Home » New Rebooted 'Harry Potter' HBO Series Cast Guide: Who's Who in the New Hogwarts?

New Rebooted 'Harry Potter' HBO Series Cast Guide: Who's Who in the New Hogwarts?

Here's your complete guide to who's who in this magical new world.

by Jake Laycock
8 minutes read

The magic is returning to screens in a whole new way. HBO’s highly anticipated “Harry Potter” television series promises to bring J.K. Rowling’s beloved seven-book saga to life with unprecedented depth—one season per book, allowing for richer storytelling than ever before.

After auditioning more than 32,000 children for the lead roles, the casting team has assembled an intriguing mix of fresh faces and seasoned veterans to populate the halls of Hogwarts. Here’s your complete guide to who’s who in this magical new world.

The Golden Trio

Harry Potter (Dominic McLaughlin)
Original Actor: Daniel Radcliffe

Young McLaughlin takes on the monumental task of playing the Boy Who Lived. With minimal acting experience beyond Sky’s comedy “Grow” (coincidentally starring his future Hagrid, Nick Frost), McLaughlin represents the series’ commitment to finding fresh talent rather than established child stars.

Hermione Granger (Arabella Stanton)
Original Actor: Emma Watson

Stanton brings West End experience to Hogwarts, having starred as Matilda in “Matilda: The Musical.” Her theatrical background should serve her well in embodying the brilliant, bookish witch who becomes Harry’s closest friend and moral compass.

Ron Weasley (Alastair Stout)
Original Actor: Rupert Grint

Perhaps the most striking casting choice, red-headed newcomer Stout bears an uncanny resemblance to young Rupert Grint. With zero prior acting credits, he represents the biggest gamble among the trio—and potentially the biggest reward.

The Hogwarts Faculty

Albus Dumbledore (John Lithgow)
Original Actors: Richard Harris and Michael Gambon

The veteran actor brings gravitas and warmth to Hogwarts’ beloved headmaster. Lithgow’s casting suggests a more theatrical, perhaps less physically imposing take on the character compared to his film predecessors.

Severus Snape (Paapa Essiedu)
Original Actor: Alan Rickman

Following his breakout role in “I May Destroy You,” Essiedu faces the challenging task of making Snape his own after Rickman’s iconic portrayal. His casting hints at a potentially more youthful, dynamic interpretation of the potions master.

Minerva McGonagall (Janet McTeer)
Original Actor: Maggie Smith

Oscar nominee McTeer brings considerable dramatic weight to the Transfiguration professor and head of Gryffindor House. Her casting suggests McGonagall may have more prominent storylines in this expanded format.

Rubeus Hagrid (Nick Frost)
Original Actor: Robbie Coltrane

The beloved comedian trades laughs for magical creatures as Hogwarts’ gamekeeper. Frost’s casting represents perhaps the most surprising choice, suggesting a lighter, more comedic take on the half-giant.

The Dursley Family

Petunia Dursley (Bel Powley) and Vernon Dursley (Daniel Rigby)
Original Actors: Fiona Shaw & Richard Griffiths

Known for “The Diary of a Teenage Girl” and “The Morning Show,” Powley brings nuanced dramatic skills to Harry’s bitter aunt.

Rigby, recently seen in “Renegade Nell,” takes on Harry’s bullying uncle with potential for more character development than the films allowed.

Dudley Dursley (Amos Kitson)
Original Actor: Harry Melling

In his acting debut, Kitson will portray Harry’s spoiled cousin, hopefully with more depth than the character received in earlier adaptations.

The Weasley Clan

Molly Weasley (Katherine Parkinson)
Original Actor: Julie Walters

The “IT Crowd” star brings maternal warmth to the Weasley matriarch who becomes a mother figure to Harry.

The Weasley Siblings:

  • Ginny (Gracie Cochrane) – Harry’s future love interest
  • Fred and George (Tristan and Gabriel Harland) – Real-life twins playing the mischievous Weasley twins
  • Percy (Ruari Spooner) – The ambitious, rule-following brother

Students and Adversaries

Draco Malfoy (Lox Pratt)
Original Actor: Tom Felton

Pratt, set to star in BBC’s “Lord of the Flies” adaptation, brings the perfect combination of privilege and menace to Harry’s primary school rival.

Neville Longbottom (Rory Wilmot)
Original Actor: Matthew Lewis

The clumsy but brave Gryffindor gets a fresh interpretation from Wilmot, who’s appeared in “FBI: International.”

Parvati Patil (Alessia Leoni)
Original Actor: Shefali Chowdhury

Best friend to Lavender Brown, Leoni make’s their acting debut as the twin of Padma.

Seamus Finnigan (Leo Earley)
Original Actor: Devon Murray

The loyal but initially skeptical Irish Gryffindor student will be played by Earley who’ll make’s their acting debut.

Ministry, Faculty and Beyond

Cornelius Fudge (Bertie Carvel)
Original Actor: Robert Hardy

Two-time Olivier winner Carvel brings theatrical gravitas to the Minister of Magic, promising a more complex portrayal of political corruption.

Garrick Ollivander (Anton Lesser)
Original Actor: John Hurt

“Game of Thrones” veteran Lesser takes on the mysterious wandmaker, ensuring the character’s pivotal moments receive proper attention.

Madam Hooch (Louise Brealey)
Original Actor: Zoë Wanamaker

“Sherlock” star Brealey will oversee flying lessons and Quidditch matches at Hogwarts.

Quirinus Quirrell (Luke Thallon)
Original Actor: Ian Hart

The nervous Defense Against the Dark Arts professor gets new life from comedy veteran Thallon.

Argus Filch (Paul Whitehouse)
Original Actor: David Bradley

The cranky caretaker gets a comedic twist with veteran performer Whitehouse.


With filming already underway, this fresh ensemble promises to bring new energy to familiar characters while honoring the beloved source material. The series premieres on HBO in 2026, giving fans their most comprehensive Harry Potter adaptation yet.

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