The Mountain Got Changed. The mountain is slowly and painfully dying and qyburn has to work hard to save his life. He actually lobbied for a role in the show and auditioned for khal drogo before he won the part of gregor.
The mountain was killed in the fourth season of game of thrones when oberyn martell stabbed him with a spear covered in a nasty flesh eating poison. Pedro pascal was the embodiment of oberyn swift fast ironic and promiscuous. They had to have a big man for the fight with oberyn martell.
The story behind the hound s little bird nickname for sansa.
Of course oberyn got his head exploded when he showboated just a bit too much but the mountain was still a gonner. The mountain was first played by actor and wrestler conan stevens in game of thrones first season. And he pulled off the character like nobody else would. 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.