As HBO’s Harry Potter adaptation continues to film its first season, fans are buzzing with speculation over who could step into the shadowy, snake-eyed role of Lord Voldemort. It's been widely reported—but not confirmed—that Warner Bros. has cast its new Voldemort, but are keeping the news a secret. Nicholas HoultCinemaCon 2025 - Warner Bros. Pictures Presentation - Arrivals | Gabe Ginsberg/GettyImagesLast year, we learned that Nicholas Hoult had auditioned for several roles in the original Harry Potter films, including the titular character himself. While British actors have typically been the favorite for Harry Potter, HBO bucked that trend when they cast Lithgow as Dumbledore. The Harry Potter series is expected to premiere in 2027.