Board Thread:News and Announcements/@comment-29325269-20170630223913/@comment-9735507-20170803162529

I think the Night King is just the first guy who got transformed into a White Walker. That's all. The creators wanted to give the White Walkers a definitive leader, and they made it him. Maybe they'll merge him with the books' Night's King, but I feel like they won't go that far.

But I also certainly feel that by series' end, Bran's mind will permanently go back in time to live as Brynden Rivers, then as the old three-eyed raven, before dying for his mistakes as a youth.