Um, Can We Talk About These Insane Game of Thrones Theories For a Minute?

We've seen that Bran's character isn't the biggest on the show, but he has been set up as the catalyst for nearly every major event that has happened since season one. (If you missed that, we encourage you to go back and rewatch it all.) So if the theory that Bran is the Night King is true, then he just might be the biggest and baddest villain of them all.