MAJOR spoilers for House of the Dragon season 2, episode 3, and for Fire & Blood, the show's source material.
Who Plays Alys Rivers In House Of The Dragon Alys Is Played By GLOW Actress Gayle Rankin Actress Gayle Rankin joins the House of the Dragon season 2 cast as Alys Rivers. She can be recognized for her roles in TV series like GLOW and the miniseries Perry Mason. She's also appeared in the movies The Greatest Showman and Alex Garland's Men.
What Happens With Alys Rivers & Daemon At Harrenhal Alys Somehow Causes Daemon To See Haunting Visions, Causing Him To Face His Inner-Demons Close Upon Daemon's arrival in Harrenhal, the ghostly, ancient castle appears to be a winding passage into his psychology. Toward the end of the episode, Daemon begins seeing visions, including one of young Rhaenyra stitching up a small boy's head, hinting at his guilt for his involvement in Blood & Cheese.