- The oversized Olog Graug is a nigh-unstoppable juggernaut of wanton destruction, crushing, and mayhem. These behemoths grow to fifteen-feet tall or more, and their skin grows tough and leathery, making them extremely resistant to all manner of arrows, bolts, and bladed or blunt weapons.
- They're feral beasts, naturally combative, highly territorial, and ill-mannered. Graugs are uncommon in Mordor but pose a genuine threat to the Uruks, especially when their lairs are encroached upon. Even Trolls steer clear of the giant beasts, and when they do not, they tend to die horribly.
- Sauron has begun to use Graugs to cross-breed powerful Hill Trolls ; scaly monsters able to tolerate even noonday sunlight.