A Knight of the Seven Kingdoms cast: Full list of stars in Game of Thrones spin-off

Another chapter in the Game of Thrones mythos is about to unfurl on the small screen, as A Knight of the Seven Kingdoms introduces viewers to two much-loved characters from the works of George RR Martin.

Ser Duncan the Tall (played by Peter Claffey) and his squire Egg (Dexter Sol Ansell) are the subject of three novellas by Martin, which serve as the basis for this latest spin-off.

The first season of the show, with a second run already confirmed, is based on the first novella from George RR Martin, titled The Hedge Knight.

Fans of the franchise can expect to see the lighter side of life in Westeros, with the Tales of Dunk and Egg breaking away from the ruthless scheming and gut-wrenching betrayals that characterise earlier adaptations.

That isn't to say that there won't be formidable villains or a fair share of brutal moments; however, True Detective: Night Country breakout star Finn Bennett is cast as the particularly loathsome Prince Aerion Targaryen in the new series.

House Targaryen also puts in further appearances, too, with the additions of Aerion's father, Prince Maekar Targaryen, and uncle, Crown Prince Baelor Targaryen, the heir to the Iron Throne.

If you're as excited as we are, read on for your introduction to A Knight of the Seven Kingdoms' cast, ahead of the show's premiere on Sky Atlantic and NOW from 18th/19th January 2026.

A Knight of the Seven Kingdoms cast: Full list of stars in Game of Thrones spin-off

Here's an overview of the confirmed cast members in A Knight of the Seven Kingdoms – read on for more detailed profiles on each character and the actor playing them, including where you might have seen them before.

• Peter Claffey as Ser Duncan the Tall/'Dunk'
• Dexter Sol Ansell as Egg
• Finn Bennett as Prince Aerion Targaryen
• Bertie Carvel as Crown Prince Baelor 'Breakspear' Targaryen
• Tanzyn Crawford as Tanselle
• Daniel Ings as Ser Lyonel Baratheon
• Sam Spruell as Prince Maekar Targaryen
• Edward Ashley as Ser Steffon Fossoway
• Youssef Kerkour as Steely Pate
• Daniel Monks as Ser Manfred Dondarrion
• Shaun Thomas as Raymun Fossoway
• Tom Vaughan-Lawlor as Plummer
• Danny Webb as Ser Arlan of Pennytree
• Henry Ashton plays TBC

Peter Claffey plays Ser Duncan the Tall AKA 'Dunk'

Who is Ser Duncan the Tall? A hedge knight of humble origins, Duncan sets off to do his late master, Ser Arlan of Pennytree, proud and finds himself entering the Ashfour tourney.

However, Duncan soon ends up drawn into further drama and also acquires a precocious squire of his own.

Where else have you seen Peter Claffey? An Irish actor and former professional rugby player, Claffey has starred in Bad Sisters, as Cormac Kelly in Wreck, and as Dunstan in Vikings: Valhalla.

Dexter Sol Ansell plays Egg

Who is Egg? A resourceful and precocious young boy who becomes the trusted squire of Ser Duncan the Tall.

In a recent interview with Radio Times, showrunner Ira Parker revealed that Ansell was the first person he saw for the role of Egg – and he was instantly fighting for him to be cast.

"I watched his audition, and was just like, 'This is perfect. This is easy. This is the guy'," he recalled. "I told that to our casting director, and she's just like, 'Hold on one second here! Let's see some other people first before we pull the trigger'."

Parker added, "He's the best child actor on planet Earth. It feels unfair to call him a child actor; he's professional; he can riff; he takes notes; he's very thoughtful in his process... I think he's going to be very successful in whatever he chooses to do in his life."

Where else have you seen Dexter Sol Ansell? Ansell previously played Lucas Taylor in Emmerdale, starred as David Saunders in The Midwich Cuckoos, Finlay in Hullraisers, and portrayed a young Coriolanus Snow in The Hunger Games: The Ballad of Songbirds & Snakes.

Finn Bennett as Prince Aerion 'Brightflame' Targaryen

Who is Prince Aerion Targaryen? Prince Aerion is notorious as one of the most sadistic and villainous members of the Targaryen family. Aerion is the son of Prince Maekar Targaryen, the younger brother of the heir to the throne, Crown Prince Baelor Targaryen.

On how he identified with his nasty new character, Bennett told Radio Times and others: "I think actually it's sadly easy – it's his need to impress. I think he feels a responsibility or duty to be impressive, and maybe that's something [we] share its actors."

Where else have you seen Finn Bennett? The Irish-British actor is best known for his role in True Detective: Night Country, but has also starred in Liar, Kiri and Domina.

Bertie Carvel as Crown Prince Baelor 'Breakspear' Targaryen

Who is Crown Prince Baelor 'Breakspear' Targaryen? The heir to the Iron Throne, the Prince of Dragonstone, and the Hand of the King to his father King Daeron II Targaryen.

Known for his skill as a warrior and merciful nature, named after Baelor the Blessed, Baelor is also nicknamed 'Breakspear'. Baelor is the paternal uncle of Prince Aerion.

On his character, Carvel explained to Radio Times and other press: "I think that he's a realist and a pragmatist and knows that to be good in a world that does not value kindness is a very, very difficult thing. It's an unstable world. It's very like our world. I mean, if I knew I was going to become the head of state one day... oh God, you'd never sleep, would you? So he has the weight of the world on his shoulders."

Where else have you seen Bertie Carvel? The Tony Award-winning thespian is known for his work on the stage, but also starred in Jonathan Strange & Norell, Doctor Foster, Dalgleish, The Sister, and recently played Tony Blair in The Crown.

Tanzyn Crawford as Tanselle

Who is Tanselle? Tanselle is a puppeteer from Dorne who encounters Dunk and Egg on their adventures - and is a potential love interest for Dunk.

On joining the Game of Thrones universe, Crawford told Radio Times and others, "I feel like I had quite free rein with Tanselle, because there's not a lot of information about her that delves into her personality.

"So I got to kind of create what I saw on the page... She's obviously a very creative person, and I admire that in somebody. I feel like I'm that myself. I loved that she has a small kind of confidence, rather than something large."

Where else have you seen Tanzyn Crawford? The Australian actor has also starred in Servant, Tiny Beautiful Things and Swift Street.

Daniel Ings plays Ser Lyonel Baratheon

Who is Ser Lyonel Baratheon? A tall, swaggering warrior, Ser Lyonel Baratheon is the heir to the Baratheon ancestral seat of Storm's End and is known as 'The Laughing Storm'.

On his role, Ings told Radio Times and other press: "He's called the Laughing Storm because of his habit of laughing on the battlefield, which is a pretty dark thing to contemplate – somebody who finds joy in violence and death.

"In that sense, [I was] offered an opportunity to try and play with light and shade, and just push the parameters and see if I find... where are the boundaries of what we can get away with?"

Where else have you seen Daniel Ings? The English actor is best known for his work in Psychoville, Lovesick, The Crown, Instinct, The English Game, I Hate Suzie, Sex Education, The Gold, and the Netflix series The Gentlemen.

Sam Spruell plays Prince Maekar Targaryen

Who is Prince Maekar Targaryen? The Prince of Summerhall, Maekar, is the younger brother of Crown Prince Baelor and is the father of Prince Aerion. A stern and strict figure, Maekar is known for being unforgiving and is not the kindest father in Westeros.

Spruell told Radio Times and other press: "I felt very lucky to be playing the less successful brother, the brother who was second in line to the throne, who was less loved by his mother, who was not a good father... I really enjoyed kind of exploring Maekar's failure as a prince, as a father, and as a human. And those are always the really interesting characters to play."

Where else have you seen Sam Sprurell? The British actor is best known for his villainous roles, appearing in films such as To Kill a King, London to Brighton, The Hurt Locker and Legend, along with television roles including Spooks, Mayday, Luther, Doctor Who and Fargo season 5.

Edward Ashley as Ser Steffon Fossoway

Who is Ser Steffon Fossoway? An anointed knight who is competing in the Ahsford tourney and crosses paths with Dunk and Egg.

What else has Edward Ashley been in? You might recognise him from historical dramas including In The Heart of the Sea, The Lost City of Z, The King and, most recently, Masters of the Air. He also played William in Sally Wainwright's Last Tango in Halifax.

Youssef Kerkour as Steely Pate

Who is Steely Pate? A blacksmith who Dunk encounters once he arrives in Ashford for the tourney. Could Steely Pate be a good ally?

What else has Youssef Kerkour been in? Since his breakout role in Channel 4's Home, Kerkour has gone on to appear in Baghdad Central, Worzel Gummidge, Stay Close, Man Like Mobeen and Significant Other. His film projects include Ridley Scott productions House of Gucci and Napoleon.

Daniel Monks as Ser Manfred Dondarrion

Who is Ser Manfred Dondarrion? A knight who Dunk hopes to find an ally in when he arrives at Ashford.

What else has Daniel Monks been in? Monks has recently appeared in the mystery series Dead Hot and the John Cena/Zac Efron comedy film Ricky Stanicky.

Shaun Thomas as Raymun Fossoway

Who is Raymun Fossoway? The cousin and squire of Ser Steffon, Raymun, becomes a friend and ally to Dunk after he arrives in Ashford.

Teasing his role, Thomas told Radio Times and other press: "I really like Raymun's light-heartedness and his ability to stand up for what's right when he needs to. It didn't take me too long to understand him... He's got a great level of like humanity in him."

What else has Shaun Thomas been in? Thomas played Gerry Roberts for a stint on Emmerdale between 2017 and 2019. He went on to roles in BBC Three comedy Ladhood, true crime drama Four Lives and acclaimed indie film How to Have Sex. Most recently, he appeared in ITV's The Long Shadow.

Tom Vaughan-Lawlor as Plummer

Who is Plummer? The Steward of Ashford, who also acts as Master of the Games during a local tourney.

What else has Tom Vaughan-Lawlor been in? Vaughan-Lawlor provided the voice and motion capture for Marvel villain Ebony Maw in Avengers: Infinity War, Endgame and animated series What If...?. He is also known for Dublin Murders, The Ipcress Files and The Beautiful Game.

Danny Webb as Ser Arlan of Pennytree

Who is Ser Arlan of Pennytree? The hedge knight for whom Dunk was a squire and who he is mourning throughout the series.

What else has Danny Webb been in? Webb's career dates back decades, but recent work includes HBO's The Regime, BBC One's Beyond Paradise and The Trial of Christine Keeler. He appeared in Doctor Who's terrifying two-parter The Impossible Planet and The Satan Pit.

Henry Ashton plays TBC

What else has Henry Ashton been in? Ashton has had a busy year, taking roles in both My Lady Jane and A Good Girl's Guide to Murder. Previously, he had appeared in Outlander as Sandy Hammond.

A Knight of the Seven Kingdoms premieres on Sky Atlantic and NOW on Monday 19th January 2026 – find out more about how to sign up for Sky TV.

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