Corey Taylor provided the roar for both the Fisher King and the Twelfth Doctor's hologram ghost in the Doctor Who episode Before the Flood.
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Corey Taylor with his Slipknot mask in 2009
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Corey Taylor unmasked in 2011
He is the lead singer of the heavy metal bands Slipknot, Stone Sour, and a Doctor Who fan. He was given a tour of the set and agreed to provide his signature roar for the episode.