HBO Casts New Actors for Harry Potter Series

Production on the second season is already underway.

HBO has announced new cast members for the Harry Potter series who will play Hogwarts ghosts and other inhabitants of the magical school.

David Trelfall, known for the British show Shameless and the thriller Night Train, will voice the Sorting Hat.

Nearly Headless Nick, the ghost of Gryffindor, will be played by Leo Bill from Alice Through the Looking Glass. The role of the Bloody Baron, the Slytherin ghost, went to Andrew Brook from The Agency, and the Fat Friar, the Hufflepuff ghost, will be played by Daniel Fearn from Slow Horses.

Laura Smith, who appeared in Baby Reindeer, will portray the Fat Lady, the magical portrait inhabitant who guards the entrance to the Gryffindor common room.

David Trelfall — Image source: Night Train // BBC / Euston Films.

Leo Bill — Image source: Alice Through the Looking Glass // Disney

Andrew Brook — Image source: Doctor Who // BBC

Daniel Fearn (left) — Image source: Things You Should Have Done (2026) // BBC / Roughcut TV.

The first season of Harry Potter premieres on December 25 on HBO and HBO Max. Meanwhile, filming for the second season is already underway in London, though a premiere date has not yet been announced.

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