2boys abe_sapien anal_penetration balls ballsack black_hair blue_skin body_markings cock_hungry cum cum_hungry cum_on_body cum_while_penetrated dark_horse demon erect_nipples erection fingerless_gloves flaccid_penis foreskin foreskin_folds gay gills goatee green_skin hellboy hellboy_(series) holding_leg holding_penis horns huge_penis humanoid humanoid_penis icemanblue intact interspecies legs_held_open male male/male male_nipples male_only masculine mature_male mouth_open no_pupils nude_male partially_retracted_foreskin penis penis_on_face penis_size_difference piscine red_skin scrotum sideburns smooth_penis spread_legs tail_in_ass testicles uncut yaoi