After months of speculation, HBO has revealed a handful of actors in the highly anticipated series.

HBO also confirmed two guest roles: Luke Thallon as Quirinus Quirrell and Paul Whitehouse as Argus Filch.

A press release emphasizes how the new series will serve as a spacious vessel forJ.K.

RUPERT GRINT as Ron Weasley, DANIEL RADCLIFFE as Harry Potter, and EMMA WATSON as Hermione Granger in Harry Potter: Deathly Hallows Part 2 (2011)

Rupert Grint, Daniel Radcliffe, and Emma Watson in ‘Harry Potter and the Deathly Hallows, Part 2’.Credit:Warner Bros.

Mark Mylod, a key figure on HBO’sSuccession, will serve as an executive producer and direct several episodes.

Rowling will also step into an executive producer role.

Lithgowopened up about the roleon a recent episode of theSmartlesspodcast.

Richard Harris as Professor Albus Dumbledore in Harry Potter and the Chamber of Secrets (2002); John Lithgow at the Deadline 2025 Sundance Film Festival Studio presented by Casamigos held at the Deadline Studio on January 24, 2025 in Park City, Utah; Michael Gambon as Albus Dumbledore in Harry Potter and the Half-Blood Prince (2008)

Richard Harris, John Lithgow, and Michael Gambon.Peter Mountain/Warner Bros.; Deadline/Deadline via Getty; Jaap Buitendijk/Warner Bros.

“You know, Dumbledore, he’s kind of this nuclear weapon,” Lithgow said.

“He only goes off very, very occasionally.

And I don’t think it’s gonna be that hard a job.”

harry potter and fantastic beast movies ranked

Essiedu will play Severus Snape, the Slytherin anti-hero famously played by the lateAlan Rickman.

In a note to Rickman, Rowling called Snape"my most complex character."

McTeer plays Minerva McGonagall, Hogwarts professor and head of Gryffindor House.

Card Placeholder Image

Maggie Smithportrayed the character in the film franchise, while Fiona Glascott played a young Minerva in theFantastic Beastsfilms.

The half-giant Hagrid is among the first characters we meet in theHarry Potteruniverse.

That said, hereceived rave reviewsfor his turn as Hamlet in the Royal Shakespeare Company’s 2025 production.

Paapa Essiedu attends the 2024 Harper’s Bazaar Women of the Year Awards, held in partnership with The Platinum Card by American Express, at Claridge’s Hotel on November 5, 2024 in London, England; Alan Rickman as Severus Snape in Harry Potter and the Order of the Phoenix (2007)

Paapa Essiedu at 2024’s Harper’s Bazaar Women of the Year Awards; Alan Rickman as Snape.Dave Benett/Getty; Murray Close/Warner Bros.

The role was portrayed by Ian Hart in the film franchise.

He played Sir Cadogan, a knight who appears in a painting in Hogwarts' Divination corridor.

In theHarry PotterTV series, Whitehouse will play Argus Filch, the feline-loving caretaker of Hogwarts.

Janet McTeer attends the photocall for “Kaos” at The Old Sessions House on August 28, 2024 in London, England; MAGGIE SMITH in Harry Potter and the Half-Blood Prince (2009)

Janet McTeer at The Old Sessions House in London; Maggie Smith as Minerva McGonagall.Kate Green/Getty; Courtesy of Warner Bros. Pictures

David Bradley played the role originally.

Nick Frost attends the “Timestalker” UK Gala Screening at Curzon Soho on October 07, 2024 in London, England; ROBBIE COLTRANE as Hagrid in Harry Potter and the Chamber of Secrets

Nick Frost at Curzon Soho in London; Robbie Coltrane as Hagrid.Lia Toby/Getty; Peter Mountain/Warner Bros.

Luke Thallon attends “The Tomorrow Gala For The Old Vic” on April 20, 2023 in London, England; Ian Hart as Professor Quirinus Quirrell in Harry Potter and the Sorcerer’s Stone (2001)

Luke Thallon at ‘The Tomorrow Gala For the Old Vic’; Ian Hart as Quirrell.Eamonn M. McCormack/Getty; Peter Mountain/Warner Bros.

Paul Whitehouse attends The 48th Broadcasting Press Guild Awards Lunch 2022 at The Brewery on March 25, 2022 in London, England; David Bradley in HARRY POTTER AND THE GOBLET OF FIRE

Paul Whitehouse at a 48th Broadcasting Press Guild Awards lunch in London; David Bradley as Filch.Eamonn M. McCormack/Getty; Warner Brothers/Courtesy Everett