Bran drove the Mad King crazy — just like he did with Hodor.
It was mentioned in the series that the Mad King was obsessed with fire and his favorite phrase was “Burn them all!” But what if there’s a deeper reason for his madness? Well, fans do remember one character with a story that reminds us of this very much — Hodor, who used to be named Wylis and who became mentally disabled after Bran’s intervention with his younger self during a vision.
What if Bran also had something to do with the Mad King too? A lot of fans are convinced that that’s exactly what happened.