Kit Harington is heading from Westeros to Hogwarts. The Game of Thrones star has been cast as Gilderoy Lockhart in Season 2 of HBO's upcoming Harry Potter series, replacing Nicholas Hoult, who has exited the project because of scheduling conflicts. The recasting was reported by Deadline and confirmed by multiple entertainment outlets.

Harington will play the famously vain Defence Against the Dark Arts professor in the season based on Harry Potter and the Chamber of Secrets, the second book in J.K. Rowling's series. Season 2 is expected to begin production this autumn.

The casting is particularly interesting because Harington already has a connection with the character. He previously voiced Gilderoy Lockhart in the full-cast audio adaptation of Harry Potter and the Chamber of Secrets. Speaking about the role previously, Harington said his love for the books made accepting the character an easy decision.

Why Did Nicholas Hoult Leave?

Hoult had been announced for the role of Lockhart earlier this month, but his time in the Harry Potter series lasted only briefly. He has now departed the production because of scheduling conflicts involving his other commitments.

The change comes before filming on the second season gets underway, allowing HBO to recast the role ahead of Lockhart's appearance in the adaptation of Chamber of Secrets.

For Harington, the role represents a very different character from Jon Snow, the brooding hero he played for eight seasons in Game of Thrones. Lockhart, by contrast, is known for his flamboyant personality, exaggerated confidence and obsession with his own reputation.

From Jon Snow to Gilderoy Lockhart

Harington's casting creates an unusual crossover for HBO viewers. He became internationally famous as Jon Snow in Game of Thrones, one of HBO's biggest fantasy franchises, and will now appear in another major fantasy property from the network.

The actor's previous experience voicing Lockhart could also make the transition particularly interesting for fans. Unlike the audiobook performance, the HBO series will give Harington the opportunity to physically portray the character and develop Lockhart's personality on screen.

When Will Harry Potter Season 2 Arrive?

The new HBO Harry Potter series has not yet premiered. Season 1 is scheduled to debut on HBO and HBO Max on December 25, 2026, with the first season adapting Harry Potter and the Philosopher's Stone.

The second season will move the story to Chamber of Secrets, bringing Lockhart into the Hogwarts storyline alongside the new versions of Harry Potter, Ron Weasley and Hermione Granger.

The series stars Dominic McLaughlin as Harry Potter, Alastair Stout as Ron Weasley and Arabella Stanton as Hermione Granger, with John Lithgow playing Albus Dumbledore and Janet McTeer as Minerva McGonagall.

With Harington now officially attached to Season 2, the casting has added another major name to HBO's long-planned return to the Wizarding World.