Robin is the handsome and powerful ruler of the Fire Nation, the firelord. A master firebender, he is the husband of Firelady Marian, the father of Prince Nick, the father-in-law of Avatar Judy and the son-in-law to famed firebender and general Iroh. A major event in his life was the brutal Agni Kai that he fought against fellow firebender Shere Khan, in which the latter's face was disfigured by the Firelord's flames. He is a great father and a loyal husband.
- His wife, Firelady Marian, was the firebending master of Avatar Judy.