‘A Knight of the Seven Kingdoms’ Cast Guide: Who’s Who in the ‘Game of Thrones’ Prequel?

You may remember hearing vague references to the adventures of Ser Duncan the Tall here and there throughout “Game of Thrones,” but when we meet him in “A Knight of the Seven Kingdoms,” he’s still an awkward, lanky guy going by his childhood nickname, Dunk.

Dunk became Ser Duncan after being knighted by Ser Arlan of Pennytree (Danny Webb), whom he spent years traveling with — and who very few people in Westeros have ever heard of. Since no one witnessed the knighting, Dunk has a hard time getting anyone to take him seriously. Still, he aspires to greatness.

Egg, an adorable little bald boy, drives Dunk crazy. But he’s also his only friend. Dunk first runs into the child at an inn he sleeps at on his way to a jousting tourney. Egg immediately shows a defiant streak, sassing Dunk when he asks for help with his horse and later making fun of his clothes, truthfully telling Dunk he doesn’t look like a knight. Still, he asks Dunk to take him in as his squire, hopeful to leave the inn and see a bit more of the world. Though Dunk declines, Egg sets out on his own and essentially gives himself the squire job, building a fire and cooking dinner at Dunk’s camp before he returns for the night. And it’s Egg who tells Dunk that he ought to go by Ser Duncan to command more respect. They’re an odd pair, but they’re good for each other.

Ser Arlan is an elderly hedge knight who was Dunk’s mentor. After his death in the premiere, Dunk takes Arlan’s sword and heads out to the tourney to become a knight himself.

Raymun is the squire and cousin of Ser Steffon Fossoway, a knight at the tourney.

Ashley (“The Lost City of Z,” “The Terror,” “Masters of the Air”) plays Steffon Fossoway. A knight and heir to House Fossoway of Cider Hall during King Daeron II Targaryen’s reign, Ser Steffon was one of the entrants in the tourney at Ashford Meadow, which is a key event in George R.R. Martin’s “The Hedge Knight” story about Ser Duncan and Egg.

Best known for playing Luke Curran in the Channel 4/Netflix comedy series “Lovesick,” Ing plays Lyonel Baratheon. Nicknamed “Laughing Storm,” Lyonel was the Lord of Storm’s End and the head of House Baratheon during King Aegon V Targaryen’s reign on the Iron Throne. He is a charcter included in George R.R. Martin’s “Dunk and Egg” short story, “The Hedge Knight,” on which the HBO series is based. Ing’s other notable credits include “The Crown,” “Black Mirror,” “Sex Education” and The Gentlemen

Australian actress Crawford (“Tiny Beautiful Things,” “Swift Street”) plays Tanselle. Nicknamed “Tanselle Too-Tall” in George R.R. Martin’s “The Hedge Knight” installment of his “Dunk and Egg” stories, Tanselle was a Dornish puppeteer during the reign of King Daeron II Targaryen.

Aerion Targaryen is the second eldest son of Prince Maekar Targaryen (Sam Spruell). He’s a grandson of the king, but he and his brothers aren’t in line for the Iron Throne since Maekar has an older brother, Baelor. Aerion is played by Finn Bennett, best known for HBO’s “True Detective: Night Country,” Netflix’s “Black Doves” and the 2025 film “Warfare.”

Baelor Targaryen is played by Bertie Carvel, whose credits include stage roles including Miss Trunchbull in “Matilda the Musical” and Rupert Murdoch in “Ink” and screen roles like “The Tragedy of Macbeth” (2021) and “The Crown.” Up next, he’ll be seen as Cornelius Fudge in HBO’s “Harry Potter” series.

In “A Knight of the Seven Kingdoms,” Baelor is the eldest son of King Daeron II, making him the crown prince of Westeros.

Known for his work in the “Fargo” TV series (2014), “Legend” (2015) and “Small Axe” (2020), Spruell plays Maekar I Targaryen. Appearing in not only George R.R. Martin’s “The Hedge Knight,” the source material for “A Knight of the Seven Kingdoms,” Maekar is referenced through Martin’s main “A Song of Ice and Fire” book series. He was the fourth son of King Daeron II Targaryen and was Prince of Summerhall and an army commander who served in two of the Blackfyre Rebellions.