House of the Dragon sees a return of The Kingsguard, which occupies a prestigious place in the circles of power. The monarch and the royal family are rarely ever without their protection. The two most notable members of the Kingsguard from the original HBO series, Game of Thrones are Ser Jaime Lannister, and Ser Barristan Selmy (also known as Barristan the Bold). They served in the Mad King's and in Robert I Baratheon's Kingsguard.