Rule 34 Dev - 2023 4_arms clothing demon dialogue digital_drawing_(artwork) digital_media_(artwork) duo feet genitals grey_background headgear headwear helluva_boss hi_res holding_object holding_towel humanoid kirkland897 machine male mammon_(helluva_boss) mostly_nude multi_arm multi_limb penis robo_fizzarolli robot simple_background towel|8417455248