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  === Brynden Rivers ===
  Brynden Rivers, better known as "Lord Bloodraven", is a legitimized bastard son of King Aegon IV Targaryen (called Aegon the Unworthy) and Melissa Blackwood. He is one of only three characters (the others being Aemon Targaryen and Walder Frey) to have appeared in both the ''A Song of Ice and Fire'' novels and the ''Tales of Dunk and Egg'' novellas. He is an albino, with white skin, long white hair, and red eyes. He has a red birthmark on his left cheek, said to be in the shape of a raven, and thus the source of his nickname "Bloodraven".
  Bloodraven remained loyal to his half-brother King Daeron II Targaryen (called Daeron the Good) throughout the Blackfyre Rebellions against another of Aegon's legitimized bastards, Daemon Blackfyre, and their descendants, but was later thrown in prison by his great-nephew King Aegon V Targaryen (called Aegon the Unlikely) for ordering the execution of Aenys Blackfyre despite promising safe passage. He was sent to the Wall as the punishment and later elected the Lord Commander of the Night's Watch, and served in that capacity for many years before disappearing during a ranging beyond the Wall. In ''A Dance with Dragons'', Bloodraven is shown to have become the last greenseer and is fused to the root of a weirwood tree. He begins training Bran Stark in clairvoyance.
  In the HBO television adaptation, the character is only known as "The Three-eyed Raven", and his backstory regarding the Targaryens and the Night Watch is never mentioned. He was briefly portrayed by Struan Rodger in the fourth season finale "The Children", and more extensively by Max von Sydow in the sixth season. In a 2017 interview, Isaac Hempstead Wright (who portrays Bran) hinted that in the television series the Three-Eyed Raven had been "sitting in a cave looking through time" for "thousands of years".