Harry Potter TV series needs the following elements to be successful

HBO's Harry Potter reboot is slated to premiere in 2026. Casting is currently underway. Rumors of new actors joining the Wizarding World have sparked excitement about Harry Potter TV. Of course, the show will need more than just enthusiasm and a Warner Bros. connection to succeed. While Harry Potter is one of the biggest fantasy franchises out there, its popularity has waned over time. And the failure of the Fantastic Beasts films is proof that Harry Potter TV needs more than just name recognition to make its mark.

Fortunately, even with the harsh realities of remaking Harry Potter, there are ways HBO can ensure its success. Stay true to the source material and get the key elements of the book story right. From the casting to the depiction of Hogwarts, there are aspects of Harry Potter TV that can make or break its success. If the creators of Harry Potter TV can get those things right, it has a chance at success.

Factors that made the TV version of Harry Potter successful

• Harry Potter TV needs an impressive cast
• Harry Potter TV needs to stay true to the original and only expand on what the fans want
• Harry Potter TV needs both old and new elements
• Harry Potter TV needs to handle action well
• Harry Potter TV needs to clearly show the light and dark parts 

Harry Potter TV needs an impressive cast

There's a reason the Harry Potter remake's cast is such a hot topic: it's one of the most important elements. Part of that is because the Harry Potter film cast is so iconic that it's hard to imagine the characters being played by anyone else. But the story is also incredibly character-driven, so having talented actors on board ensures that the transition from page to screen is seamless.

John Lithgow is currently the only confirmed cast member for the Harry Potter TV series—and while an American Dumbledore is a bit of a surprise, it's certainly a strong start. Other announced frontrunners, like Janet McTeer as McGonagall and Paapa Essiedu as Snape, also promise big things. But getting the Golden Trio right will be the most important task. Hopefully, HBO's remake will get that right.

Harry Potter TV needs to stay true to the original and only expand on what the fans want

It probably goes without saying, but the biggest measure of the success of the Harry Potter films will be how they handle the source material. The previous films have done a good job of bringing the books to life, but they've left out a lot of plot, character details, and battles from the original. These are the things viewers would hope to see in a remake, which has a better chance of being more faithful to the Harry Potter books than previous adaptations — especially now that it's going to have the runtime of a TV show.

Having more space to tell the story of the wizarding world also means that HBO's remake can expand on certain storylines from the books, although it will need to do so carefully. There are certainly stories that readers will want to know more about; the backstory of the Marauders and the creation of Voldemort's Horcruxes… But approaching these parts of the source material carefully is crucial to the success of the Harry Potter films, as any deviations that go too far could upset loyal fans.

Harry Potter TV needs both old and new elements

All book-to-screen adaptations have to balance faithfulness to the source material, but the Harry Potter show has another balancing act to get right. The remake will need to recreate what audiences loved about the old films — especially if it's looking for similar success — but it also needs to differentiate itself from other adaptations. The Harry Potter TV show can't be too similar or too different. And even if it gets that right, one of the harshest realities a Harry Potter remake will face is that it will still be compared to the previous films.

Being faithful to the source material is one way the upcoming Harry Potter TV series can stand out, but there are other ways. Some, like improving the action and casting more diverse actors, will be enough to make it a success. But it can't go too far, or it will feel too different from the Wizarding World to be worth the public's attention.

Harry Potter TV needs to handle action well

Game of Thrones and House of the Dragon are proof that HBO's budget can produce great action, and that could be a selling point for a Harry Potter reboot. The later books in the series have some great action scenes, and the movies haven't always been able to deliver that. The remake could and should fix that, improving everything from the Battle of the Astronomy Tower to Voldemort and Harry's final battle at Hogwarts.

Getting it right would help elevate the upcoming Harry Potter TV show and cement its legacy in the fantasy television genre. Additionally, it would help the remake stand out from the films and successfully adapt the books, making it an undeniable favorite.

Harry Potter TV needs to clearly show the light and dark parts

It's not just the events of the original source material that the upcoming Harry Potter show has to get right; it's the "soul" of the books, which requires a different balancing act. The originals managed to be lighthearted and quirky in their depiction of the wizarding world while maintaining a high level of surprise, and they also handled the good and evil sides of this fantasy world well. HBO's remake will have to do the same if it wants to live up to the success of the books and films.