Peter Cullen, the Canadian-born voice actor who brought Optimus Prime to life in the Transformers franchise and voiced Eeyore in Disney`s Winnie the Pooh, has died at age 85. Cullen passed away peacefully on Wednesday, August 26, 2026, at his home in Los Angeles, surrounded by family, according to his agent Kevin Motley. The cause of death has not been publicly disclosed.

Peter Cullen, the Canadian-born voice actor who brought Optimus Prime to life in the Transformers franchise and voiced Eeyore in Disney's Winnie the Pooh, has died at age 85. Cullen passed away peacefully on Wednesday, August 26, 2026, at his home in Los Angeles, surrounded by family, according to his agent Kevin Motley. The cause of death has not been publicly disclosed.

Cullen's death marks the end of an era for generations of fans who grew up with his resonant, authoritative voice as the leader of the Autobots and the gentle, melancholic tones of the beloved donkey from the Hundred Acre Wood.

A Voice That Defined a Franchise

Cullen began his most famous role as Optimus Prime in the Transformers television series in 1984. The character—the heroic leader of the Autobots—would become synonymous with Cullen's voice for over four decades. He reprised the role for seven Hollywood films from 2007 to 2023, including Michael Bay's live-action Transformers (2007) and its sequels, most recently Transformers: Rise of the Beasts (2023).

The character's 1986 film appearance in The Transformers: The Movie, which celebrated its 40th anniversary in 2026, famously devastated fans by killing off Optimus Prime—though the character later returned.

Beyond Transformers, Cullen voiced Eeyore in The New Adventures of Winnie the Pooh from the late 1980s and numerous related shows, films, and games. His other memorable voice roles included Monterey Jack in Chip 'n Dale: Rescue Rangers, KARR (the evil counterpart to KITT) in Knight Rider, the clicking vocalizations of the Predator in the 1987 film, and the roars of King Kong in the 1976 film.

The Marine Brother Who Inspired a Hero

Cullen's iconic Optimus Prime voice was shaped by advice from his older brother, a decorated U.S. Marine and Vietnam War veteran. Before Cullen's audition for the role, his brother offered guidance that would define the character for generations.

"He said, 'Don't go yelling and screaming. He's strong enough to be gentle,'" Cullen recalled in a 2011 interview.

Cullen described how his brother's words resonated during the audition: "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".

Cullen gave his brother a share of the wages he received for playing Optimus Prime until his brother's death.

Awards and Recognition

Cullen's performance as Optimus Prime earned him a Daytime Emmy nomination for Outstanding Performer in an Animated Program in 2011. In 2023, he received a lifetime achievement award at the Children's & Family Emmy Awards.

In a 2011 interview with USA TODAY, Cullen named Eeyore as his "next favorite" character after Optimus Prime. "I love characters who do good or make people feel good," he said.

Family Statement and Legacy

In a statement, Cullen's family said: "Peter Cullen passed away peacefully, surrounded by his loving family – and held in the hearts of his many friends and countless fans worldwide".

The family asked fans to "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'".

A Career Spanning Decades

Cullen started his career on Canadian television and radio before becoming a regular on programs like The Sonny & Cher Show. He later decided to concentrate on voice acting.

His voice credits spanned 1980s and 1990s animated series including Spider-Man, Donkey Kong, Alvin & the Chipmunks, Dungeons & Dragons, My Little Pony, DuckTales, and Gummi Bears. More recently, he voiced Thaedus on the Prime Video animated series Invincible.

Industry and Fan Impact

Cullen's death has prompted an outpouring of tributes from fans and industry figures worldwide. His voice work shaped the childhoods of multiple generations, bridging the gap between the 1980s animated series and the modern blockbuster film franchise.

The Transformers franchise remains one of the most lucrative entertainment properties globally, with Cullen's voice as its emotional and moral anchor. His portrayal of Optimus Prime established the character not merely as a action hero but as a figure of wisdom, compassion, and unwavering integrity—qualities Cullen himself embodied, according to those who knew him.

What Happens Next

As of August 27, 2026, Cullen's cause of death has not been publicly disclosed. His agent, Kevin Motley, confirmed the death to multiple outlets including USA TODAY, TMZ, and the BBC.

Fans and industry colleagues continue to share tributes across social media platforms. The Transformers franchise has not announced any official commemorative plans, though given Cullen's central role in the property's identity, such tributes are widely anticipated.

FAQ

Q: When did Peter Cullen die?
A: Peter Cullen died on Wednesday, August 26, 2026, at his home in Los Angeles, California.

Q: How old was Peter Cullen when he died?
A: Peter Cullen was 85 years old at the time of his death.

Q: What was Peter Cullen's cause of death?
A: As of August 27, 2026, Cullen's cause of death has not been publicly disclosed.

Q: What characters did Peter Cullen voice?
A: Cullen was best known as Optimus Prime in the Transformers franchise and Eeyore in Disney's Winnie the Pooh. He also voiced the Predator (1987), King Kong (1976), Monterey Jack in Chip 'n Dale: Rescue Rangers, and KARR in Knight Rider.

Q: How long did Peter Cullen voice Optimus Prime?
A: Cullen voiced Optimus Prime from the original 1984 animated series through the 2023 film Transformers: Rise of the Beasts—a span of nearly 40 years.

Q: What award did Peter Cullen win?
A: Cullen received a lifetime achievement award at the Children's & Family Emmy Awards in 2023. He was also nominated for a Daytime Emmy in 2011.

Q: Who confirmed Peter Cullen's death?
A: Cullen's death was confirmed by his agent, Kevin Motley, to multiple outlets including USA TODAY, TMZ, and the BBC.

Q: Where was Peter Cullen from?
A: Peter Cullen was Canadian, born in Montreal.

KEY TAKEAWAYS

• Peter Cullen, the voice of Optimus Prime and Eeyore, died at age 85 on August 26, 2026, at his Los Angeles home
• His career spanned over 40 years, from the 1984 Transformers animated series through the 2023 film Transformers: Rise of the Beasts
• Cullen's iconic Optimus Prime voice was inspired by his brother, a U.S. Marine veteran, who advised him to "be strong enough to be gentle"
• He received a Daytime Emmy nomination in 2011 and a lifetime achievement award at the Children's & Family Emmy Awards in 2023
• His other notable roles included Eeyore, the Predator, King Kong, Monterey Jack, and KARR
• The cause of death has not been publicly disclosed as of August 27, 2026