Jacaerys Velaryon

Jacaerys stands at about 6ft tall, with broad shoulders and the body build of a swimmer. He has deep brown curly hair that parts down the middle and sits just above the base of his neck and hazel eyes to match. He has a square set jaw and slim ridged nose. His lips are full and sit in a natural smoulder as well as his eyebrows being rather straight. He is the rider of Vermax.

Jacaerys is the eldest son of Rhaenyra Targaryen and her husband Laenor Velaryon, and older brother of Lucerys and Joffrey Velaryon. He is second-in-line to inherit the Iron Throne after his mother, Rhaenyra. Per an agreement between Viserys I Targaryen and Corlys Velaryon, Jacaerys is expected to take the name "Jacaerys Targaryen" upon acceding to the throne.

Although presented as legitimate, Jacaerys and his brothers are in truth bastards fathered by Ser Harwin Strong.

Jace is good-natured. He wants to be a successful, respected ruler, and is willing to do whatever it takes to defend his family and his claim to the Iron Throne. He is not concerned with the whispers of the royal court surrounding his legitimacy.

Jace and Luke are playing with Harwin when Rhaenyra and Laenor return to their chambers in the Red Keep with the newborn Joffrey. There, Jace and Luke show the dragon egg that they chose for Joffrey, and Jace says that he let Luke choose. Laenor takes Jace and Luke back to the Dragonpit, where Jace is trained by Dragonkeepers to command Vermax. While there, Jace, Luke, and Aegon pull a joke on Aemond by giving him a pig dressed as a dragon and making squealing noises.

Jace later trains in arms alongside Luke, Aegon, and Aemond under Ser Criston Cole. When Harwin advises Criston to train the boys equally, Criston grabs Jace and has him fight Aegon, who Criston has knock Jace to the ground. Harwin steps in to defend Jace, and Harwin is provoked by Criston into attacking him. As a result, Harwin is dismissed from court and sent back to Harrenhal. Harwin promises Jace that he will return. Jace runs to watch Harwin as he leaves, and Rhaenyra assures him that they will exchange letters. He then asks his mother if Harwin is his father, and if he is a bastard, but Rhaenyra tells him that he is a Targaryen, and that is all that matters.

At the conclusion of a Small Council meeting, Rhaenyra proposes to betrothed Jacaerys with Alicent's daughter, Helaena in an effort to mend the rift between herself and Alicent and unite their families, to which Alicent ultimately declines. Jacaerys later departs with his mother, father, and younger brothers to Dragonstone.

Jace is present with Rhaenyra, Laenor, Lucerys, and the rest of the royal family during the funeral of his aunt, Laena Velaryon. During the funeral reception after, Rhaenyra implores Jace to comfort his grieving cousins. Jace replies that he can sympathize with their grief, informing his mother that they should be at Harrenhal mourning the loss of Lord Lyonel and his true father, Ser Harwin. Rhaenyra chastises Jace that visiting Harrenhal would not be appropriate, reminding Jace that the Velaryons are their true family, while the Strongs are not. Jace proceeds to walk over to Baela and Rhaena, with Baela holding his hand for comfort.