Get ready to step back into the captivating world of Westeros, as “A Knight of the Seven Kingdoms” is set to grace our screens in 2026. This prequel offers fans a fresh look at George R.R. Martin’s universe, providing a character-focused narrative that delves deeper into relationships and emotions, steering away from the blood-soaked drama of “Game of Thrones” and “House of the Dragon.” If you’re as excited as I am to follow the journey of Duncan the Tall and his squire Egg, you’ll want to know more about the cast and characters shaping this epic tale.
1. Peter Claffey as Ser Duncan the Tall

Meet Ser Duncan the Tall, the series’ lead character whose journey begins in the alleys of Flea Bottom. As a young boy, Duncan becomes a squire under Ser Arlan of Pennytree. Their travels across Westeros take a dark turn at a tournament in Ashford, where tragedy strikes, prompting Dunk to become a hedge knight to honor his mentor. Peter Claffey, a rising Irish actor, steps into this pivotal role, and his portrayal is bound to bring Duncan’s incredible journey to life.
2. Dexter Sol Ansell as Prince Aegon Targaryen

Prince Aegon, affectionately called ‘Egg,’ is another focal figure in the series. Aegon, the fourth son of Maekar Targaryen, finds himself thrust into a curious situation at the Ashford tourney. Mistaken for a stable boy due to a prank by his brother, Dunk’s humility draws Egg to him. Dexter Sol Ansell, known for his role in The Hunger Games: The Ballad of Songbirds & Snakes, brings this charming character to life.
3. Finn Bennett as Prince Aerion “Brightflame” Targaryen

Prince Aerion, known as “Brightflame,” has a shadowy reputation. Unlike his kind-hearted brother Aegon, Aerion’s arrogance runs deep, as he believes he embodies the nature of dragons. Often tormenting Aegon, he exemplifies the darker aspects of the royal family. Finn Bennett, who has impressed audiences in True Detective: Night Country and Domina, steps into this challenging role, and his performance is crucial to revealing the complex dynamics within the Targaryen family.
4. Tanzyn Crawford as Tanselle

Tanselle, a puppeteer with a heart, adds warmth to Dunk’s often harsh world. Known as ‘too tall,’ she captures the attention of Dunk, who aims to protect her when danger arises. In the story, her brief yet impactful presence leaves a lasting influence on both Dunk and the viewers. Portrayed by Tanzyn Crawford, known for Swift Street and Tiny Beautiful Things, her connection with Dunk serves as a reminder of kindness amidst chaos.
5. Bertie Carvel as Prince Baelor “Breakspear” Targaryen

Prince Baelor, known as “Breakspear,” is celebrated throughout the realm. As the rightful heir and son of King Daeron II, his strength and skill in tournaments earn him respect and admiration. Drawn into the political complexities of Westeros, Baelor’s character embodies the ideal prince. Bertie Carvel, an award-winning actor from shows like The Crown and Doctor Foster, brings this beloved character to the screen, adding depth and gravitas to his regal presence.
6. Sam Spruell as Prince Maekar Targaryen

Prince Maekar, Aegon’s father, experiences a tragic twist in his life, marked by loss and remorse. Following a horrific incident where he inadvertently kills his brother Baelor, his world shifts drastically. Faced with tough decisions, including sending his son away and allowing Aegon to begin his path as Dunk’s squire, Maekar’s character showcases the weight of leadership. Sam Spruell, recognized for roles in Dune: Prophecy and Doctor Who, captures the complexity of this Targaryen prince.
7. Daniel Ings as Ser Lyonel Baratheon

Ser Lyonel Baratheon, also known as “Lyonel the Laughing Storm,” stands out for his impressive stature and booming laughter. A formidable fighter at Storm’s End, his colorful personality makes him a beloved figure in tournaments. Daniel Ings, recognized for appearances in Sex Education and The Crown, is set to embody Lyonel’s endearing yet powerful spirit in this upcoming series.
What is “A Knight of the Seven Kingdoms” about?
“A Knight of the Seven Kingdoms” revolves around the adventures of Ser Duncan the Tall and his squire, Aegon Targaryen, depicted in a lighter, more character-driven narrative compared to previous series.
Who are the main characters in “A Knight of the Seven Kingdoms”?
The main characters include Ser Duncan the Tall, Aegon Targaryen (Egg), Prince Aerion Targaryen, and several other pivotal figures who influence the story’s events.
When is “A Knight of the Seven Kingdoms” releasing?
The series is anticipated to premiere in 2026, offering fans a fresh perspective on the world of Westeros.
Who plays Duncan the Tall?
The role of Ser Duncan the Tall is played by Peter Claffey, an Irish actor known for his previous work in other series.
Is the series based on a book?
Yes, “A Knight of the Seven Kingdoms” is based on George R.R. Martin’s novellas, exploring characters and stories that precede the events of “Game of Thrones.”
As you gear up for this new adventure in Westeros, the characters in “A Knight of the Seven Kingdoms” promise to deliver unforgettable stories and intricate relationships. With both familiar and new faces, each character adds richness to the narrative. What are you most excited to see unfold in this series? Leave your thoughts in the comments below!