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breasts crossgender demon female hair human mammal mettaton not_furry simple_background standing underfell undertale video_games wings 2016 anal anal_penetration balls blush erection gay-albino-robot girly hair machine male mettaton not_furry open_mouth oral penetration penis robot soulplay tentacles undertale video_games ambiguous_gender artist clothing crown human machine male mammal mettaton not_furry protagonist_(undertale) robot royal underkeep undertale unknown_(disambiguation) video_games 1other androgynous bad_id bad_twitter_id black_hair brown_hair carrying commentary cyborg frisk_(undertale) gloves grin hair_over_one_eye jitome mettaton mettaton_ex norasame_(dagako) pink_eyes smile socks solid_circle_eyes sparkle thick_thighs thighs undertale white_gloves <3 2016 ;p alphys amalgamate android animated_skeleton anthro armor asgore_dreemurr asriel_dreemurr beverage blaster blue_skin bone boss_monster cape caprine clothing coffin crown deity dinosaur endogeny evil_grin eye_patch eyewear female fire fish flowey_the_flower food footwear gaster_blaster gills glasses goat group hair hoodie hot_dog human humanoid knife lemon_bread lizard long_hair looking_at_viewer lynxgriffin machine magic_user male mammal marine melee_weapon memoryhead mettaton mettaton_neo monster phone photoshop_flowey pie polearm ponytail protagonist_(undertale) reaper_bird reptile robes robot royalty sans_(undertale) scalie shoes silhouette simple_background skeleton smile snowdrake's_mother soul spear tea tea_cup television toriel undead undertale undyne undyne_the_undying video_games weapon white_background wings yellow_eyes young kjponymlp machine mettaton not_furry robot undertale video_games <3 :< age alphys bone cake canine caprine child clothing dog elemental eye_patch eyewear fire_elemental fish flower flowey_the_flower food fuku_fire goat human mammal marine mettaton monster monster_kid napstablook papyrus plant protagonist_(undertale) sans servantofpsychotic skeleton skip tongue tongue_out toriel undertale undyne video_games young 2016 animated_skeleton annoying_dog_(undertale) bone flowey_the_flower gaster ghost human male mammal mettaton monster_kid napstablook papyrus_(undertale) protagonist_(undertale) sans_(undertale) skeleton spirit tagme undead undertale video_games リゴリゴ 2016 animated_skeleton asgore_dreemurr blonde_hair bone boss_monster caprine eye_patch eyewear facial_hair female fish goat hair horn human machine male mammal marine mettaton papyrus_(undertale) photoshop_flowey protagonist_(undertale) robot sans_(undertale) skeleton undead undertale undyne video_games リゴリゴ anthro armless asriel_dreemurr boss_monster brown_hair candy caprine carpet chocolate clothed clothing crayon curled_up dark drawing eyes_closed food fur goat group hair human inside long_ears lying mammal mettaton monster monster_kid_(undertale) on_back on_side pajamas papyrus_(undertale) pillow protagonist_(undertale) sans_(undertale) scarf sleeping smile tc-96 text undertale undyne video_games white_fur yellow_skin commentary fins greyscale ko-on_(ningen_zoo) mettaton monochrome no_humans shark sharknado teeth undertale alphys annoying_dog_(undertale) asgore_dreemurr flowey_the_flower greater_dog group mettaton monsterkid nappstablook papyrus protagonist_(undertale) sans temmie_(undertale) toriel undertale undyne video_games adorkable alphys bdsm blush bondage bound cute eyewear feet female female/female foot_fetish foot_focus glasses humanoid lizard love machine marine mettaton reptile robot scalie sharkstormbridge teasing tickling toes undertale undyne video_games webbed bed breasts captainjingo english_text eye_patch eyes_closed eyewear female fingering fish human machine male mammal marine masturbation mettaton monster open_mouth pillow pussy robot sofa television text thought_bubble undertale undyne video_games ? bed black_and_white blush breasts captainjingo dialogue english_text eye_patch eyes_closed eyewear female fingering fish human humor machine male mammal marine masturbation mettaton monochrome monster oprah_winfrey pillow robot sofa speech_bubble television text thought_bubble undertale undyne video_games yelling 2016 alphys bite blush dialogue duo eye_patch eyewear female fish fisting glasses lab_coat lizard machine marine mettaton nam reptile robot scalie sex tagme undertale undyne video_games 2016 alphys asgore_dreemurr asriel_dreemurr blonde_hair bone boss_monster canine caprine cat cinnamon_(undertale) comic crying dialogue dog facial_hair feline female fish flowey_the_flower goat hair horn human lagomorph lizard machine male mammal marine mettaton papyrus_(undertale) plant protagonist_(undertale) rabbit reptile rie_(artist) robot sans_(undertale) scalie skeleton tagme tears tem temmie_(undertale) toriel undertale undyne video_games 2016 anus areola balls big_breasts big_butt breasts butt butt_grab canine crossgender dog erect_nipples erection female furanh ghost greater_dog hand_on_butt human lesser_dog machine male mammal mettaton monster monster_kid napstablook nipples penetration penis protagonist_(undertale) pussy robot sex spirit undertale vaginal vaginal_penetration video_games 4boys alphys androgynous breasts commentary cyborg flowey_(undertale) food frisk_(undertale) glasses glowing glowing_eye grin hair_over_one_eye heart james_ghio large_breasts meatball medium_breasts mettaton mettaton_ex monster_girl multiple_boys multiple_girls muscle muscular_female papyrus_(undertale) pasta realistic round_eyewear sans shorts skull smile spaghetti spaghetti_and_meatballs tank_top undertale undyne blush bone clothing crossgender dress hair hi_res hotlegmeme machine mettaton papyrus_(undertale) penetration penis pussy robot sex skeleton tongue tongue_out undertale vaginal video_games blush crossgender drooling english_text female hair hi_res hotlegmeme machine mettaton pillow pillow_ride robot saliva simple_background text undertale video_games white_background black_hair disco_ball hair machine meammy mettaton robot tagme undertale video_games watermark <3 animated_skeleton blush bone comic dialogue english_text female human kissing machine male male/male mammal mettaton nsfwshamecave onomatopoeia papyrus_(undertale) protagonist_(undertale) robot skeleton sound_effects text tongue tongue_out undead undertale video_games ! <3 angry animated_skeleton blush bone clothing comic dialogue english_text human machine male mammal mettaton nsfwshamecave protagonist_(undertale) robot sans_(undertale) skeleton text undead undertale video_games <3 <3_eyes ... animated_skeleton blush bone collar dialogue english_text imminent_sex leash machine male male/male mettaton nsfwshamecave papyrus_(undertale) penis riding_crop robot skeleton sweat text undead undertale video_games whip aaron_(undertale) aircraft airplane alphys androgynous android animal_ears annoying_dog armor bad_id bad_pixiv_id black_hair blue_skin blush bone bow bowtie bread brown_hair bug closed_eyes collared_shirt commentary_request cup dogamy dogaressa doggo drinking_glass dual_persona elemental_(creature) extra_eyes fangs fire flame food food_in_mouth frisk_(undertale) ghost glasses gloves greater_dog grillby grin hat head_fins headphones highres hone_(1055890141) hood hoodie ice_cap insect_girl jerry_(undertale) lesser_dog long_sleeves mettaton mettaton_ex mob_cap monster_boy monster_girl monster_kid_(undertale) mouth_hold muffet multiple_arms multiple_boys napstablook open_mouth papyrus_(undertale) ponytail purple_skin red_hair ribbon royal_guard_01_(undertale) royal_guard_02_(undertale) sans scarf sharp_teeth shirt short_hair shorts shyren skeleton slippers smile snail spider spider_girl striped striped_shirt striped_sweater sweater teeth temmie toast toast_in_mouth tsunderplane tv_camera undertale undyne vegetoid vest vulkin yellow_skin alphys ambiguous_gender animated_skeleton asgore_dreemurr black_eyes bone brown_hair female flowey_the_flower hair human looking_at_viewer mammal mettaton mettaton_ex papyrus_(undertale) protagonist_(undertale) red_eyes sans_(undertale) skeleton toriel undead undertale undyne unknown_artist video_games burgerpants cat feline korean_text male mammal mettaton mettaton_ex pink_eyes sungho text translation_request undertale video_games clothing ghost gloves korean_text machine male mettaton napstablook pink_eyes robot spirit sungho text translation_request undertale video_games clothing english_text fangs gloves looking_at_viewer machine male mettaton mettaton_ex monochrome robot sungho text undertale video_games <3 armless black_hair boss_monster clothed clothing digital_media_(artwork) duo english_text girly hair humanoid low_res machine male male/male mettaton mettaton_neo not_furry open_mouth purple_background robot selfcest simple_background square_crossover text undertale unknown_artist video_games 2016 english_text humor just_right machine male meme mettaton robot solo text undertale unknown_artist video_games 2015 4_fingers android better_version_at_source black_hair clothing footwear grin hair hair_over_eye hi_res high_heels humanoid inviting looking_at_viewer machine mettaton mettaton_ex outstretched_hand pig_(artist) robot smile solo undertale video_games 2015 4_fingers android black_hair clothing footwear grin hair hair_over_eye hi_res high_heels humanoid inviting looking_at_viewer machine mettaton mettaton_ex outstretched_hand pig_(artist) robot smile solo undertale video_games 2015 ambiguous_gender anthro boss_monster bowl breasts chainsaw clothing digital_media_(artwork) eye_patch eyewear female fish food fruit group hat human humor inside machine mammal marine mettaton monster protagonist_(undertale) robot semi. shirt smug teeth tomato tools undertale undyne video_games weapon window ! ambiguous_gender angry clothed clothing duo english_text eyes_closed guide_lines hair hair_over_eye human humanoid insult line_art machine mammal mettaton monochrome not_furry protagonist_(undertale) robot shocked simple_background sketch text thesinnabun undertale video_games white_background yelling asgore_dreemurr blood crying mettaton muffet papyrus_(undertale) pdubbsquared protagonist_(undertale) sans_(undertale) tears toriel undertale undyne video_games anthro brown_fur burgerpants cat clothed clothing comic dialogue digital_media_(artwork) duo english_text feline fur hat machine male mammal mettaton nervous_smile pink_nose rabiscosetal robot shirt shoulder_pads simple_background smile teeth text undertale video_games white_background anthro bandage brown_fur burgerpants cat clothed clothing comic confusion dialogue digital_media_(artwork) duo english_text feline fur hand_on_hip hat machine male mammal mettaton open_mouth pants pink_nose rabiscosetal robot shirt shoulder_pads simple_background text undertale video_games white_background ... angry anthro burgerpants cat clothed clothing comic digital_media_(artwork) duo english_text feline glare hat machine male mammal mettaton open_mouth rabiscosetal robot shirt shoulder_pads simple_background text undertale video_games white_background yelling 4boys androgynous aoneko asriel_dreemurr asriel_dreemurr_(cosplay) blue_eyes blush brothers cosplay fang flower_in_mouth frisk_(undertale) heart laughing mettaton mettaton_ex mettaton_ex_(cosplay) monster_boy mother_and_son multiple_boys papyrus_(undertale) pose sans sans_(cosplay) scarf siblings skeleton sparkle spoilers toriel undertale v <3 2015 ambiguous_gender animated_skeleton anthro arachnid armless armor arthropod asgore_dreemurr beverage bone boss_monster brown_hair bush canine caprine clothed clothing cobweb dog empty_eyes eyes_closed eyewear fangs female feral fire fish flora flora_fauna flower flowey_the_flower food foot_wear fur ghost glasses gloves goat grass greater_dog grey_hair hair hair_bow hair_ribbon happy his_res holding_object hoodie horn human humanoid lesser_dog light lizard long_ears machine male mammal marine melee_weapon mettaton monster_kid muffet multi_arm multi_eye multi_limb napstablook not_furry nyapapa open_mouth papyrus_(undertale) photoshop_flowey pigtails plant polearm protagonist_(undertale) reptile ribbons robe robot sans_(undertale) scales scalie short signature silhouette skeleton sky slippers smile snow soul spear spider spikes spirit string tea teacup teapot teeth tem temmie_(undertale) tongue tongue_out toriel tree undead undertale undyne video_games weapon white_fur