Fans of House of the Dragon have been curious about Alicent Hightower’s family beyond her father Otto and her children. When the question of Alicent Hightower’s brother comes up, one name stands above the rest — Ser Gwayne Hightower. With Season 3 now premiering on HBO, there has never been a better time to dive deep into who this character is, what role he plays in the Dance of the Dragons, and why his story is bigger on screen than it ever was on the page.
Who Is Alicent Hightower’s Brother?
Alicent Hightower has multiple brothers according to George R.R. Martin’s Fire & Blood, but the show has chosen to spotlight one above all others: Ser Gwayne Hightower. He is the eldest of her brothers and a knight of House Hightower from Oldtown.
In the lore, Alicent was born to Ser Otto Hightower, himself the younger brother of Lord Hightower, the Lord of the Hightower. Gwayne is described as a proud, chivalrous knight — someone who carries the Hightower name with distinction and serves his family’s political ambitions on the battlefield.
Gwayne Hightower In The Books (Fire & Blood)
In George R.R. Martin’s source novel Fire & Blood, Gwayne Hightower is a recurring but relatively minor figure. He participates in the famous Heir’s Tournament at King’s Landing, where Prince Daemon Targaryen deliberately trips his horse during the joust, injuring his face and humiliating the Hightower family in front of the entire court. The incident underscores the long-simmering rivalry between House Hightower and House Targaryen’s more defiant members.
Later in the Dance of the Dragons, Gwayne’s fate is sealed during the Fall of King’s Landing. When Rhaenyra Targaryen and the Blacks take the capital, Gwayne rushes to sound the alarm and warn the city — only to be betrayed by City Watch commander Luthor Largent, who had secretly remained loyal to Daemon Targaryen.
Gwayne Hightower In House Of The Dragon — Season 1
Gwayne makes his first appearance in Season 1 of House of the Dragon during the Heir’s Tournament. The scene faithfully captures the book moment: Daemon Targaryen selects Gwayne as his first jousting opponent, and Alicent watches with visible anxiety, biting her fingernails until Rhaenyra reaches over to calm her. Daemon then trips Gwayne’s horse, throwing him from the saddle and leaving him injured.
It is a brief but memorable moment that establishes the tension between the Hightower and Targaryen factions long before open civil war erupts.
Gwayne Hightower In House Of The Dragon — Season 2
Season 2 is where Gwayne Hightower truly comes into his own as a character on the show. Played by actor Freddie Fox, Gwayne arrives at King’s Landing from Oldtown and is formally introduced to Ser Criston Cole by Alicent herself. She insists he join Cole on his military campaign through the Crownlands — and Cole, despite his reluctance to welcome Gwayne into his inner circle, has little choice but to accept.
Their dynamic on the road proves to be one of Season 2’s unexpected highlights. Gwayne is initially portrayed as an arrogant, entitled knight — a summer soldier who hasn’t yet grasped the brutality of the war being waged. A close encounter with a dragon attack above the Crownlands quickly strips that confidence away, and Cole saves him by steering the company into nearby woodland cover. Gwayne acknowledges his debt to Cole, and the two gradually develop a more complex, layered relationship.
Meanwhile, in the Red Keep, Alicent speaks privately with Gwayne about her youngest son Daeron Targaryen — a child she has not seen in years, having sent him to be a ward of House Hightower in Oldtown. These scenes humanize Alicent in ways the show rarely allows, with Gwayne serving as her last remaining confidant as her sons increasingly push her out of power.
Alicent also asks Gwayne if he has heard anything from their father, Ser Otto — who went silent after his dismissal. Gwayne reassures her that Otto Hightower is resourceful, but his words ring hollow even to himself.
Who Plays Gwayne Hightower In House Of The Dragon?
Gwayne Hightower is portrayed by British actor Freddie Fox. Fox brings a natural charisma and dry wit to the role that fans immediately embraced. His ability to play both the arrogance of a noble-born knight and the growing moral unease of someone witnessing a brutal civil war firsthand gave the character far more depth than readers of Fire & Blood might have anticipated.
Fox is also known for his work in Slow Horses, Victor Frankenstein, and The Three Musketeers.
Gwayne Hightower In House Of The Dragon — Season 3 (2026)
House of the Dragon Season 3 premiered on June 21, 2026, on HBO and Max, and Freddie Fox is back as Ser Gwayne Hightower. The season consists of eight episodes, running through August 9, 2026.
Heading into Season 3, Gwayne remains embedded in Team Green’s military campaign. With Prince Aemond seizing increasingly harsh control of the Greens’ war effort and Alicent being systematically sidelined by her own sons, Gwayne finds himself pulled in multiple directions — loyalty to his family name, loyalty to his sister, and the grim reality of a war that is spiraling out of anyone’s control.
Season 3 also introduces Lord Ormund Hightower (played by James Norton), the head of House Hightower and Otto’s nephew — making Ormund the cousin of both Alicent and Gwayne. This brings even more Hightower family weight to the Green faction’s storyline, with a major host of Reach warriors marching under the Hightower banner.
The season currently holds a 95% approval rating on Rotten Tomatoes based on early critic reviews.
Will Gwayne Hightower Survive Beyond Season 3?
This is where things get genuinely exciting for fans of the show. In Fire & Blood, Gwayne dies during the Fall of King’s Landing — betrayed by Luthor Largent and the City Watch. But Freddie Fox has confirmed he will return for House of the Dragon Season 4, the show’s final season.
In an interview with Hello! magazine, Fox stated: “After High Society is over, I hope to do some more theatre and then do the final season of House of the Dragon.”
This confirmation strongly implies the show is deviating from the source material. Because the series moved Gwayne away from the City Watch storyline and placed him in the field alongside Criston Cole, the circumstances of any eventual death — or survival — will likely be entirely different from the books.
Key Points Summary
╔══════════════════════════════════════════════════════════╗
║ ALICENT HIGHTOWER'S BROTHER — FAST FACTS ║
╠══════════════════════════════════════════════════════════╣
║ Name │ Ser Gwayne Hightower ║
║ Portrayed By │ Freddie Fox ║
║ Relationship │ Eldest brother of Alicent Hightower ║
║ Faction │ Team Green (the Greens) ║
║ First Appears │ House of the Dragon Season 1 ║
║ Major Role │ Season 2 & Season 3 ║
║ Season 3 Air │ June 21, 2026 (HBO / Max) ║
║ Returning For │ Confirmed for Season 4 (Final Season) ║
║ Book Fate │ Dies at Fall of King's Landing ║
║ Show Fate │ Extended — expected to deviate from book ║
╚══════════════════════════════════════════════════════════╝Why Gwayne Hightower Matters To The Story
Beyond his scenes with Criston Cole, Gwayne’s most important function in House of the Dragon is as Alicent’s last true family connection. With her father Otto imprisoned and out of the picture, her son Aegon wounded and weakened, Aemond growing more dangerous and volatile by the day, and Helaena consumed by grief, Gwayne is the one person Alicent can speak to plainly. He doesn’t want anything from her. He isn’t using her. He is simply her brother.
That emotional anchor makes his storyline far more than a war subplot. It is a window into who Alicent Hightower is when the politics fall away — and that is exactly what makes the Dance of the Dragons so compelling to watch.
FAQ: Alicent Hightower Brother
Does Alicent Hightower have more than one brother? Yes. According to Fire & Blood, Alicent had several brothers. However, the show has focused almost exclusively on Gwayne as the only brother given significant screen time and storyline.
Is Gwayne Hightower on Team Green or Team Black? Gwayne is firmly aligned with Team Green — the faction supporting King Aegon II Targaryen and the Hightower family’s claim. He marches with Ser Criston Cole, one of Team Green’s primary military commanders.
What is Gwayne’s relationship with Criston Cole? The two begin as an awkward pairing — Cole does not want Gwayne foisted on him, and Gwayne’s early arrogance grates on the experienced soldier. Over time, the relationship evolves into something closer to mutual respect, born out of shared danger on the march.
Who else from House Hightower appears in Season 3? Season 3 introduces Lord Ormund Hightower (James Norton), the head of House Hightower and cousin to both Alicent and Gwayne. Otto Hightower (Rhys Ifans) also remains in the cast.
When does House of the Dragon Season 3 air? Season 3 premiered on June 21, 2026, on HBO and Max, with new episodes releasing weekly through August 9, 2026.
Whether you’re rooting for Team Green or Team Black, Gwayne Hightower is shaping up to be one of Season 3’s most compelling characters — drop your thoughts in the comments and let us know if you think he’ll survive the Dance of the Dragons!