Rule 34 Dev - arms_behind_back ball_gag barbara_gordon batgirl batman_(series) black_canary bluebird bluebird_(dc) bondage breasts collar dc dc_comics dinah_lance elderrunic female femsub gag gagged green_arrow_(series) harper_row machine multiple_girls multiple_subs restrained rope rope_bondage spoiler_(dc) stephanie_brown superheroine|7788038784