The players' default AC from the gameArmored Core VI: Fires of Rubicon, piloted by the player characterC4-621. LOADER 4 is a RaD scout AC using all XC-2000 series RaD produced parts and BAWS produced internal combustion generator. Default armaments includeenergy blade, assault rifle and right side shoulder mountedmissile pod. LOADER 4 is easily distinguished by its elongated head unit, the orange glow on its head unit also giving it anone-eyedappearance. LOADER 4 is painted primarily in gunmetal grey and black, with various glowing orange parts around the body.