Rule 34 Dev - 1970s_(style) 3boys broccoli_(company) duke_fleed ga_rune_pose galaxy_angel galaxy_angel_rune great_mazinger grendizer kabuto_kouji male_focus mazinger_(series) mazinger_z multiple_boys retro_artstyle parody retro_artstyle sideburns tsurugi_tetsuya ufo_robo_grendizer|594728082