Gary Oldman knows better than most what the Harry Potter movies had to leave behind. The actor, who played Sirius Black across four films in the franchise, believes HBO’s upcoming television adaptation could give viewers a more complete version of J.K. Rowling’s books. The reason is simple: a television series has considerably more room to explore characters and storylines that the movies had to compress. For Oldman, that extra space could make the new Harry Potter adaptation more satisfying for longtime readers and viewers.
Speaking to Entertainment Weekly, Oldman pointed to the limitations faced by the original movies, which had to condense Rowling’s increasingly lengthy books into feature-length productions. He explained that even after cutting substantial material, the films could still run close to three hours. That meant entire pieces of character development and smaller story details had to disappear along the way. HBO’s episodic format could give those moments considerably more breathing room.
Why Gary Oldman Thinks HBO’s Harry Potter Could Work
Oldman was particularly clear about how much the movies had to sacrifice when adapting the books. “We had to cut a lot [for the ‘Harry Potter’ movies], and still we could only get the films down to, like, three hours,” Oldman said. He added that “a lot of character detail was sacrificed” in the process. Looking ahead to the HBO series, he said, “I believe [the HBO series is] gonna do it pretty much word-for-word, which I think, as a viewer, would be more satisfying.”
That observation carries some weight coming from an actor who experienced those adaptations from inside the franchise. Sirius Black was one of the characters whose story changed significantly when Rowling’s books were translated to the big screen. While Oldman appeared in four Harry Potter films, Sirius’ role was uneven across the series, with his character receiving substantially more attention in some installments than others. The HBO format could potentially give the character and his complicated history the kind of space that a feature film could not always afford.
Oldman has previously been outspoken about Sirius receiving too little screen time. In a 2024 interview with IndieWire, he said, “He wasn’t in it enough. He turned up and then he went through the veil.” Sirius first appeared in Harry Potter and the Prisoner of Azkaban, which introduced one of the story’s most important connections to Harry’s family history. He later appeared in Goblet of Fire, Order of the Phoenix and Deathly Hallows Part 2, although his appearances varied considerably before his death in the fifth book and film adaptation.
Oldman Remains Proud Of The Harry Potter Films
Despite his criticism of what had to be removed, Oldman isn’t dismissive of the movies that made the franchise a global phenomenon. He told EW that he remains “proud” and “grateful” to have been part of the films, particularly because of the extraordinary scale of the phenomenon they became. For an actor looking back at one of the most recognizable fantasy franchises in modern cinema, there is clearly a difference between acknowledging an adaptation’s limitations and regretting being part of it. Oldman’s comments make that distinction particularly clear.
He also credited director Chris Columbus for helping establish the cinematic version of the Wizarding World. Oldman noted that Columbus “set the world up and cast it,” highlighting the importance of the choices made during the earliest stages of the franchise. The original cast then returned movie after movie as their characters and performances evolved alongside them. That continuity became one of the defining features of the eight-film series.
Oldman previously described his own Sirius Black performance as “mediocre,” but later clarified what he meant by the comment. He explained that his criticism was directed at his own work rather than the Harry Potter films, their fans or the character himself. “What I meant by that is, as any artist or any actor or painter, you are always hypercritical of your own work,” he told Variety in 2024. He added, “If you’re not, and you are satisfied with what you’re doing, that would be death to me.”
HBO’s Harry Potter Series Moves Forward
The new Harry Potter series is now moving into its next phase, with Season 1 having wrapped production ahead of its planned December 25 premiere on HBO and HBO Max. The second season is already in pre-production at Leavesden Studios outside London and will adapt the second book in Rowling’s series. That schedule suggests HBO is treating the project as a long-term television franchise rather than a one-off remake. Each season is expected to have more room to focus on the corresponding book.
Dominic McLaughlin leads the new series as Harry Potter, with Arabella Stanton playing Hermione Granger and Alastair Stout portraying Ron Weasley. The ensemble also 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. HBO has not announced its Sirius Black casting at this point. That makes the eventual choice especially interesting given how closely Oldman’s version of the character is associated with the original films.
The challenge for HBO will not simply be adding more scenes from the books. The series has to make those additional details feel meaningful rather than turning the adaptation into a scene-by-scene checklist. More material can give characters greater depth, but it also needs strong performances and pacing to keep viewers invested. If the writers can use the longer format to build relationships and emotional moments that the films had to rush, Oldman’s prediction could prove particularly relevant.
What Gary Oldman’s Comments Mean For The New Series
The most interesting part of Oldman’s assessment is that he isn’t arguing the original movies failed. Instead, he is pointing to the fundamental difference between adapting a large fantasy novel into a two-and-a-half-hour film and adapting the same story for episodic television. The films had to constantly decide what could stay and what had to go, especially as Rowling’s books became longer and more complicated. HBO now has an opportunity to let individual characters occupy the story for longer periods.
That could be particularly valuable for supporting characters whose book arcs were reduced on screen. Sirius Black is an obvious example, but he is far from the only character who could benefit from additional narrative space. Relationships, school life, family histories and smaller plotlines can all receive more attention when an adaptation is not racing toward a theatrical runtime. For readers who remember those details from the books, that may ultimately be the biggest reason to give the new series a chance.
Oldman’s own history with the franchise adds another layer to the discussion. He remains grateful for the films and the people who built them, while also recognizing that the format inevitably forced difficult compromises. HBO’s series now gets to approach the same material with a very different storytelling structure. Whether it becomes the definitive screen version of Rowling’s books will take time to determine, but the possibility of a more expansive adaptation is already one of its biggest selling points.
Harry Potter HBO Series: 6 Key Questions
Why does Gary Oldman think HBO’s Harry Potter could be better?
Oldman believes the HBO series can include much more of J.K. Rowling’s original material than the films could. He specifically pointed to character details that had to be removed from the movies.
Who did Gary Oldman play in Harry Potter?
Gary Oldman played Sirius Black, Harry Potter’s godfather, in four movies in the original film series.
Why did Sirius Black have limited screen time?
The films had to condense Rowling’s books into feature-length movies, meaning many character moments and story details could not be included. Oldman has previously said he felt Sirius “wasn’t in it enough.”
When will HBO’s Harry Potter series premiere?
Season 1 of HBO’s Harry Potter series is scheduled to premiere on HBO and HBO Max on December 25.
Who plays Harry Potter in the HBO series?
Dominic McLaughlin plays Harry Potter in the upcoming HBO adaptation, alongside Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley.
Has HBO cast Sirius Black yet?
HBO has not announced the actor who will play Sirius Black in the television series at this point.
