These massive Greenskin warriors are considered the enforcers and lieutenants of the tribe's current Greenskin Warboss, where their duties usually meant that they would go around and bash the heads of those disobedient Greenskin that tries to stir up trouble. Only the largest and most toughest Greenskin is allowed into this group of bruisers, and the most common way for an Greenskin to become a Big 'Un is to simply challenge one in combat.[4a]