08/27/2026
SAD NEWS:
In Memory of Peter Cullen (1941–2026)
Voice Actor. Legend. The Voice of Optimus Prime.
We are deeply saddened to share that Peter Cullen, the legendary voice actor whose unmistakable voice brought Optimus Prime to life for generations of Transformers fans, has passed away at the age of 85.
Cullen died Wednesday at his home in Los Angeles, according to his agent. His family shared that he passed peacefully surrounded by loved ones and asked fans to honor his remarkable legacy by serving their communities and leading others with compassion, integrity and loyalty. No cause of death has been publicly announced.
Born in Montreal, Canada, Cullen built an extraordinary voice-acting career spanning more than five decades, but everything changed when he was cast as Optimus Prime in the original Transformers animated series in 1984.
Cullen based Optimus’ distinctive voice and demeanor on his older brother Larry, a Marine veteran who had served in Vietnam. His brother’s advice before Cullen’s audition helped shape the character’s philosophy: don’t portray a Hollywood superhero—portray a real hero. That inspiration ultimately helped Cullen create a version of Optimus defined not simply by strength, but by dignity, compassion and leadership.
His performance became inseparable from the character.
Cullen continued voicing the Autobot leader in 1986’s The Transformers: The Movie and, more than two decades later, returned when Optimus made the leap into live-action with Michael Bay’s Transformers in 2007. He continued portraying Prime throughout the film franchise, most recently voicing the character in 2023’s Transformers: Rise of the Beasts.
But Optimus Prime was only one part of an extraordinary career.
Cullen was also the longtime voice of Eeyore in Winnie the Pooh, brought Monterey Jack to life in Chip ’n Dale: Rescue Rangers, voiced the sinister K.A.R.R. in Knight Rider, and provided the unforgettable vocal effects of the creature in 1987’s Predator. His extensive animation credits stretched across some of the most recognizable programs of the 1980s and beyond.
Still, it is Optimus Prime that made Cullen something more than a prolific voice actor.
For more than 40 years, that voice represented courage, sacrifice, compassion and hope. Children who first heard Cullen as Optimus in the 1980s eventually introduced the character to their own children, allowing his performance to cross generations in a way few voice actors ever experience.
Peter Cullen didn’t simply provide the voice of Optimus Prime.
For millions of fans, Peter Cullen was Optimus Prime.
Up Your Geek extends our deepest condolences to Peter Cullen’s family, friends, colleagues and generations of Transformers fans around the world.
Rest in power, Peter. 🕊️
“Be strong enough to be gentle.”