Sam Thompson and Pete Wicks will be playing the upcoming celebrity version of The Circle as Countdown host Rachel Riley.
Celebs including Denise van Outen, Duncan James and Charlotte Crosby are taking part in the series, which will air over the course of a week early next month.
Best mates Thompson and Wicks will enter The Circle as a duo but will attempt to catfish their fellow famous faces by masquerading as Countdown's resident mathematician Riley.
Baga Chipz - finalist on RuPaul's Drag Race - will also be a catfish, pretending to be Kim Woodburn, while Loose Women's Kaye Adams and Nadia Sawalha will attempt to pass themselves off as Gemma Collins.
The celebrity edition, which was pre-recorded last autumn, will be followed up by series three of the regular version.