Rule 34 Dev - 1970s_(style) 1980s_(style) 2boys baseball_cap bullet engineer gatling_gun gm_(mobile_suit) gun gundam hangar hat head highres jumpsuit long_hair machine_gun mecha mobile_suit_gundam multiple_boys oldschool ponytail realistic retro_artstyle robot robot_(santouhei) science_fiction toolbox weapon|3928169934