Warwick Davis to Return as Professor Flitwick for HBO's "Harry Potter" Series

HBO‘s “Harry Potter” series is filling out Hogwarts’ staff and students.

“Harry Potter” alum Warwick Davis, who played Charms Professor Filius Flitwick in all eight original films, is reprising the role for the HBO series. 

While Davis was double-billed in the Potter films as both Flitwick and Griphook, he will only play the former this time. The goblin banker will instead be played by Leigh Gill.

Joining the Hogwarts staff alongside Davis are Sirine Saba as Herbology Professor Pomona Sprout, Richard Durden as the ghostly Professor Cuthbert Binns, and Bríd Brennan as Madam Poppy Pomfrey. As for the students, Elijah Oshin joins the cast as half-blood Dean Thomas, while Finn Stephens and William Nash join as Draco Malfoy’s cronies, Vincent Crabbe and Gregory Goyle, respectively.

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Leading HBO’s “Harry Potter” series are Dominic McLaughlin as the titular boy wizard, Arabella Stanton as Hermione Granger, and Alastair Stout as Ron Weasley. The young trio was selected from more than 30,000 actors who auditioned in a casting call last fall.

Other cast members include John Lithgow as Albus Dumbledore, Nick Frost as Hagrid, Janet McTeer as Minerva McGonagall, Paapa Essiedu as Severus Snape, 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, and Bertie Carvel as Cornelius Fudge. Bel Powley as Petunia Dursley and Daniel Rigby as Vernon Dursley. Additional names revealed on Monday were Rory Wilmot as Neville Longbottom, Amos Kitson as Dudley Dursley, Louise Brealey as Madam Rolanda Hooch, Anton Lesser as Garrick Ollivander, Tristan and Gabriel Harland as Fred and George Weasley, Ruari Spooner as Percy Weasley, and Gracie Cochrane as Ginny Weasley.

Production is now underway at Warner Bros.’ Leavesden Studios in the U.K., and HBO has been slowly rolling out its expansive cast for the Wizarding World. 

Filming on Season 1 is expected to last until spring of 2026, with Season 2 starting production a few months later. Each of the seven “Harry Potter” books will make up an entire season.

The series will debut in 2027 on HBO and HBO Max (where available) and is led by showrunner and writer Francesca Gardiner (“His Dark Materials,” “Killing Eve”) and director Mark Mylod (“Succession”). 

Gardiner and Mylod are executive producing alongside series author J.K. Rowling, Neil Blair, and Ruth Kenley-Letts of Brontë Film and TV, and David Heyman of Heyday Films.

The “Harry Potter” series is being made by HBO in association with Brontë Film and TV and Warner Bros. Television.