Rule 34 Dev - 3girls arm_cannon bfg_9000 bfg_9000_(personification) blue_hair brown_legwear cacodemon cyclops demon_girl demon_horns doom_(series) energy_gun glowing glowing_eyes green_eyes highres horns mecha multiple_girls one-eyed pantyhose personification plasma_rifle robot silver_hair size_difference substance20 weapon|13724344062