HBO's 'Harry Potter' TV show recasts all of the Hogwarts characters with new actors. See who's who in this cast guide.

From Emmy-nominated roles to his casting as Snape in HBO’s ‘Harry Potter’ series, find out more about the British actor here.

John Lithgow is playing Dumbledore in the upcoming TV adaptation of ‘Harry Potter.’ Meet the entire cast so far.

The new HBO original series will feature British actors Nick Frost and Paapa Essiedu alongside US star John Lithgow.

The 66-year-old British actor was previously cast as Sir Cadogan, a talking painting tasked with guarding the Gryffindor Common Room, in the 2004 film Harry Potter and the Prisoner of Azkaban ...

This afternoon, HBO announced major cast members for ... Whitehouse played in a Harry Potter and the Prisoner of Azkaban deleted scene. The character’s painting temporarily guards the entrance ...