Harry Potter TV Series: Know Everything About Arabella Stanton, Alastair Stout, and Dominic McLaughlin

HBO has officially unveiled its Golden Trio for the upcoming Harry Potter TV series, casting three young actors in the iconic roles of Harry, Hermione, and Ron. Dominic McLaughlin takes on the mantle of the Boy Who Lived (Harry Potter), with Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley. Here’s everything we know about the Harry Potter cast of the HBO show bringing Harry, Hermione, and Ron to life for a new generation of fans.

Who is the new Harry Potter, Dominic McLaughlin?

Dominic McLaughlin is a rising talent and one of the most talked-about names following his casting as Harry Potter. Though a newcomer to the screen, he has already worked on the Sky Original film Grow and is set to appear in the BBC series Gifted, both releasing later this year.

Who is the new Hermione Granger, Arabella Stanton?

Arabella Stanton is no stranger to the spotlight. She starred as Matilda in Matilda: The Musical on London’s West End from 2023 to 2024 and also appeared in Starlight Express as the narrator Control at Wembley Park Theatre in Wembley, England. Her theatre background is expected to bring poise and energy to the character of Hermione Granger.

Who is the new Ron Weasley, Alastair Stout?

Alastair Stout steps into his first major acting role with Ron Weasley. With no previous credits beyond a potato advertisement, his casting mirrors Rupert Grint’s own humble beginnings. HBO's bet on fresh talent signals their intention to recapture the original magic.

How were they Chosen?

After what producers Francesca Gardiner and Mark Mylod called an “extraordinary search,” the three young actors were chosen from tens of thousands of auditioning children. 

“The talent of these three unique actors is wonderful to behold, and we cannot wait for the world to witness their magic together onscreen,” said Gardiner and Mylod. “We would like to thank all the tens of thousands of children who auditioned. It’s been a real pleasure to discover the plethora of young talent out there,” they added (via Variety).

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Rest of the Cast we know so far

While the main trio has just been revealed, HBO has already announced an impressive supporting cast. Here's who we know so far:

• John Lithgow as Albus Dumbledore
• Janet McTeer as Minerva McGonagall
• Paapa Essiedu as Severus Snape
• Nick Frost as Rubeus Hagrid
• Luke Thallon as Professor Quirinus Quirrell
• Paul Whitehouse as Argus Filch

The role of Voldemort has not yet been cast. However, Ralph Fiennes, who portrayed the dark lord in the original films, has expressed interest in Cillian Murphy taking up the mantle next (via USA Today).

What we know About the Harry Potter Series so far

HBO’s Harry Potter series will be a faithful re-adaptation of J.K. Rowling’s original books, with Rowling herself serving as an executive producer alongside Neil Blair, Ruth Kenley-Letts, and Harry Potter film producer David Heyman. Showrunner Francesca Gardiner and director Mark Mylod are leading the creative team.  The production is backed by HBO, Warner Bros. Television, and Brontë Film and TV.

Rowling commented on the adaptation when it was first announced in 2023 (via Deadline): “HBO Max's commitment to preserving the integrity of my books is important to me. I’m looking forward to being part of this new adaptation which will allow for a degree of depth and detail only afforded by a long form television series.”

The show is expected to explore each book in greater depth than the films allowed, promising a more immersive storytelling experience. Production begins this summer at Warner Bros. Studios Leavesden. HBO CEO Casey Bloys recently confirmed to Deadline that the show will likely premiere in late 2026 or early 2027.

Controversy and Creative Control

Rowling’s involvement has sparked debate due to her views on transgender issues. Addressing the backlash, HBO content chief Casey Bloys said on The Town podcast (via Variety): “It’s pretty clear that those are her personal, political views. She’s entitled to them. Harry Potter is not secretly being infused with anything. And if you want to debate her, you can go on Twitter.”

With a talented new cast and a production team promising to stay faithful to the books, HBO’s Harry Potter series is shaping up to be a magical reboot. Whether you're a longtime fan or a newcomer, this fresh take on the Wizarding World is sure to cast a powerful spell when it finally arrives.