Fourth Wing TV Series Casts Esther McGregor as Violet and Emilio Sakraya as Xaden for Prime Video

After three years of book readers shouting about it, Prime Video’s Fourth Wing has finally found its two leads — and the pair Amazon landed is closer to what fans were picturing than anyone expected.

Esther McGregor will play Violet Sorrengail and Emilio Sakraya will play Xaden Riorson in the small-screen adaptation of Rebecca Yarros’ bestselling romantasy novel, Deadline and Variety both confirmed Thursday. Violet and Xaden are enemies-turned-lovers in the books, and both were considered the hardest roles in the project to cast.

The casting closes a long road. Amazon MGM Studios optioned the first book in Yarros’ Empyrean series back in 2023, but the adaptation sat in development limbo until this May, when the streamer handed it a full series order. Wednesday Season 2 executive producer Meredith Averill came aboard as showrunner and executive producer in September 2025, and Lisa Joy — who co-created Westworld — signed on to executive produce and direct the first episode.

Who Is Violet Sorrengail?

In Yarros’ book, Violet is a twenty-year-old who was always headed for a quiet life as a Scribe — a historian — following in the footsteps of her late father. Then her mother, General Lilith Sorrengail, orders her into Basgiath War College, the brutal institution that trains dragon riders for the military of Navarre. There is one rule at Basgiath: graduate or die. Riders without their dragons are as good as dead, and vice versa, which makes the bond formed on Threshing Day the most important thing in a cadet’s life.

It is a setup built for tension, and it is the reason the series has been so eagerly anticipated. Violet is physically smaller than every cadet around her, chronically ill with a connective-tissue condition that Yarros shares, and suddenly enrolled in a place where most candidates do not survive the first year. She is not chosen for her strength. She is chosen for her stubbornness.

McGregor brings a real track record to the role. She currently stars in Prime Video’s We Were Liars, adapted from E. Lockhart’s bestselling novel, and she is shooting Life Is Strange for the same streamer. Her film credits include Babygirl and Pedro Almodóvar’s The Room Next Door, and she appeared in the Disney+ series Obi-Wan Kenobi alongside her father, Ewan McGregor. She also starred with her sister Clara in the 2023 SXSW premiere Bleeding Love.

The decision to cast McGregor matters for another reason: Violet’s physical vulnerability is not a plot detail, it is the point. A lead who can sell fragility without selling weakness is a rare find, and her recent work suggests exactly that.

Who Is Xaden Riorson?

Xaden is a different problem. In the books he is a descendant of a rebellious sect of the population and a generally mysterious, brooding cadet with shadow-wielding powers — the kind of character that can read as flat menace in the wrong hands and as genuinely dangerous in the right ones. Among Fourth Wing readers, Sakraya was a top fan choice for the part, and the response to the announcement has been broadly positive.

Sakraya’s resume runs deep in German-language film and television as well as in the U.S. His credits include Rhinegold, Tribes of Europa, Warrior Nun and the Peacock series Those About to Die, along with the mixed martial arts feature Sixty Minutes. He recently wrapped work on the upcoming third season of Netflix’s One Piece, where he plays Koza, the leader of the rebel army.

That One Piece connection is worth noting for a second. Xaden has to feel like a fighter who has already survived something, and Sakraya has spent recent years doing exactly that kind of physical work on screen. He also has to carry the romance. The enemies-to-lovers arc between Violet and Xaden is the engine of the whole book, and if the chemistry does not land, the series does not work.

Why This Casting Actually Matters

Fantasy adaptations live and die on casting, and this one had a specific hazard: romantasy readers are unusually attached to specific faces. The casting process for a book like Fourth Wing is not only about finding good actors. It is about finding actors the audience can already imagine in the role.

The bigger signal here is what Amazon is willing to bet. Fourth Wing is the flagship of a YA fantasy push that includes book adaptations across Prime Video, and the company has stacked the production with heavyweight names. Michael B. Jordan’s Outlier Society is producing alongside Kilter Films, the company run by Jonathan Nolan and Lisa Joy. Rebecca Yarros herself is an executive producer, which should calm readers who have watched other adaptations wander far from their source material.

That has not always gone well for this project. Moira Walley-Beckett, who worked on Breaking Bad and Anne with an E, was originally tapped to run the show before moving on. Jac Schaeffer, the creator of Agatha All Along and WandaVision, entered discussions to helm it, and then Averill — whose most recent credit is Wednesday — was confirmed instead. Three different showrunners attached over three years is not a great sign, but the fact that the project kept its momentum and landed two leads who fit is a better one.

What the Show Has to Get Right

The biggest risk is not the casting. It is the dragons. The The Dragon Prince proved that animated dragons can carry real emotional weight, and Fourth Wing’s dragons are characters, not set dressing — they choose their riders, they have personalities, and they can turn on the people who thought they were in control. Getting that right on a television budget is a genuine technical challenge, and it is the single thing that will decide whether the series feels like a prestige fantasy or a cheap one.

The second risk is tone. The book is a romance wrapped in a war story, and it moves fast. Adapt it too seriously and it becomes generic epic fantasy. Adapt it too lightly and it loses the stakes. Averill has the Wednesday pedigree to thread that needle, and Joy’s involvement suggests the production values will not be an afterthought.

Third, there is the question of scale. The Empyrean series is planned as five books — Fourth Wing (2023), Iron Flame (2023), Onyx Storm (2025), a fourth that is still untitled, and a fifth to follow. Yarros also released a companion collection, Threshing Day, made up of thirteen short stories told from the perspective of dragon riders and focused on the moment they met their dragons. Amazon has said the plan, if the first season lands, is to adapt the rest of the novels over multiple seasons. Whether Threshing Day gets folded in is unknown.

Where Fourth Wing Sits in the Fantasy TV Landscape

Prime Video is not short on fantasy. House of the Dragon and The Wheel of Time are already on the service, and the company has been building out a slate of book adaptations aimed at a younger audience. What it has not had, until now, is a true romantasy flagship — the kind of show that travels because readers push it onto their friends.

Fourth Wing arrived in May 2023 and has never really left the conversation since. The book sold millions of copies on the strength of its own momentum rather than a marketing blitz, and its readers are loud. That is the kind of built-in audience most studios would kill for, and it is also the kind that will notice if the adaptation disappoints.

The dragon on the poster is not the hard part. The hard part is making the audience care whether Violet and Xaden survive Basgiath at all.

That is the bet Amazon just made. With McGregor and Sakraya in the leads, it is a bet that at least looks like it has a chance.

Fourth Wing has not yet set a premiere date. In the meantime, We Were Liars and Warrior Nun are both available to stream now, and One Piece returns with its third season on Netflix.

Sources: Deadline, Variety.