famous role as Prime in the 'Transformers' TV series in 1984. He later returned for several Hollywood films from 2007 to 2023, as well as the franchise’s spin-offs.
Optimus’ death after a duel with the tyrannical Megatron in 'The Transformers: The Movie' (1986) sparked a huge and unexpected outcry. The reaction prompted producers to bring Cullen and the character back for the 1987 straight-to-video movie 'The Transformers: The Return of Optimus Prime'.
Cullen also voiced Optimus in 'The Last Knight' (2017), 'Bumblebee' (2018) and 'Rise of the Beasts' (2023).
How Peter Cullen found the iconic voice of Optimus Prime
Cullen found the voice of Optimus Prime by drawing inspiration from his older brother, Larry, a US Marine and Vietnam War veteran. His brother encouraged him to portray the character as a “real hero” rather than a typical Hollywood hero.
“He said, 'Don't go yelling and screaming. He's strong enough to be gentle." “And that resonated with me, and I could hear his voice all the way to the audition. When he drops down, when he gets serious, is where I found Optimus Prime.”
Peter Cullen sits down at a TFcon panel and starts telling the story behind Optimus Prime’s voice. The room goes quiet the second he mentions his brother.
— TKO Trigger (@TKOTriggerX) August 27, 2026
He talks about living with Larry in 1984, a Marine captain just back from Vietnam with a Bronze Star and Purple Hearts.… pic.twitter.com/5ZQCEWAjeX
According to The Hollywood Reporter, Cullen recalled his brother’s influence in a 2006 interview. “When he came home, I could see a change. He was quieter, and he was a man and a superhero to me,” he said.
“I watched him and listened to him. I’d never had an opportunity to do a superhero, and when that came, [that voice] just came right out of me, and I sounded like Optimus.”
Cullen also explained how he approached his voice acting. “If I can’t see the character, I don’t know what I’m gonna do. I have to have something to relate to, to put myself inside of,” Cullen said of his voice-acting playbook.