Every Confirmed Actor in HBO’s ‘Harry Potter’ Series

We’re thrilled to dive into the enchanting world of HBO’s upcoming ‘Harry Potter’ TV series, set to bring J.K. Rowling’s beloved books to life in a fresh way. The show promises a deep exploration of Hogwarts and its iconic characters, with each season adapting one of the seven novels for a new generation of viewers.

Casting news has sparked excitement, revealing a mix of young talent and seasoned actors ready to step into the wizarding world. From the Golden Trio to Hogwarts’ legendary staff, the confirmed stars are poised to deliver a spellbinding performance. Here’s a look at who’s bringing these cherished characters to the small screen.

Dominic McLaughlin as Harry Potter

Dominic McLaughlin, a fresh face in acting, takes on the monumental role of Harry Potter, the Boy Who Lived. He previously appeared in the upcoming Sky comedy ‘Grow,’ sharing the screen with Nick Frost, who also stars in this series. McLaughlin’s casting came after an intense search, with over 30,000 young actors auditioning for the part.

His journey as Harry will follow the young wizard’s adventures at Hogwarts, facing dark forces and forging lifelong friendships. McLaughlin’s relative newness to the screen could bring a raw, authentic energy to the role, much like Daniel Radcliffe did in the original films. We’re eager to see how he embodies this iconic hero.

Arabella Stanton as Hermione Granger

Arabella Stanton steps into the shoes of Hermione Granger, the brilliant and brave witch who’s a key part of the Golden Trio. Stanton’s stage experience shines through, having played the lead in ‘Matilda: The Musical’ on London’s West End and Control in ‘Starlight Express.’

Her portrayal will likely capture Hermione’s sharp mind and fierce loyalty, traits that made the character a fan favorite. Stanton’s theatrical background suggests she’ll bring depth to Hermione’s journey from a know-it-all student to a courageous leader. We can’t wait to see her wield a wand and tackle complex spells.

Alastair Stout as Ron Weasley

Alastair Stout, a newcomer with no major acting credits, has been cast as Ron Weasley, Harry’s loyal best friend with a knack for humor. His red hair and fresh presence make him a fitting choice to carry on the Weasley legacy, previously brought to life by Rupert Grint.

Stout’s role as Ron will highlight the character’s heart, bravery, and occasional clumsiness as he navigates life at Hogwarts alongside Harry and Hermione. With this being his first big break, Stout has a chance to make the role his own and charm audiences with Ron’s relatable spirit.

John Lithgow as Albus Dumbledore

John Lithgow, a celebrated actor with six Emmys and two Tony Awards, will portray the wise and quirky Hogwarts headmaster, Albus Dumbledore. Known for roles in ‘The Crown’ as Winston Churchill and films like ‘Conclave’ and ‘Interstellar,’ Lithgow brings a wealth of experience to this pivotal character.

Dumbledore’s blend of wisdom, humor, and mystery will be in capable hands with Lithgow, who’s no stranger to complex roles. His casting, confirmed by HBO in April 2025, has fans buzzing about how he’ll honor the legacy of Richard Harris and Michael Gambon while adding his own flair.

Janet McTeer as Minerva McGonagall

Janet McTeer, an acclaimed actress with a Tony, Golden Globe, and Oscar nomination, takes on the role of Minerva McGonagall, Hogwarts’ stern yet fair Transfiguration professor. Her credits include ‘Ozark,’ ‘The Menu,’ and ‘Tumbleweeds,’ showcasing her ability to portray strong, layered characters.

McTeer’s McGonagall will likely balance the professor’s strict demeanor with her deep loyalty to her students, a role immortalized by Maggie Smith in the films. Her commanding presence and emotional depth make her a perfect fit to lead Gryffindor House and guide young wizards.

Nick Frost as Rubeus Hagrid

Nick Frost, beloved for his comedic roles in ‘Shaun of the Dead’ and ‘Hot Fuzz,’ steps into the oversized boots of Rubeus Hagrid, Hogwarts’ warm-hearted groundskeeper. Frost’s casting brings a lighter, humorous touch to the half-giant who befriends Harry, Ron, and Hermione.

Hagrid’s love for magical creatures and his fierce loyalty to Dumbledore will shine through Frost’s natural charm and warmth. Having worked with Dominic McLaughlin in ‘Grow,’ Frost’s chemistry with the young cast could add a special spark to Hagrid’s heartfelt moments.

Paapa Essiedu as Severus Snape

Paapa Essiedu, known for his powerful performances in ‘I May Destroy You’ and ‘The Lazarus Project,’ takes on the complex role of Severus Snape, the brooding Potions master. At 34, Essiedu is younger than Alan Rickman was in the films, aligning more closely with the book’s depiction of Snape.

Snape’s layered arc, marked by his conflicted loyalties and tragic past, demands a skilled actor, and Essiedu’s Emmy-nominated work suggests he’s up to the task. His casting has stirred some debate, but his talent promises a fresh take on this iconic anti-hero.

Luke Thallon as Quirinus Quirrell

Luke Thallon, a rising star from the stage, will play Quirinus Quirrell, the stuttering Defense Against the Dark Arts professor with a dark secret. Thallon’s theater credits include an acclaimed run as Hamlet with the Royal Shakespeare Company and roles in ‘The Favourite’ and ‘Leopoldstadt.’

Quirrell’s nervous demeanor and hidden motives make him a challenging role, but Thallon’s stage-honed skills should bring nuance to this intriguing character. As a recurring role, his performance will set the tone for the series’ early mysteries at Hogwarts.

Paul Whitehouse as Argus Filch

Paul Whitehouse, a British comedy legend from ‘The Fast Show’ and ‘The Death of Stalin,’ takes on the role of Argus Filch, Hogwarts’ grumpy caretaker. His comedic background could add a lighter touch to Filch, who’s known for his disdain for students and love for his cat, Mrs. Norris.

Whitehouse’s casting as a recurring character suggests Filch will bring some humor to the series, softening the caretaker’s rough edges compared to David Bradley’s film portrayal. His experience in both comedy and drama makes him a versatile fit for this quirky role.