Rule 34 Dev - 1boy 2010s 2018 2d 2d_(artwork) anthro anthro_only artist_name asriel_dreemurr asriel_dreemurr_(god_of_hyperdeath) ass ass_up black_sclera body_markings boss_monster caprine completely_nude completely_nude_male desertkaiju digital_media_(artwork) face_markings floppy_ears furry furry_male furry_only glowing goat goat_boy goat_ears goat_horns heart horns looking_at_viewer male male_anthro male_only mammal monster monster_boy nude nude_anthro nude_male rainbow_outline short_horns small_horns solo_anthro solo_male tail tail_tuft thighs top-down_bottom-up undertale undertale_(series) video_game_character video_games white_body white_fur|1059259