Orcs value size and strength above all else in their warrior caste. The largest among a tribe tend to band together to bully and boss the other Orcs around. These Orcs are known as Big 'Uns.
The Black Fang Orcs tribe was no exception. A number of these Big 'Uns became Warboss Gorgut's loyal bodyguard, and were given the best armour and weaponry the tribe could scavenge.