Got Who Did The Mountain Kill. He kills missandei and daenerys is forced to watch as missandei s body and head fall to the ground. I theorize that when they were children sandor looked into the flames and foresaw cleaganbowl gregor dying at the hands of sandor.
Tywin had joined the rebellion late. Gregor clegane nicknamed the mountain that rides or simply the mountain is a fictional character in the a song of ice and fire series of fantasy novels by american author george r. He had been aerys s friend and hand for decades until he resigned just a year before the rebellion.
Due to his incredibly massive size he is called the mountain that rides or more often simply the mountain after being poisoned in a duel with oberyn martell gregor almost.
Tywin needed the targaryen children dead for two reasons. Tywin needed the targaryen children dead for two reasons. And it was a knock down drag out fight that. Despite being killed the mountain crushed his head like a grape oberlyn s spear was coated in a lethal venom which nearly killed the mountain as well.