a famous knight and retainer to house lannister, he is well known for his enormous size, prowess in battle, extremely cruel nature, and uncontrollable temper. he is the older brother of sandor "the hound" clegane; who has hated him ever since gregor gruesomely scarred sandor by shoving his face into a brazier when they were children. after being mortally wounded in a duel with oberyn martell, he is resuscitated by qyburn via sinister means and becomes the personal bodyguard of cersei lannister under the name robert strong.