Peter Cullen, iconic voice of Optimus Prime, passes away at 85
Peter Cullen, the actor known for voicing Optimus Prime in the Transformers franchise and Eeyore in Winnie the Pooh, died at his Los Angeles home. He had a five-decade career in voice acting and also served as an ambassador for NASA's OPTIMUS PRIME challenge. His manager confirmed the news.
Cullen’s career spanned five decades, beginning with a 1969 role as a Québécois astronaut on *The Buddies*, which led to announcing work on *The Smothers Brothers Comedy Hour* and later *The Sonny & Cher Comedy Hour*. His brother Larry, a Vietnam veteran, inspired his iconic Optimus Prime audition after Cullen described the character as a “hero truck.” Beyond Transformers, he voiced Eeyore for Disney across decades and served as NASA’s OPSPARC ambassador, linking pop culture to STEM education. He also became a cult figure as the voice of Cartoon Network’s Toonami block from 1999 to 2008.
Cullen’s passing could resonate deeply with multiple generations—those who grew up with the 1980s animated series, live-action film audiences, and late-night Toonami viewers. His voice represented stability and heroism, so his loss may prompt renewed appreciation for voice actors’ cultural impact. The NASA ambassador role suggests his legacy could inspire continued interest in space and science among young fans, while the Transformers franchise may see tributes or commemorative releases.