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  ====Season 6====
  As part of his training, Bran is shown several visions of the past, including Ned Stark and Howland Reed confronting Ser Arthur Dayne and Ser Gerold Hightower at the Tower of Joy, and sees how the Children of the Forest injected one of the First Men with dragonglass in a ritual to create the Night King, the first White Walker, as a defense against the other First Men. However, the Three-Eyed Raven is always quick to withdraw Bran from the visions, warning that he may become trapped in them if he stays too long. Growing bored with his slow progress, Bran enters a vision on his own and witnesses the Night King in the present day, who sees Bran and marks him, making the Three-Eyed Raven's cave vulnerable to the White Walkers' magic.
  The Three-Eyed Raven enters Bran into another vision of Winterfell's past to impart all his knowledge, but before the transfer is completed the White Walkers attack the cave, killing the Three-Eyed Raven, Summer, and the Children of the Forest. Bran, still caught in the vision, wargs into Hodor through the latter's younger self (named Wylis), and he and Meera flee as Hodor carries Bran's unconscious body out of the cave. Meera carries Bran into the forest, while Hodor gives his life to hold back the cave door against the army of wights until they overwhelm him. Bran witnesses how his warging accidentally linked Hodor's past and present mind, inducing a brain damaging seizure in young Wylis and causing him to repeat Meera's command to "hold the door" over and over, until he can only slur the word "Hodor".
  After the wight army catches up to them again, Bran and Meera are rescued by Bran's uncle Benjen Stark, who had been killed by the White Walkers several years prior but was revived by the Children. Benjen whisks the duo to safety and advises that Bran is now the '''Three-Eyed Raven''' and must learn to control his powers before the Night King attacks the Seven Kingdoms. Benjen leaves Bran and Meera at the weirwood in the Haunted Forest, as the Wall's magic prevents the dead (and therefore, Benjen) from passing it. Bran touches the weirwood and witnesses the rest of the vision of Ned Stark at the Tower of Joy. He discovers that Lyanna Stark died giving birth to Rhaegar Targaryen's son Aegon, whom Ned found and raised as Jon Snow at Lyanna's dying request.