Carnifex
SasqWatch
It's like I've thought for 3-4 seasons now, I bet Bran has done/caused a lot of issues in the past by going back and messing with things. Who's to say he didn't yell at the Mad King while he was burning Starks and perhaps actually MADE him crazy?? After what we now know he did with Willis, almost anything is possible, assuming he survives what is currently pursuing him.