When Tyrion announced his support of Bran being made king, he said Bran had the best stories. The world at large took that literally, and started listing every character that had better stories than Bran.
Namely, Bran is essentially the keeper of all memory, which is why the Night King was after him. Bran also had another clear purpose: making sure Jon Snow knew his true parentage. Bran pushed Sam to reveal the secret to Jon, a sequence of events that may have pushed Daenerys off the deep.
Tyrion's reasoning for suggesting Bran was simple: Bran held all of the stories of Westeros. He knew its people, their fears and joys, and times of war and peace. A storyteller, Tyrion reasoned, could unite every person in every kingdom and prevent them from repeating the bloody mistakes of their past.
One of the most popular Game of Thrones fan theories about the Mad King is that his madness was a result of Bran Stark warging into him since Bran had a vision of Aerys and had already affected Hodor. However, that ignores all the events in the Targaryen King's life that drove him to insanity.
Narrator: It's official, "Game of Thrones" has ended, and the character who won it all was one of the most overlooked candidates for the crown. Bran, the youngest Stark, has no blood claim to the throne, and he never seemed particularly interested in ruling.
When Tyrion announced his support of Bran being made king, he said Bran had the best stories. The world at large took that literally, and started listing every character that had better stories than Bran.
But not Bran. He cares for no one at all. If someone does not benefit him or is incapable of serving his ends, they are dispensable. This relentlessness - and unwillingness to prevent the tragedy that forges his path to royalty - is what makes Bran the true villain on Game of Thrones.
According the Night King theorists, Bran actually skinchanged into this man in an attempt to prevent the Children of the Forest from turning him, but his plan failed and Bran gets stuck. And thus, Bran became the Night King.
According to Old Nan, the Night's King may in fact be (hold on to your small clothes) a Stark! If that isn't enough, legend has it that the Night's King was not just any Stark, he was King Brandon Stark's brother—or possibly Brandon Stark himself!
In Season 8, Bran reveals that the Night King wants to destroy him because he holds all of the history of man.
Aegon I Targaryen, also known as Aegon the Conqueror and Aegon the Dragon, was the first Lord of the Seven Kingdoms and king on the Iron Throne, having conquered six of the Seven Kingdoms during the Conquest. The dragonlord was the founder of the ruling Targaryen dynasty of Westeros.
Mad King Aerys II Targaryen brutally executed Ned Stark's father and older brother, Rickard and Brandon Stark. Jaime Lannister, dressed in Kingsguard white, begged Aerys to surrender, but the Mad King ordered his pyromancer to "burn them all" with hidden wildfire.
There were few who knew any of it better than Stannis Baratheon. The rightful King of the Seven Kingdoms, given the parentage of Joffrey and Tommen, he was the king who truly should have sat the throne when his brother, Robert, died.
Exactly why The Night King insists on killing Bran is later summed up by the Three-Eyed Raven himself in season 8, episode 2, "A Knight Of The Seven Kingdoms," by stating “He wants to erase this world, and I am its memory.” Since the Three-Eyed Raven is basically a living record of mankind within the world of Game Of ...
(At least in the show — in the books “the Three-Eyed Raven” is one specific guy, while the job title is “greenseer.”) As part of that job, Bran had all of the old Three-Eyed Raven's visions uploaded into his mind back in season six, which fried his brain a bit.
Bran says at one point that he can "never be lord of anything" because he's the Three-Eyed Raven. This is in reference to how he's no longer technically a Stark, so he can't be lord of Winterfell.
So, when Jon saved Commander Jeor Mormont from a Wight, using his bare hand to throw a lantern across the room—he let out a scream. He was burned by the fire; he is not fireproof.
The White Walkers were thousands of years old, coming from the time preceding the Age of Heroes. Born of powerful and untested magic, they were created to protect the Children of the Forest from the First Men, who had waged war on them ever since they had arrived from Essos.
Simply put: no, the Night King is not a Targaryen, as poetic as it would have been for Jon / Aegon and Daenerys to have to face off against their many-greats-grandfather.
The Night King was portrayed by British-American actor Richard Brake in seasons 4 and 5 and then by Slovakian actor and stuntman Vladimir Furdik in seasons 6 to 8.
Still, fans were miffed to see Bran and Rickon Stark's direwolves unceremoniously killed off in the sixth season of the show.
No, the Night King is not a Targaryen.
In the books, however, the story of the Night King is slightly different. The Night King isn't the leader of the White Walkers. Instead, he's a legendary historical figure who supposedly betrayed the Night's Watch to marry a “corpse queen” and then crowned himself a king.
There's no guarantee Bran—who is not the blood of the dragon—can control one. When you warg into any creature you control them, and dragons are not slaves. If he enters one of their minds, he could accidentally turn them into a chaotic weapon of death.
Season 3 - Joffrey, Tywin, Mance Rayder, Melisandre, Ramsay Bolton. Season 4 - Tywin, Mance Rayder, Melisandre. Season 5 - The High Sparrow, Roose Bolton, Ramsay Bolton, Melisandre, the Night King, the Slave Masters. Season 6 - The High Sparrow, Ramsay Bolton, the Night King, the Slave Masters.
As the new King of the Andals, the First Men, and the Rhoynar, Bran is the most powerful individual in Westeros. His supernatural abilities further add to his position, making him unique among the continent's rulers.