King Viserys I Targaryen and King Aegon II Targaryen. Following the death of Viserys, Ser Otto Hightower orders Arryk and his brother to locate Aegon The characters from the medieval fantasy television series House of the Dragon are based on their respective counterparts from author George R. R. Martin's 2013 novella The Princess and the Queen, his 2014 novella The Rogue Prince and his 2018 novel Fire & Blood. The series follows the devastating war of succession for the Iron Throne of the continent of Westeros known as the "Dance of the Dragons Otto Hightower (portrayed by Rhys Ifans) is the father of Ser Gwayne Hightower and Queen Alicent Hightower who served as the Hand of the King on the Small Council under King Jaehaerys the Conciliator, King Viserys I Targaryen and King Aegon II Targaryen. Following the death of Queen Aemma Arryn, he encourages Alicent to become close to the grieving king; this results in their marriage and the birth of Otto's eldest grandchild Aegon. Otto is pressured by his older brother Lord Hobert Hightower to make Aegon the heir to the Iron Throne over Viserys's chosen heir Princess Rhaenyra Targaryen, as it would strengthen their house's power. He is dismissed as Hand of the King by Viserys when he discovers Otto set-up Alicent to become his wife, believing Otto's judgment compromised by his desire for the throne. Ten years later, Otto is reinstated as Hand of the King following the sudden death of Lord Lyonel Strong, orchestrated by Larys Strong to help Alicent, who wanted her father to regain his position. Otto spends several years conspiring with fellow Small Council members Ser Tyland Lannister, Lord Jasper Wylde, and Grand Maester Orwyle to usurp the throne and crown Aegon king, while Viserys succumbs to his crippling illness. Upon Viserys' death, Otto enacts their plan of crowning Aegon king. In season 2, Otto urges Aegon to be miserly towards the smallfolk of King's Landing, thus securing resources in the impending war with Queen While it was seemingly a success, he soon became delirious and bedridden, and with his dying words he mistakes Alicent for Rhaenyra and rambles on about the "Prince That Was Promised", but Alicent mistakenly believes that he was telling her that he wanted their son Aegon on the throne. Viserys soon dies from his illness, and the Small Council enacts a long-held plan to make Aegon the new king, despite Rhaenyra still being the chosen heir, reigniting the feud between Rhaenyra and Alicent's factions that eventually escalates into civil war. In season 2, he appears during Daemon's mysterious visions while staying in Harrenhal. When Daemon presents to Rhaenyra the head of who he claims was Sheepstealer's dragonrider, the one responsible for Jace's death, she remains confused and angry as she wanted to question the rider and avenge Jace herself. === Otto Hightower === Otto Hightower (portrayed by Rhys Ifans) is the father of Ser Gwayne Hightower and Queen Alicent Hightower who served as the Hand of the King on the Small Council under King Jaehaerys the Conciliator, King Viserys I Targaryen and King Aegon II Targaryen. Following the death of Queen Aemma Arryn, he encourages Alicent to become close to the grieving king; this results in their marriage and the birth of Otto's eldest grandchild Aegon. Otto is pressured by his older brother Lord Hobert Hightower to make Aegon the heir to the Iron Throne over Viserys's chosen heir Princess Rhaenyra Targaryen, as it would strengthen their house's power. He is dismissed as Hand of the King by Viserys when he discovers Otto set-up Alicent to become his wife, believing Otto's judgment compromised by his desire for the throne. Ten years later, Otto is reinstated as Hand of the King following the sudden death of Lord Lyonel Strong, orchestrated by Larys Strong to help Alicent, who wanted her father to regain his position. Otto spends several years conspiring with fellow Small Council members Ser Tyland Lannister, Lord Jasper Wylde, and Grand Maester Orwyle to usurp the throne and crown Aegon king, while Viserys succumbs to his crippling illness. Upon Viserys' death, Otto enacts their plan of crowning Aegon king. In season 2, Otto urges Aegon to be miserly towards the smallfolk of King's Landing, thus securing resources in the impending war with Queen Rhaenyra and her supporters. He serves as the successor to Lord Lyonel Strong as the Master of Laws on the Small Council of King Viserys I Targaryen and King Aegon II Targaryen. After the immediate death of Viserys, Jasper is revealed to be part of a scheme to crown Aegon as king, and is threatened by Queen Alicent Hightower when he defends their reasoning to not include her in their plans. In season 2, following the Battle of the Burning Mill, Jasper dismisses the conflict as a consequence of the ancient feud between House Blackwood and House Bracken. He is later warned by Mysaria that Arryk had snuck onto Dragonstone in an attempt to assassinate Rhaenyra. After confronting and killing his brother, Erryk impales himself on his sword in grief. Erryk and Arryk are then buried together on Dragonstone. Arryk Cargyll (portrayed by Luke Tittensor) is the twin brother of Ser Erryk Cargyll. He is a member of the Kingsguard under King Viserys I Targaryen and King Aegon II Targaryen. Following the death of Viserys, Ser Otto Hightower orders Arryk and his brother to locate Aegon. In season 2, he answers a letter sent by Lady Rhaena Targaryen and agrees to shelter the youngest sons of Queen Rhaenyra Targaryen, Prince Aegon "the Younger" Targaryen and Prince Viserys Targaryen, at his home in Pentos. Sharako Lohar (portrayed by Abigail Thorn) is an eccentric Lysene admiral and the commander of the Triarchy fleet. Residing in the free city of Tyrosh, she agrees to meet with Ser Tyland Lannister when he is sent to negotiate with the Triarchy for their help in breaking the Velaryon Fleet's blockade of King's Landing.