Rule 34 Dev - arms_behind_back bat_symbol batgirl batgirl_(cassandra_cain) bit_gag black_bodysuit black_hair bodyusit bondage bound_arms bound_legs brown_eyes cassandra_cain collar dc dc_comics gag gagged leash leash_and_collar leashed_collar looking_at_viewer psudonym rope rope_bondage short_hair tan_skin|12807113056