MERC Gunners are large imposing MERCs adorned in heavy armor and equipped with dual sub machine guns. Heavy gunners are physically strong, immune to being stunned from light attacks thanks to their size. Heavy Gunners will spray their target with weapon fire (albeit inaccurately), and will kick away enemies that get up close. When damaged heavily, Gunners fall to one knee in a stagger and are stunned temporarily, allowing for a free execution. Should the gunner be left alone, they will recover and rejoin the fight.
from wiki
