10 'Harry Potter' Stars Who Joined 'Game of Thrones' 

Nick Jonas, Janelle Monae, James Corden and more at EW\'s ultimate pop culture festival.

as Professor Horace Slughorn, and returning to the role of Tom Riddle’s former teacher for 2011’s

. Last month, EW broke the news that Broadbent has booked a new gig on

. The British actor will appear in the show’s seventh season in a “significant” role with few other public details currently available.

Image Credit: Warner Bros. Pictures; Danny Martindale/WireImage

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