Character from A Song of Ice and Fire by George R.R. Martin
The Mountain That Rides — eight feet tall, freakishly strong, and cruel beyond measure. Tywin Lannister's attack dog who murdered Elia Martell and her children and killed Oberyn in trial by combat.
Gregor Clegane is less a person than a force of destruction shaped like a man. Nearly eight feet tall with massive arms and a perpetually angry expression, he suffers from constant headaches that may explain his violence — though nothing excuses it. He raped and murdered Elia Martell and smashed her infant son's head against a wall. He burns villages for sport, kills his own men on whims, and crushed Oberyn Martell's skull with his bare hands. After being poisoned by Oberyn's spear, Qyburn reanimated him as the silent, undead Ser Robert Strong.
A freakish giant of a man, nearly eight feet tall and thick with slabs of muscle, the largest man in Westeros by far. Small, piglike eyes peer from a broad, heavy face. Dark hair cropped close to a massive skull. Encased in enormous plate armor that no other man could wear, wielding a greatsword one-handed as lesser men wield daggers.
Also known as: The Mountain, Gregor, Ser Gregor, The Mountain That Rides, Ser Robert Strong