Drogon

Drogon was one of the three dragons hatched by Daenerys Targaryen in the wastelands beyond Lhazar, alongside his brothers Rhaegal and Viserion. He was named for Daenerys' late husband, Khal Drogo. He can be distinguished by his black and red scales, and red-black wings. He was the personal mount of Daenerys Targaryen from the Attack at Daznak's Pit until just before Daenerys's death in the Battle of King's Landing. Following the deaths of Viserion and Rhaegal during the Great War, he is the last surviving of Daenerys' dragons, and presumably, the only living dragon in the known world.