The gigolo rig is an action/fighting rig. The purpose of it, is to give animators a character that can perform well in fight and/or action scenes where drama and emotions are less important.
The characters hands can be replaced with either clubs or gattling guns, which comes with gunfire.
The rig also gives animators the opportunity to add some limited visual effects, such as the gunfire mentioned above, or turning the character invisible but keeping the outlines.