David Harbour is used to entering alternate dimensions on Stranger Things, but for his next role he's becoming an alternate version of Mr Burns on The Simpsons.

The Hopper actor has signed up to the long-running animated series, appearing in an episode that parodies Undercover Boss.

In the season 32 episode, Nuclear Power Plant boss Mr Burns spots some graffiti on the wall that declares it is "not excellent", and decides to go undercover to sort the problem, with his disguised version voiced by Harbour.

Matt Groening Fox

"Like Mission: Impossible, they give him a whole new body and face and voice so that this people in the plant won't possibly recognise him," executive producer Al Jean told Entertainment Weekly.

"He's supposed to be a blue-collar guy from another part of the plant, but everything he says is like Mr Burns. He wants to go to karaoke and sing songs from the 1890s, but the guys don't see through it."

We just can't wait to hear Harbour do an evil-sounding "excellent".

James Devaney Getty Images

The Simpsons also signed up Thor: Ragnarok and Lord of the Rings star Cate Blanchett for another episode next season, the Oscar-winner voicing a canine psychologist named Elaine who helps a depressed Santa's Little Helper.

Elsewhere, Harbour said that Hopper "needed to die" at the end of Stranger Things season 3 following his apparent demise.

Stranger Things seasons 1-3 are now streaming on Netflix.

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