The largest, meanest, toughest, or just plain ugliest of Super Mutants are also usually the leaders. Those who stand out (even by Super Mutant standards) rise to the ranks of overlords – huge, hulking monsters almost the size of Behemoths and twice as mean.
Towering over the largest suits of power armor, these muscle-bound leaders stomp across the wasteland gathering others of their kind to their cause, which can be anything from ‘get that shiny thing!’ to ‘Eat that fleshy thing’ to ‘smash stuff’. While humans might not see these as rallying cries, Super Mutants see beyond the shouts to the bloodthirsty death dealer beyond. Knowing that following such a beast will almost certainly lead to greater weaponry and more dead things to eat, they are more than happy to do as they are told while the blood flows.
Fist is a notable example of an Overlord - equally happy to kill at range or up close. Fist happily mulches the enemy using his mini-gun, shredding the soon-to-be food with high calibre firepower. All the while he toys with his prey, taunting and goading them into his line of fire. Anyone brave (or more likely foolish) enough to rise to his mocking shouts will be sliced and diced with the same weapon - this time with the vicious spikes and bladed barrels roughly welded to its rotating maw.