Beloved voice actor Peter Cullen, who passed away on August 26, 2026, left an indelible mark on both 'Knight Rider' and 'Transformers'.

Cullen is perhaps best known for his iconic portrayal of Optimus Prime in the 'Transformers' franchise. For related coverage, explore our detailed analysis on Technology and Digital Systems.

Peter Cullen Played Details and Timeline

However, Cullen's voice acting prowess extended beyond the Autobot leader to include K.A.R.R., an evil counterpart to K.I.T.T. in 'Knight Rider'.

K.A.R.R. was a prototype with a programming that prioritized its own survival, often putting it at odds with Michael Knight and his trusty car.

Cullen voiced K.A.R.R. when the vehicle debuted in Season 1, Episode 9 of 'Knight Rider', after thieves inadvertently unleashed the malicious auto.

Peter Cullen Played Next Steps and Impact

Interestingly, Cullen's work on both franchises began around the same time, with 'The Transformers' premiering in syndication in 1984 and 'Knight Rider' airing its first episode featuring K.A.R.R. in 1982.

Cullen reprised his role as K.A.R.R. in an episode of the NBC reboot of 'Knight Rider' in 2009, allowing him to revisit the character in a new iteration.

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A testament to Cullen's enduring legacy is the release of a special collectible Transformers figure named Agent Knight in 2024, which transforms from a Pontiac Firebird Trans Am into a robot.

As we remember Peter Cullen's remarkable voice acting career, it's clear that his contributions to both 'Knight Rider' and 'Transformers' will continue to be celebrated

While the shows never had an official televised crossover, Hasbro released a special collectible Transformers figure named Agent Knight in 2024.

As you might guess, the toy transforms from a familiar Pontiac Firebird Trans Am into a robot.

Peter Cullen, the beloved voice actor who passed away on August 26, 2026 , was best known for playing Optimus Prime in the "Transformers" franchise. But Optimus Prime wasn't Cullen's only automotive role.

Cullen played K.A.R.R., an evil counterpart to K.I.T.T., in "Knight Rider." While K.I.T.T., the witty, intelligent Pontiac Firebird Trans Am that assisted David Hasselhoff's Michael Knight as they fought crime on the roads, was one of the best TV cars of the '80s , K.A.R.R. was its villainous counterpart. K.A.R.R.

(which stood for Knight Automated Roving Robot) was a prototype whose programming prioritized its own survival. Instead of protecting drivers, K.A.R.R. protected itself, even if that meant ejecting whoever was behind the wheel to save weight and drive a little faster.