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HBO’s ‘Harry Potter’ Series Puts Its New Golden Trio Front and Center in Magical Character Posters

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HBO’s ‘Harry Potter’ series is just weeks away, and the marketing is now in full swing. The new adaptation of J.K. Rowling’s books will cover one book per season, starting with ‘Harry Potter and the Philosopher’s Stone’, with the series using the original UK title rather than the American one.

HBO has been steadily building anticipation over the past few months. The network released the first trailer in March, followed by more teasers, and in late October it unveiled the show’s first official poster, featuring Hogwarts Castle reflected in Harry’s round glasses alongside the tagline “The Boy Who Lived.”

Now the young stars are getting their own spotlight. HBO has released new character posters for Dominic McLaughlin as Harry Potter, Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley, confirming that the series premieres this Christmas.

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The 3 posters share a matching design. Each young actor stands in their Hogwarts uniform in a warm, book-lined library, holding a wand upright through the center of the frame.

All of them carry the tagline “The First Year Begins,” along with HBO Original branding and the December 25 premiere date. The season will debut on HBO, with streaming on HBO Max in supported markets.

HBO announced its lead trio in May 2025 after a huge open casting call that drew tens of thousands of young hopefuls. The 3 actors are largely newcomers, just as Daniel Radcliffe, Emma Watson and Rupert Grint were when the films launched them to fame.

McLaughlin previously appeared in the Sky comedy ‘Grow’, starring Nick Frost. Stanton is the most experienced of the 3, having played the title role in ‘Matilda the Musical’ on the West End from 2023 to 2024. For Stout, the series marks his first major role. Now he’ll be one of the faces of one of HBO’s biggest productions.

The young trio is backed by a strong ensemble. John Lithgow plays Albus Dumbledore, Janet McTeer is Minerva McGonagall, Paapa Essiedu takes on Severus Snape, and Nick Frost plays Rubeus Hagrid.

The cast also includes Luke Thallon as Quirinus Quirrell, Paul Whitehouse as Argus Filch, Lox Pratt as Draco Malfoy and Bel Powley as Petunia Dursley. In a nod to the films, Warwick Davis is returning as Filius Flitwick.

The series is written and executive produced by showrunner Francesca Gardiner, known for ‘Succession’ and ‘Killing Eve’. Mark Mylod, another ‘Succession’ veteran who also worked on ‘Game of Thrones’, directs several episodes and serves as an executive producer.

Rowling also executive produces, along with Neil Blair, Ruth Kenley-Letts and David Heyman. Hans Zimmer is composing the score, and the show was filmed at Warner Bros. Studios Leavesden in the UK. The first season will run for 8 episodes. Reports indicate that Rowling has already read the first 2 episodes and shared her enthusiasm for them.

HBO is clearly in this for the long haul. The network renewed the series in May 2026 for a second season, which will adapt ‘Harry Potter and the Chamber of Secrets’, with Jon Brown joining Gardiner as co-showrunner.

The plan is to adapt each of Rowling’s 7 novels as its own season, with the final season expected to arrive around 2037. That means fans could be watching McLaughlin, Stanton and Stout grow up on screen over the next decade.

With the character posters released and the premiere date locked in, the countdown to returning to Hogwarts is on. The real test will be how audiences connect with this new trio when the first episode arrives on Christmas Day.

What do you think of HBO’s new Golden Trio for the ‘Harry Potter’ series?

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