Other castings recently confirmed include Operation Mincemeat star Johnny Flynn as Lucius Malfoy, The Crown’s Bertie Carvel as Cornelius Fudge, The Morning Show’s Bel Powley as Petunia Dursley, and Eric and Ernie star Daniel Rigby as Vernon Dursley.

The Harry Potter series has expanded its cast as HBO officially revealed nine additional actors who will be joining the show. In a press release dated June 9, 2025, posted on Warner Bros.

Johnny Flynn, known for Netflix's Ripley and films like The Dig, will play Lucius Malfoy with young actor Lox Pratt, star of BBC's Lord of the Flies, as his son Draco - Harry's classmate and nemesis.