One of the youngest dragons able to bear a rider, Seasmoke plays a crucial role in “ Second of His Name” as Daemon Targaryen, wounded and surrounded by enemy soldiers, is saved at the last possible moment by the arrival of Seasmoke and his rider, Laenor Velaryon. His rider Aemon was killed during an excursion to Tarth, but Caraxes found a new rider in kindred spirit Daemon, who shares his appetite for war. He is one of the older dragons, and is a veteran of many conflicts, being ridden into battle by Aemon Targaryen during the Fourth Dornish War alongside King Jaehaerys and Prince Baelon, who rode Vermithor and Vhagar.

He is the dragon mount of Prince Daemon Targaryen, but he has been claimed by other riders before. The second dragon we meet, in House of the Dragon‘s second episode, “ The Rogue Prince,” Caraxes is known as the Blood Wyrm for his blood red scales. Syrax is believed to be the mother of Vermax, Arrax, and Tyraxes, and is confirmed to be the mother of Morning, all of whom will be discussed later. She is described as fiercely protective of her rider, Rhaenyra, and while she has not been blooded in combat, she is fearsome enough to ensure that the conflicts between Otto Hightower and Daemon Targaryen end bloodlessly. Syrax is named after a Valyrian goddess and has yellow scales. The first dragon met in House of the Dragon‘s first episode, “ The Heirs of the Dragon,” Syrax is the mount of the dragonrider Princess Rhaenyra Targaryen.

Before you read on, do note that House of the Dragon is introducing its dragons at a deliberate pace and descriptions of dragons not yet seen on the series will contain some spoilers from Fire & Blood, the source material on which the show is based.

Fire and blood dragons