Peter Cullen, Legendary Voice of Optimus Prime and Childhood Icon, Dies at 85

Cullen was honored with an Emmy Lifetime Achievement Award at the 2023 Children's and Family Emmy Awards.
In addition to Optimus Prime, he voiced King Kong in the 1976 Kong remake, portrayed KARR on Knight Rider (1982 and 2009), and provided the iconic predator clicking sounds in Predator (1987).
Earlier in his career, Cullen worked as an announcer on television, notably for The Smothers Brothers Comedy Hour and The Sonny & Cher Comedy Hour.
His Transformers work spanned both animation and live action, including five mainline films plus roles in Bumblebee and Rise of the Beasts.
In a 2014 NPR interview, Cullen recalled approaching Optimus Prime with puzzlement: "I auditioned like everybody else. I was told it was a hero, and I was told it was a truck."
Peter Cullen, the Canadian voice actor who gave Optimus Prime his legendary baritone across four decades of films and shows, has died at 85 in Los Angeles. WPXI confirmed the news, though the cause was not disclosed. His family asked fans to honor him by serving their communities with compassion, integrity, and loyalty — echoing his own motto: 'be strong enough to be gentle.'
Cullen's voice defined an entire generation. From the 1984 animated series through Michael Bay's blockbuster films, he was Optimus Prime. But he was far more than a truck. Consequence noted he was also the definitive voice of Eeyore in Winnie the Pooh, and he voiced King Kong, the Predator, and KARR on Knight Rider — a career that spanned television, animation, and live action.
Cullen auditioned for Optimus Prime like any other actor. Deadline reports he voiced the character in the original 1980s animated series, then returned to lead the franchise through five mainline Michael Bay films, plus Bumblebee and Rise of the Beasts. That's roughly 40 years of 'Transform and roll out.'
In a 2014 NPR interview, Cullen recalled the audition with humor. 'I was told it was a hero, and I was told it was a truck,' he said. He never imagined he'd voice the same character for so long — or touch so many lives while doing it.
Before Optimus Prime, Cullen worked as an announcer on TV. He appeared on The Smothers Brothers Comedy Hour and The Sonny & Cher Comedy Hour early in his career. But voice acting became his true home.
His other voices included King Kong in the 1976 remake, the clicking sounds of the Predator in the 1987 film, and Eeyore — that sad, droopy donkey in Winnie the Pooh. WPXI notes he also voiced KARR on Knight Rider in both 1982 and a 2009 revival. Few voice actors have shaped so many characters across so many genres.
The industry recognized Cullen's impact in 2023. He received an Emmy Lifetime Achievement Award at the Children's and Family Emmy Awards — a rare honor. Tributes poured in from fans and colleagues who grew up with his voice, who understood that behind every giant robot and sad donkey was a craftsman dedicated to his art.
His family's final request says it all: lead with compassion, integrity, and loyalty. 'Be strong enough to be gentle,' they said — words that could have come straight from Optimus Prime himself. Cullen lived by that code, and now an era of voice acting ends with his passing.
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