HBO’s Epic New Fantasy Series Officially Adds a Crucial Character to Season 2's Expanding Cast

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Published Mar 4, 2026, 12:59 PM EST

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It’s again a good time to be a Game of Thrones fan! We can only say that after the massive win, that A Knight of the Seven Kingdoms was for both fans and creators. The Peter Claffey and Dexter Sol Ansell-led series sort of healed fans, a feat even the cunning characters and beautiful dragons of House of the Dragon could not accomplish. The new series is set betweenHouse of the Dragon and the original Game of Thrones and follows the decline of the Targaryen dynasty.

Dubbed George RR Martin’s favorite spin-off by far, the series is an intimate affair, seen through the eyes of the smallfolk of Westeros, as we follow Ser Duncan the Tall (Claffey) and his quick-witted squire Egg (Ansell), who is a Targaryen prince in disguise. Based on The Hedge Knight novella the first season of the series is a hit with fans as we see Dunk and Egg’s first meeting and the trial of the seven that follows. The series was full of humor, something we haven’t seen in the franchise before, flashbacks, and impactful character moments.

The first season of the six-part series is already done and saw massive viewership numbers, further earning a 94 percent Rotten Tomatoes score.The cameras are already rolling on the new season, which will adapt the second novella, The Sworn Sword. There’s reason to be more excited about the season as it will also bring hints of the Blackfyre Rebellion to our screens, which many fans have been asking for. The story follows Dunk and Egg, serving the aging Ser Eustace Osgrey in the Reach. After discovering that a neighbor, Lady Rohanne Webber, has diverted their stream, a dispute arises, forcing Dunk into another conflict.

'A Knight of The Seven Kingdoms' Season 2 Adds Key Characters

Now, per HBO’s announcement, key cast members have joined the show. Lucy Boynton has been cast as Lady Rohanne, her past credits include Sing Street, Bohemian Rhapsody, The Pale Blue Eyes among others. Also joining her is Peter Mullan as Ser Eustace Osgrey, a Blackfyre sympathizer, and another key figure in the upcoming season. The Scottish actor is well known for Ozark, The Lord of the Rings: The Rings of Power, I Swear, and more. British actor Babou Ceesay has been cast as Ser Bennis, who’ll be an ally to Ser Duncan. His credits include Alien: Earth, Wolfe, Severance, and more.

A Knight of the Seven Kingdoms Season 2 will drop in 2027. Meanwhile, you can check out the first season on HBO Max, and stay tuned to Collider for more such updates.