During the back end of Season 1 and throughout Season 2, Jacaerys Velaryon has certainly proved to be one of the most capable and diligent characters in House of the Dragon. As Rhaenyra Targaryen's eldest son and heir, he is in line for the Iron Throne should the Blacks prevail, but beyond his birthright, it is clear that out of all the House of the Dragon characters, he would be one of the best kings or queens.