On Aug. 26, 2026, voice actor Peter Cullen passed away peacefully at his home in Los Angeles, surrounded by his family. He is best known for portraying Eeyore in the Winnie the Pooh franchise, and most notably, Autobot leader Optimus Prime in the Transformers franchise.
A legend in the world of voice acting, Cullen’s career began in the mid-1960s, serving as an announcer for “The Smothers Brothers Comedy Hour,” before moving more heavily into voice acting in the 1970s. It was not until 1984 that he landed his most iconic role: Optimus Prime, the leader of the Autobots in the Transformers franchise.
Optimus has taken on many different forms and personalities as the franchise has progressed, both figuratively and literally, moving beyond his classic 1980 Freightliner FL86 tractor-trailer form. Whether he was the optimistic, almost parental figure of Generation 1, the war veteran from the live-action Michael Bay films, or the stoic, no-nonsense powerhouse from “Transformers Prime,” Cullen’s voice remains the most recognizable aspect of the character. In an interview, Cullen detailed how he had modeled Optimus’s voice off of his own brother, U.S. Marine Corps. and Vietnam veteran Larry Cullen. Larry Cullen told his brother to act like a real hero rather than a Hollywood leader, advising him to “be strong enough to be gentle.” Every iteration of Optimus voiced by Cullen carries this philosophy: a strong, imposing presence paired with a gentle and even inspirational tone.
Cullen’s passing came weeks before the theatrical re-release of 1986’s “The Transformers: The Movie,” the midpoint of the 1984 Transformers cartoon. The “Apology Tour” for the film played through Sept. 17 to Sept. 21 alongside a reformatted soundtrack, as well as a bonus end-credit short film featuring Cullen’s final performance of Optimus Prime.
“The Transformers: The Movie” takes place in the year 2005, 20 years after the first two seasons of the cartoon. The threat of the planet-eating cosmic horror Unicron looms over the planet Cybertron, and a new group of Autobots must adventure into deep space to rescue their friends and prevent Cybertron’s destruction. The movie features some of the most famous and infamous scenes in the franchise, including Optimus joining the first battle of the film to Stan Bush’s “The Touch”, Autobot Hot Rod’s ascent into Rodimus Prime through the Matrix of Leadership, Optimus and Megatron’s final confrontation, and most infamously, the death of Optimus Prime. Ever since Cullen’s passing, people have noted the eerie coincidence of how the date matched the timestamp of Optimus’s final flicker of life: 00:26:08.
In the post-credits sequence of the “Apology Tour” re-release, a bonus short film depicts Cullen’s final performance as the Autobot leader. The film takes place shortly after Optimus’ death in the movie. His spirit is transported to an afterlife, where the voice of a cosmic entity known as “The One” speaks to him.
The One initially praises Optimus for his unyielding devotion to the cause of good, referencing various iterations of him throughout the ages in movies and television series. Optimus, unsatisfied, requests to be sent back to the world of the living to continue the fight, yet The One questions whether or not there is any point in his continued sacrifice, urging him to let go and allow others to continue in his stead. Optimus refuses to abandon his friends and comrades, enduring visions of destruction and endless fighting. Although Optimus opts to fight until the end, ultimately, he realizes that the war between good and evil will never end, and that the best thing he could do was to choose peace and let his spark rest. The good fight will continue to be fought by those he has led and inspired. The short ends with Optimus putting his spark to rest, “to light our darkest hour.”
Many quotes from Optimus Prime have circulated since Cullen’s death, with many carrying a common theme: not grieving, but instead to look ahead and move forward. The series “Transformers Prime” ends with the death of Optimus Prime, and his final words to the Autobots: “Above all, do not lament my absence. For in my spark, I know that this is not the end, but merely, a new beginning. Simply put… another transformation!”
