HBO has expanded the cast of its upcoming Harry Potter television series with three major additions for Season 2. Lenny Rush, Bonnie Hill and Billy Barratt have been cast as Dobby, Ginny Weasley and Tom Riddle respectively, as the adaptation prepares to move into the events of Harry Potter and the Chamber of Secrets.The announcement arrives even before the first season premieres. HBO's debut season, which adapts Harry Potter and the Philosopher's Stone, is scheduled to premiere on December 25, 2026. Meanwhile, preparations for the second chapter are already underway, giving fans an early look at some of the characters who will become central to Harry's second year at Hogwarts.Key HighlightsLenny Rush will portray the beloved house-elf Dobby.Bonnie Hill has been cast as Ginny Weasley for Season 2.Billy Barratt will play young Tom Riddle.Season 2 will adapt Harry Potter and the Chamber of Secrets.Bonnie Hill will take over Ginny's role from Gracie Cochrane, who appears in Season 1.Dominic McLaughlin, Arabella Stanton and Alastair Stout lead the new series as Harry, Hermione and Ron.Season 1 is scheduled to premiere on HBO on December 25, 2026.Harry Potter Season 2 Cast RevealedThe latest Harry Potter Season 2 cast announcement adds three characters who play important roles in the second book.Lenny Rush as DobbyBritish actor Lenny Rush has been selected to portray Dobby, the house-elf who becomes closely connected with Harry Potter.Dobby's introduction is one of the memorable moments from The Chamber of Secrets. In the story, he attempts to prevent Harry from returning to Hogwarts because he knows that a dangerous mystery is developing at the school.Rush is known for appearances in projects including Am I Being Unreasonable? and Dodger. He also became one of the youngest recipients of an International Emmy acting award.Bonnie Hill as Ginny WeasleyBonnie Hill will play Ginny Weasley beginning with Season 2. The role was previously assigned to Gracie Cochrane for the first season, but Cochrane will not continue in later seasons after stepping away from the series due to unforeseen circumstances.Ginny becomes considerably more important in The Chamber of Secrets, making her casting particularly significant for the second season.Hill joins the Weasley family already represented in the series by Alastair Stout as Ron, along with actors playing Molly, Fred, George and Percy Weasley.Billy Barratt as Tom RiddleBilly Barratt has been cast as Tom Riddle, the young wizard whose history is central to the mystery surrounding the Chamber of Secrets.Barratt is known for Invasion and Bring Her Back. He also made history as the youngest winner of the International Emmy Award for Best Actor for his performance in Responsible Child.The casting is particularly interesting because Tom Riddle is an important connection between Hogwarts' past and the dark events unfolding in the second story.Who Plays Harry, Ron and Hermione?The main trio for HBO's new adaptation consists of:Dominic McLaughlin as Harry PotterArabella Stanton as Hermione GrangerAlastair Stout as Ron WeasleyThe supporting ensemble includes John Lithgow as Albus Dumbledore, Janet McTeer as Minerva McGonagall, Paapa Essiedu as Severus Snape, Nick Frost as Rubeus Hagrid, Rory Wilmot as Neville Longbottom and Lox Pratt as Draco Malfoy.The series is being developed as a long-form adaptation of J.K. Rowling's seven-book series, with each season expected to focus on one book.Harry Potter Season 2 and Chamber of SecretsSeason 2 will move the story beyond Harry's first year at Hogwarts and into Harry Potter and the Chamber of Secrets.The story introduces several important elements, including the mystery surrounding the Chamber, the history of Tom Riddle and the arrival of Dobby. Ginny Weasley's expanded role also makes the second instalment a major chapter in the overall Harry Potter story.The television format gives HBO more room to explore the books compared with the original film adaptations.Who Is Making the Harry Potter Series?The series is written and executive produced by Francesca Gardiner, while Mark Mylod serves as an executive producer and is directing multiple episodes.The production is being handled by HBO in association with Brontë Film and TV and Warner Bros. Television. J.K. Rowling is also among the executive producers.Harry Potter Season 1 Release DateWhile Season 2 casting has already begun, audiences still have to wait for the first season.Harry Potter Season 1 is scheduled to premiere on December 25, 2026, with the first season adapting Harry Potter and the Philosopher's Stone. HBO released a new trailer on September 2, giving fans a closer look at Dominic McLaughlin's Harry Potter and the new Hogwarts ensemble.TimelineSeptember 2, 2026: HBO released a new trailer for the first season of the Harry Potter series.September 4, 2026: HBO announced Lenny Rush, Bonnie Hill and Billy Barratt for Season 2 as Dobby, Ginny Weasley and Tom Riddle.December 25, 2026: Season 1 is scheduled to premiere on HBO.Season 2: The second season will adapt Harry Potter and the Chamber of Secrets, with filming planned for later in 2026.Latest UpdateThe latest Harry Potter Season 2 cast announcement has confirmed three highly anticipated roles. Lenny Rush will bring Dobby to the screen, Bonnie Hill will portray Ginny Weasley, and Billy Barratt will play Tom Riddle.With Season 1 still months away from its premiere, HBO is already building the next chapter of its Wizarding World adaptation. The casting of Dobby, Ginny and Tom Riddle gives fans an early indication of how the series will approach The Chamber of Secrets.
