Peter Cullen, the actor whose voice gave Optimus Prime its steady, commanding sound across four decades of Transformers cartoons, films and games, died Wednesday, August 26, 2026, at his home in Los Angeles. He was 85. His agent, Kevin Motley, confirmed the death to media outlets, including ABC News, on Thursday, August 27.
Major outlets including ABC News/ABC7, NBC Los Angeles, The Hollywood Reporter, Variety, The Washington Post, Deadline, TMZ, Forbes, Fox19 and Anime News Network reported the death within 24 hours.
No cause of death has been made public, and neither his family nor his agent has disclosed one.
Cullen’s family released a statement saying he “passed away peacefully, surrounded by his loving family — and held in the hearts of his many friends and countless fans worldwide.” They asked people to honor his legacy “by serving your communities and leading others with compassion, integrity, and loyalty,” and to remember one of his own lines: “be strong enough to be gentle.” He had four children and three grandchildren.
Key facts
- Who: Peter Cullen, voice of Optimus Prime (Transformers) and Eeyore (Winnie the Pooh)
- Died: Wednesday, August 26, 2026, at his home in Los Angeles
- Age: 85
- Confirmed by: his agent, Kevin Motley, on August 27
- Cause of death: not disclosed
- Career: more than 200 acting and voice credits, early 1960s to 2026
- Optimus Prime: voiced the role for more than 40 years, from 1984 to his death
- Family: four children, three grandchildren
A voice fans grew up with
Cullen voiced Optimus Prime, leader of the Autobots, from the original 1984 animated Transformers series through the Michael Bay-era live-action films, later television series and video games — a role he held for more than 40 years. He was also the voice of Eeyore in Winnie the Pooh productions, a part he played for decades starting with “The New Adventures of Winnie the Pooh.”
Those were his most famous roles, but far from his only ones. Over a career that ran from the early 1960s to 2026, Cullen built more than 200 acting and voice credits, including:
- Monterey Jack in “Chip ‘n Dale Rescue Rangers”
- The original KARR in “Knight Rider”
- Creature vocalizations for the title character in the 1987 film “Predator”
- Venger in “Dungeons & Dragons”
- An early Western voice of Mario, in the 1982-83 cartoon “Saturday Supercade”
- Announcer on “The Sonny & Cher Comedy Hour”
Born Peter Claver Cullen on July 28, 1941, in Montreal, Quebec, Cullen was a member of the first graduating class of the National Theatre School of Canada in 1963 and worked in classical and repertory theater, including at Toronto’s Crest Theatre, before moving into voice acting.
In 2023, Cullen received a Lifetime Achievement Award from the National Academy of Television Arts and Sciences at the 2nd Children’s and Family Emmy Awards.
Career timeline
- 1941 — Born Peter Claver Cullen in Montreal, Quebec
- 1963 — Graduates in the first class of the National Theatre School of Canada
- 1982-1983 — Voices Mario in the cartoon “Saturday Supercade”
- 1984 — Begins voicing Optimus Prime in the original animated “Transformers” series
- 1987 — Voices the creature’s vocalizations in “Predator”
- 2023 — Receives a Lifetime Achievement Award from the National Academy of Television Arts and Sciences
- August 26, 2026 — Dies at his home in Los Angeles at age 85
- August 27, 2026 — His agent confirms the death to media outlets
Where Optimus Prime’s voice came from
Cullen said he shaped Optimus Prime’s character around advice from his brother, Larry Cullen, a retired United States Marine Corps captain and Vietnam veteran: that a real hero should be “strong enough to be gentle.” That idea became a defining note in how Cullen played the character, and his family echoed it directly in their statement announcing his death.
Tributes
Tributes followed the announcement, including posts from accounts associated with Adult Swim and “Invincible,” and fans shared memories widely on social media within hours of the news breaking, though no official statement from Hasbro or the Transformers franchise was confirmed in the reporting reviewed as of August 27, 2026.