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Warner Bros. Discovery Unveils Initial Cast for Highly Anticipated Harry Potter TV Series
After weeks of fervent speculation, Warner Bros. Discovery has formally declared the first cohort of actors who will feature in its forthcoming Harry Potter TV adaptation. These casting confirmations, centered on prominent adult figures from the beloved Harry Potter books, serve as a significant indication of progress for the wizarding world series since its initial announcement two years prior.
Leading Hogwarts Faculty Cast
The esteemed headmaster of Hogwarts, Albus Dumbledore, will be embodied by six-time Emmy Award recipient John Lithgow (The Crown, Conclave). He is joined by Paapa Essiedu (Black Mirror) as the enigmatic Severus Snape, Janet McTeer (The Menu, Kaos) as the stern Minerva McGonagall, and Nick Frost (Hot Fuzz) as the gentle giant Rubeus Hagrid.
Series Regulars and Guest Appearances
Warner Bros. has confirmed that Lithgow, Essiedu, McTeer, and Frost will all hold positions as series regulars. Additionally, Luke Thallon will make guest appearances as Quirinus Quirrell, and Paul Whitehouse will feature as Argus Filch.
Fan Reactions and Future Castings
For some enthusiasts, these casting announcements may not be entirely unexpected. Rumors regarding the involvement of these four principal actors have been actively circulating on social media platforms for several weeks. Lithgow himself confirmed his role as Dumbledore in a February interview with Deadline.
Younger Roles Yet to be Announced
The casting of younger characters, notably including the central trio of Harry, Ron, and Hermione, remains pending. Warner Bros. initiated an open casting call for these roles in the preceding fall.

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Production Team and Release Timeline
“We are thrilled to welcome such exceptional talent to the project, and we eagerly anticipate their portrayals of these cherished characters, bringing them to a fresh interpretation,” stated showrunners Francesca Gardiner (His Dark Materials) and Mark Mylod (Succession).
Multi-Year Series on HBO and MAX
This ambitious Harry Potter series is projected to span over a decade, airing on both HBO and MAX. Warner Bros. CEO David Zaslav indicated last year that the series is targeted to premiere in 2026.
Faithful Adaptation and J.K. Rowling’s Involvement
According to Warner Bros., the TV adaptation is intended to be “a true rendition of the much-loved Harry Potter book series.” Author J.K. Rowling is on board as an executive producer. The entertainment conglomerate has actively championed ventures within the Harry Potter universe, including the 2023 video game Hogwarts Legacy. This push has occurred with minimal acknowledgement of Rowling’s increasingly controversial online conduct.
Rowling’s Social Media Presence
The author has become strongly associated with promoting transphobic viewpoints on X, formerly Twitter, to the point where even Elon Musk, who shares similar views, has publicly suggested she diversify her topics of discussion on the platform.