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Boiler suit shock rockers Slipknot don’t immediately spring to mind when you think of a Saturday night in with the kids.

But their scary front man has been roped in by the BBC to give Doctor Who viewers a proper fright this series.

Corey Taylor – who has sold 60 million albums with the heavy metal group – will lend his ­deafening roar to alien warlord the Fisher King as he battles Time Lord Peter Capaldi.

Corey, 41, is a massive Whovian and when producers heard ­Slipknot were playing in Cardiff in January, they put out feelers.

An insider said: “Production got in touch with Slipknot because they heard Corey and the band love the show.”

(Image: BBC)

US metalhead Corey was named the seventh-greatest metal front man ever by NME magazine.

The source added: “They gave them a VIP tour and asked if Corey wanted to record his famous scream.

"He agreed instantly and was made up about it.”

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Fisher King, a green hulk of a creature with horns protruding from his body, appears next Saturday.

He is played by the tallest Brit, 7ft 7in Neil Fingleton, and his speaking voice is Shaun of the Dead’s Peter Serafinowicz.

(Image: PA)

But, having penned such blood-curdling tunes as Wait and Bleed and ­Psychosocial, it will be Corey’s bellow that gives him the horrific edge.

I’m just glad Slipknot isn’t doing the theme tune.