Instagram/Andy Serkis TV Andy Serkis reveals interest in playing Voldemort in HBO's Harry Potter series. Could the Dark Lord be his next iconic role? May 3, 2026 AceShowbiz - The upcoming HBO adaptation of Harry Potter is well underway with most of its principal cast already announced. However, one of the most significant roles yet to be cast is that of Lord Voldemort. This character, known as the Dark Lord, does not appear in his fully resurrected form until the fourth story, Harry Potter and the Goblet of Fire.