John Lithgow will portray Albus Dumbledore, a role previously played by Richard Harris and Michael Gambon in the original films.
Janet McTeer has been cast as Minerva McGonagall. Previously, this role was played by the late actress Maggie Smith in the Harry Potter movies.
Paapa Essiedu will take on the role of Severus Snape, famously portrayed by Alan Rickman.
Nick Frost is set to play Rubeus Hagrid, despite previously denying rumors of his casting
Luke Thallon has been cast as Professor Quirinus Quirrel, taking over from David Thewlis, who played the role in Harry Potter and the Philosopher’s Stone.
Paul Whitehouse is returning to the Harry Potter world, and this time he will play Hogwarts caretaker Argus Filch. Previously, he played the role of Sir Cadogan in Harry Potter and the Prisoner of Azkaban.