Peter Cullen, the Canadian voice actor whose deep, steady delivery made Optimus Prime a defining figure in Transformers, has died at 85. The Associated Press reported that Cullen died Wednesday at his home in Los Angeles, according to his agent Kevin Motley. His family asked admirers to remember him through service, compassion and loyalty, ideas closely associated with the heroic character he voiced for generations.

Cullen’s best-known work began with the syndicated 1984 Transformers animated series. His interpretation of Optimus Prime gave the Autobot leader a calm authority that separated the character from a simple toy-line mascot. The voice carried through later animated productions, films, games and fan events, allowing Cullen to remain connected to the franchise even as its cast and formats changed.

The role was only one part of a career that began on television. AP’s obituary account noted that Cullen worked as an announcer on The Smothers Brothers Comedy Hour before appearing in programs including The Smurfs and several G.I. Joe productions. He also voiced Eeyore in the Winnie the Pooh cartoon franchise, showing a different range through the donkey’s melancholy, restrained humor.

The Washington Post reported that no cause of death had been disclosed. That distinction matters because the public record confirms the death and location but does not establish a medical explanation. Cullen’s family statement focused instead on the example they believed he set and on the qualities they want audiences to carry forward.

Fans searching for Peter Cullen are therefore revisiting more than a single performance. Optimus Prime’s voice became a bridge between 1980s animation and later generations who discovered Transformers through cinema, streaming, games or collectibles. The Guardian likewise described Cullen’s work as central to the character’s identity, while noting his other major voice role as Eeyore.

Cullen’s passing closes a chapter for a performer whose contribution was heard rather than seen. His work helped establish how a fictional leader should sound: measured under pressure, protective of others and capable of turning a short line into a lasting memory. Those traits explain why his death prompted an immediate wave of searches across entertainment and fan communities.