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HBO's Harry Potter Reboot: Confirmed Cast and Characters Revealed

Author:Kristen Update:May 03,2025

Exciting news for Harry Potter fans: HBO's upcoming TV series has announced the first six cast members, bringing new life to some of the wizarding world's most iconic characters. While the roles of Harry, Ron, Hermione, and Lord Voldemort are still under wraps, we now have insight into who will portray Albus Dumbledore, Minerva McGonagall, Severus Snape, and other key figures. Let's dive into the details of the confirmed cast and those still to be announced.

Confirmed Cast:

John Lithgow as Albus Dumbledore

John Lithgow Image Credit: Warner Bros. Discovery/Jessica Howes

John Lithgow, a six-time Emmy and two-time Tony Award winner, steps into the shoes of Albus Dumbledore, the revered headmaster of Hogwarts. Dumbledore, known as one of the most powerful wizards, plays a pivotal role in Harry Potter's journey, with a complex backstory involving his tumultuous relationship with Gellert Grindelwald. Lithgow's extensive portfolio includes roles in "3rd Rock From the Sun," "Dexter," "The Crown," and films like "Shrek," "Interstellar," and "Footloose."

Who played Albus Dumbledore in the Harry Potter films? Richard Harris in "Sorcerer's Stone" and "Chamber of Secrets," Michael Gambon in the remaining films, and Toby Regbo and Jude Law as younger versions.

Janet McTeer as Minerva McGonagall

Janet McTeer Image Credit: Warner Bros. Discovery/Andrew Crowley

Tony and Golden Globe Award winner Janet McTeer will portray Professor Minerva McGonagall, the head of Gryffindor and deputy headmistress of Hogwarts. A key figure from the beginning, McGonagall first appears delivering Harry to the Dursleys. McTeer's notable roles include "Me Before You," "The Menu," "Ozark," and "The Old Man."

Who played Minerva McGonagall in the Harry Potter films? Dame Maggie Smith in the original series and Fiona Glascott in "Fantastic Beasts."

Paapa Essiedu as Severus Snape

Paapa Essiedu Image Credit: Warner Bros. Discovery/Ruth Crafer

Emmy-nominated actor Paapa Essiedu takes on the complex role of Severus Snape, the enigmatic Potions professor and head of Slytherin. Snape's deep connection to Harry and his parents adds layers to his character, making him one of the series' most pivotal figures. Essiedu's previous work includes "I May Destroy You," "Black Mirror," and "Gangs of London."

Who played Severus Snape in the Harry Potter films? Alan Rickman, with Alec Hopkins and Benedict Clarke portraying younger versions.

Nick Frost as Rubeus Hagrid

Nick Frost Image Credit: Warner Bros. Discovery/Lee Malone

Nick Frost will bring the beloved character Rubeus Hagrid to life. As Hogwarts' gamekeeper and groundskeeper, Hagrid is instrumental in rescuing Harry from the Dursleys and becomes one of his closest friends. Frost is well-known for his comedic roles in films like "Shaun of the Dead," "Hot Fuzz," and "The World's End."

Who played Rubeus Hagrid in the Harry Potter films? Robbie Coltrane, with Martin Bayfield as the young Hagrid.

Luke Thallon as Quirinus Quirrell

Luke Thallon Image Credit: Warner Bros. Discovery/Phil Sharp

Luke Thallon steps into the role of Quirinus Quirrell, the Defense Against the Dark Arts professor during Harry's first year at Hogwarts. A relative newcomer, Thallon has appeared in "The Favourite" and "Present Laughter."

Who played Quirinus Quirrell in the Harry Potter films? Ian Hart.

Paul Whitehouse as Argus Filch

Paul Whitehouse Image Credit: Warner Bros. Discovery/Mike Marsland

BAFTA-winning actor Paul Whitehouse will play Argus Filch, Hogwarts' caretaker, often seen with his cat, Mrs. Norris. Whitehouse is recognized for his work in "The Fast Show," "Harry & Paul," and films like "The Death of Stalin" and "Alice in Wonderland."

Who played Argus Filch in the Harry Potter films? David Bradley.

Major Characters Yet to Be Cast:

The casting for several major characters, including Harry Potter, Ron Weasley, Hermione Granger, Lord Voldemort, and many others, is still pending. Fans eagerly await announcements on who will fill these crucial roles.

For more insights, explore our ranking of the 25 best Harry Potter characters from the movies and books, learn about the producing duo leading the charge on HBO's reboot, and follow our guide to reading your way through the Harry Potter books.