Lox Pratt is slated to play Draco Malfoy, with Johnny Flynn as his father Lucius Malfoy. In more family castings, Bel Powley is set as Petunia Dursley and Daniel Rigby as Vernon Dursley, Harry’s aunt and uncle. Additionally, Katherine Parkinson will play Ron’s mom, Molly Weasley.

The cast includes (from left to right in the photo below) Katherine Parkinson as Molly Weasley, Lox Pratt as Draco Malfoy, Johnny Flynn as Lucius Malfoy, Leo Earley as Seamus Finnigan, Alessia Leoni as Parvati Patil, Sienna Moosah as Lavender Brown, Bel Powley as Petunia Dursley, Daniel Rigby as Vernon Dursley and Bertie Carvel as Cornelius Fudge.

More wizards and witches have joined the upcoming "Harry Potter" HBO series. HBO has announced nine more actors joining the show, including those playing the Malfoy family members and their matriarch, Molly Weasley. Newcomer Lox Pratt will play Draco Malfoy, while "Emma" actor Johnny Flynn has been cast as Lucius Malfoy.