alternate_universe humanoid korean_text male mettaton_(underfell) mettaton_ex_(underfell) not_furry pink_eyes red_eyes solo sungho text underfell undertale undertale_(series)
3:4 alternate_universe brown_eyes english_text hi_res humanoid male mettaton mettaton_ex not_furry outertale solo sungho text undertale undertale_(series)
2:1 aquatic clothed clothing duo english_text female fish gloves hair handwear looking_at_viewer male mettaton mettaton_ex pink_eyes ponytail red_hair sungho text undertale undertale_(series) undyne
ambiguous_gender annoying_dog_(undertale) canid canine canis chibi domestic_dog electronics english_text female feral ghost group headphones humanoid mad_dummy male mammal mettaton mettaton_ex napstablook pink_background pink_eyes shyren simple_background sparkles spirit sungho text undertale undertale_(series)
1:1 animated_skeleton bone clothing duo fangs gaster gloves hair hair_over_eye handwear humanoid machine male mettaton mettaton_ex not_furry one_eye_obstructed pink_eyes robot skeleton sungho teeth undead undertale undertale_(series)
clothed clothing digital_media_(artwork) duo femboy ghost gloves hair handwear happy humanoid machine male mettaton mettaton_ex monochrome monster not_furry open_mouth pink_eyes robot smile spirit sungho undertale undertale_(series)
4:5 clothing english_text fangs gloves handwear humanoid looking_at_viewer machine male mettaton mettaton_ex monochrome robot sungho teeth text undertale undertale_(series)
ambiguous_gender blush clothing duo eyes_closed femboy ghost heart_symbol male mettaton mettaton_ex napstablook not_furry sparkles sparkling_body sparkling_clothing spirit sungho undertale undertale_(series)
anthro burgerpants clothed clothing domestic_cat duo felid feline felis korean_text male mammal mettaton mettaton_ex pink_eyes simple_background sungho text translated undertale undertale_(series)
animated_skeleton blush bone comic dialogue english_text female frisk_(undertale) heart_symbol human kissing machine male male/male mammal mettaton mettaton_ex multiple_scenes not_furry nsfwshamecave onomatopoeia papyrus_(undertale) robot skeleton sound_effects speech_bubble text tongue tongue_out undead undertale undertale_(series)
angry animated_skeleton blush bone clothing comic dialogue english_text exclamation_point frisk_(undertale) heart_symbol human machine male mammal mettaton mettaton_ex not_furry nsfwshamecave robot sans_(undertale) skeleton text undead undertale undertale_(series)
animated_skeleton bdsm blush bodily_fluids bondage bone bound collar dialogue duo ellipsis english_text erection genitals grey_background heart_eyes heart_symbol humanoid imminent_sex leash machine male male/male mettaton mettaton_ex not_furry nsfwshamecave papyrus_(undertale) penis riding_crop robot simple_background skeleton speech_bubble submissive submissive_male sweat text undead undertale undertale_(series) whip
abstract_background ambiguous_gender android black_hair border disco_ball hair heart_symbol humanoid looking_down machine meammy mettaton mettaton_ex not_furry open_mouth robot robot_humanoid smile solo undertale undertale_(series) watermark
andromorph blush bodily_fluids crossgender digital_media_(artwork) drag_(fashion) drag_queen drooling english_text grinding hair hi_res hotlegmeme humanoid intersex machine masturbation mettaton mettaton_ex mta_crossgender mti_crossgender not_furry pillow pillow_humping robot saliva simple_background solo text undertale undertale_(series) white_background
andromorph andromorph/male andromorph_penetrated blush bone clothing dress duo erection genitals glistening hair hotlegmeme humanoid intersex intersex/male intersex_penetrated machine male male_penetrating male_penetrating_andromorph male_penetrating_intersex mettaton mettaton_ex not_furry papyrus_(undertale) penetration penis pillow robot sex skeleton tongue tongue_out undertale undertale_(series) vaginal vulva
2016 anus areola armless balls big_breasts big_butt breasts butt butt_grab canid canine canis crossgender domestic_dog erect_nipples erection female frisk_(undertale) furanh genitals ghost glistening greater_dog group hand_on_butt heart_eyes heart_symbol hi_res human humanoid lesser_dog looking_at_viewer looking_back machine male mammal mettaton mettaton_ex monster monster_kid napstablook nipples not_furry penetration penis rear_view robot sex spirit undertale undertale_(series) vaginal vaginal_penetration vegetoid vulkin vulva
2016 alphys anthro aquatic belly bite blush bodily_fluids bow_(feature) bow_tie breast_grab breasts butt claws clothing coat dialogue duo electronics embarrassed eye_patch eyewear female female/female fish fisting genital_fluids genitals glasses glistening grabbing_sheets hair hand_on_breast heart_symbol humanoid humanoid_on_anthro japanese_text kneeling lab_coat lizard machine mettaton mettaton_ex microphone nam nipple_fetish nipple_pinch nipple_play nude open_mouth penetration pinch red_hair reptile robot saliva scalie sex simple_background slightly_chubby speech_bubble text tongue topwear translated undertale undertale_(series) undyne vaginal vaginal_fisting vaginal_fluids vaginal_penetration vulva white_background
2016 animal_humanoid animated_skeleton aquatic aquatic_humanoid asgore_dreemurr blonde_hair bone boss_monster_(undertale) bovid caprine eye_patch eyewear facial_hair female fish fish_humanoid frisk_(undertale) hair horn human humanoid machine male mammal mettaton mettaton_ex papyrus_(undertale) photoshop_flowey rigorigo robot sans_(undertale) skeleton undead undertale undertale_(series) undyne
blush hair hair_over_eye humanoid kjyukinix machine metal mettaton mettaton_ex not_furry one_eye_obstructed open_mouth robot solo teeth tongue undertale undertale_(series)
2016 ;p alphys amalgamate ambiguous_gender android animated_skeleton anthro aquatic armor asgore_dreemurr asriel_dreemurr avian beard beverage bird blaster blonde_hair blue_body blue_skin bodily_fluids bone boss_monster_(undertale) bovid canid canine canis cape caprine cellphone chara_(undertale) clothing coffin container crown cup deity dessert dinosaur domestic_dog drooling electronics endogeny evil_grin eye_patch eyewear facial_hair female fire fish flowey_the_flower food footwear frisk_(undertale) gaster_blaster gills glasses glistening goat group hair headgear heart_symbol hi_res hoodie horn hot_dog human humanoid knife lemon_bread lizard long_ears long_hair looking_at_viewer lynxgriffin machine magic_user male mammal melee_weapon memoryhead mettaton mettaton_ex mettaton_neo pastry phone photoshop_flowey pie polearm ponytail prehistoric_species reaper_bird reptile robe robot royalty saliva sans_(undertale) scalie shoes silhouette simple_background skeleton smile snowdrake's_mother soul spear tea tea_cup television topwear toriel undead undertale undertale_(series) undyne undyne_the_undying weapon white_background wings yellow_eyes young
2016 5:4 anal anal_penetration balls blush erection femboy gaiki genitals glistening grey_background hair humanoid machine male mettaton mettaton_ex not_furry open_mouth oral penetration penis robot simple_background solo soulplay tentacles translucent translucent_tentacles undertale undertale_(series)
absurd_res alternate_universe breasts crossgender demon female glistening hair hi_res humanoid lnemdave mammal membrane_(anatomy) membranous_wings mettaton mettaton_(underfell) mettaton_ex_(underfell) not_furry simple_background solo standing underfell undertale undertale_(series) wings
2016 4:3 ambiguous_gender anthro bente36 blue_clothing blue_sweater blue_topwear chara_(undertale) clothing english_text female frisk_(undertale) glistening green_clothing green_sweater green_topwear group human machine male mammal mettaton mettaton_ex pattern_clothing pattern_sweater pattern_topwear robot striped_clothing striped_sweater striped_topwear stripes sweater text topwear undertale undertale_(series)
4:5 android anthro asgore_dreemurr ball_gown beard beast_(disney) beauty_and_the_beast belle_(beauty_and_the_beast) boss_monster_(undertale) bovid caprine cosplay crossover dancing disney elemental_creature facial_hair flora_fauna flowey_the_flower group hi_res horn long_ears machine male male/male mammal mature_anthro mature_male mettaton mettaton_ex plant qubelord robot simple_background undertale undertale_(series)
anal anal_penetration animated anthro anus asgore_dreemurr balls beard blonde_hair bodily_fluids boss_monster_(undertale) bovid butt caprine crossgender cum cum_in_ass cum_inside dialogue duo english_text erection eyewear face_fucking faceless_character faceless_male facial_hair feet fellatio female female_penetrated flash foot_fetish foot_play footjob forced forced_oral full_nelson genital_fluids genitals glasses hair humanoid humanoid_on_anthro interactive irrumatio machine male male/female male_penetrating male_penetrating_female mammal mettaton mettaton_ex muscular muscular_male music nipples oral oral_penetration orgasm pecs penetration penile penis penis_in_mouth perineum robophilia robot sex sound text tvcomrade undertale undertale_(series) vulva
1:1 blush bodily_fluids bone crossgender cum cum_in_vagina cum_inside duo erection female female_penetrated genital_fluids genitals glistening hair humanoid machine male male/female male_penetrating male_penetrating_female mettaton mettaton_ex not_furry papyrus_(undertale) penetration penis robot sex skeleton smile undead undertale undertale_(series) vaginal vulva
5:8 android anthro armpit_hair asgore_dreemurr beard bedroom_eyes belly_hair blonde_hair body_hair boss_monster_(undertale) bovid bulge caprine chest_hair duo facial_hair hair half-closed_eyes hi_res horn leg_hair lying machine male mammal mature_anthro mature_male mettaton mettaton_ex muscular muscular_male narrowed_eyes nipples on_back pecs pique_raj robot seductive undertale undertale_(series) weapon
2016 android glistening hair hair_over_eye humanoid machine male mettaton mettaton_ex not_furry one_eye_obstructed pose robot robot_humanoid sibsy solo undertale undertale_(series)
black_hair blush breasts clothed clothing digital_media_(artwork) female glistening hair hair_over_eye hehensfw humanoid lol_comments looking_down machine mettaton mettaton_ex not_furry one_eye_obstructed purple_eyes robot simple_background smile solo undertale undertale_(series)
4:3 ambiguous_gender animate_inanimate battered black_hair cousins_(lore) doll dummy electronics empty_eyes family ghost group hair hair_over_eye haunted_house headphones humanoid humor machine mad_dummy male meme metal mettaton mettaton_ex moofrog_(artist) napstablook nightmares_fear_factory_(meme) not_furry one_eye_obstructed open_mouth robot scared spirit teeth undertale undertale_(series)
2016 5_fingers absurd_res alphys animated_skeleton anterior_nasal_aperture aquatic asgore_dreemurr beard black_and_white blush bodily_fluids bone boots boss_monster_(undertale) bovid breasts caprine clothing coat comic container cup dialogue digital_media_(artwork) ear_fins english_text eye_patch eyebrows eyewear facial_hair female fin fingers fish footwear glasses hair heart_symbol hi_res holding_character horn hotlegmeme humanoid humor lab_coat leg_wrap lizard long_ears long_image machine male mammal mettaton mettaton_ex monochrome open_mouth papyrus_(undertale) ponytail profanity reptile robot sans_(undertale) scalie sharp_teeth shoes short_hair simple_background skeleton speech_bubble sweat tall_image teeth text topwear undead undertale undertale_(series) undyne
16:9 ambiguous_gender clothing cowboy_hat disco disco_ball drag_(fashion) duo floodlight fog frisk_(undertale) glistening gun hat headgear headwear hi_res human lights machine mammal mettaton mettaton_ex nightclub not_furry pdubbsquared performance platform ranged_weapon robot soul stage umbrella undertale undertale_(series) wallpaper weapon widescreen
asgore_dreemurr beard blonde_hair boss_monster_(undertale) bovid caprine christmas_decorations christmas_lights comic english_text facial_hair flower frisk_(undertale) hair horn human long_ears machine mammal mettaton mettaton_ex plant plumfsh robot signature text undertale undertale_(series)
2016 ambiguous_gender clothed clothing crossdressing dress duo femboy ghost glistening humanoid machine male mettaton mettaton_ex napstablook not_furry robot simple_background skellymor spirit undertale undertale_(series) white_background
alphys amalgarn anthro brown_eyes buckteeth clothing coat comic dialogue dinosaur duo english_text eyewear female glasses hi_res lab_coat looking_at_viewer machine male mettaton mettaton_ex monster prehistoric_species profanity question_mark reptile robot scalie screwdriver smile smirk teeth text tools topwear undertale undertale_(series) working
anthro asgore_dreemurr beard blush boss_monster_(undertale) bovid caprine dongoverlord duo eyeshadow facial_hair flower glistening horn lipstick long_ears machine makeup male male/male mammal mature_anthro mature_male mettaton mettaton_ex plant robot simple_background size_difference thick_thighs tongue undertale undertale_(series)
bone crossgender duo erection female genitals hair heart_symbol hotlegmeme humanoid machine male male/female male_penetrating mettaton mettaton_ex not_furry open_mouth penetration penis robot romantic romantic_couple sans_(undertale) sex skeleton undead undertale undertale_(series) vaginal vaginal_penetration vulva
anthro carrot clothed clothing cosplay crossdressing femboy food food_fetish food_play glistening legwear leotard low_res machine male mettaton mettaton_ex pink_clothing pink_leotard plant robot simple_background solo tights undertale undertale_(series) unknown_artist vegetable white_background
2015 ambiguous_gender boots clothing drag_(fashion) duo electronics eyes_closed footwear frisk_(undertale) glistening hair heart_symbol hi_res high_heeled_boots high_heels human humanoid lights machine mammal mettaton mettaton_ex microphone not_furry performance robot shoes singing stage undertale undertale_(series) walkingmelonsaaa
16:9 2016 2d_animation alphys ambiguous_gender animated anthro blood bodily_fluids chara_(undertale) death duo_focus female fight frame_by_frame frisk_(undertale) ghost group huge_filesize human large_group lizard long_playtime machine male mammal mettaton mettaton_ex mettaton_neo music napstablook nchproductions reptile robot sans_(undertale) scalie sound spirit transformation undertale undertale_(series) video widescreen
2016 android electronics graphite_(artwork) humanoid jrvanesbroek looking_at_viewer machine male mettaton mettaton_ex microphone monochrome not_furry robot robot_humanoid sketch solo traditional_media_(artwork) undertale undertale_(series)
1:1 2016 aisan_sousak android black_hair clothing glistening gloves hair hair_over_eye handwear humanoid machine male mettaton mettaton_ex not_furry one_eye_obstructed purple_eyes robot robot_humanoid short_hair shoulder_pads smile solo undertale undertale_(series)
16:9 2016 5_eyes alphys amalgamate animated_skeleton anthro aquatic asgore_dreemurr asriel_dreemurr bone boss_monster_(undertale) bovid caprine chara_(undertale) clothing coat digital_media_(artwork) endogeny eyewear fight fire fish frisk_(undertale) fur glasses goat group hair hallway heart_symbol horn human humanoid lab_coat lemon_bread magic mammal melee_weapon memoryhead mettaton mettaton_ex muffet multi_eye papyrus_(undertale) pdubbsquared reaper_bird red_hair sans_(undertale) sharp_teeth skeleton snowdrake's_mother soul_(undertale) teeth topwear toriel undead undertale undertale_(series) undyne weapon white_body white_fur widescreen
2016 5_eyes accessory alphys alternative_fashion ambiguous_gender android animal_humanoid animated_skeleton annoying_dog_(undertale) anthro aquatic aquatic_humanoid arachnid arachnid_humanoid armless arthropod arthropod_humanoid asgore_dreemurr asriel_dreemurr beverage black_hair bone boss_monster_(undertale) bovid bow_(feature) bow_accessory bow_ribbon brown_hair canid canine canis caprine child clothing crown dessert digital_media_(artwork) domestic_dog doughnut english_text eye_patch eyewear facial_hair female fish fish_humanoid food frisk_(undertale) fur ghost glasses glistening goat group hair hair_accessory hair_bow hair_ribbon hat headgear headwear heart_symbol hi_res horn human humanoid j-fashion large_group lizard long_ears long_hair machine male mammal mature_anthro mature_female mature_male mettaton mettaton_ex monster_kid muffet multi_eye napstablook ouji_(fashion) papyrus_(undertale) pastry pokey_(pixiv) ponytail red_eyes reptile ribbons robe robot sans_(undertale) scalie short_hair skeleton soul_(undertale) spider_humanoid spirit tea tem temmie_(undertale) text toriel twin_bows twin_hair_bows undead undertale undertale_(series) undyne white_body white_fur young young_ambiguous young_anthro young_female young_human young_male
5:8 absurd_res alphys animated_skeleton annoying_dog_(undertale) anthro aquatic asgore_dreemurr asriel_dreemurr_(god_form) blonde_hair bone boss_monster_(undertale) bovid canid canine canis caprine chainsaw clothed clothing crossover domestic_dog doom_(series) english_text eye_patch eyewear female fish frisk_(undertale) glasses glowing group hair heart_symbol hi_res horn human humanoid id_software jerry_(undertale) jewelry knife lizard long_ears machine male mammal melee_weapon mettaton mettaton_ex microsoft mountain necklace papyrus_(undertale) parody polearm power_tool reptile robot sans_(undertale) scalie signature skeleton smonkito text tools toriel trident undead undertale undertale_(series) undyne undyne_the_undying weapon
2016 5_eyes :3 aaron_(undertale) absolutely_everyone accessory adopted_(lore) adoptive_brother_(lore) adoptive_father_(lore) adoptive_mother_(lore) adoptive_sibling_(lore) aircraft airplane alcohol alligator alligatorid alphys amalgamate ambiguous_gender amphibian anatid angry animal_humanoid animate_inanimate animated_skeleton annoying_dog_(undertale) anseriform antennae_(anatomy) anthro apple apron aquatic arachnid arachnid_humanoid armless armor arthropod arthropod_humanoid asgore_dreemurr asian_mythology asriel_dreemurr asriel_dreemurr_(god_form) astigmatism aunt_(lore) avian ball baseball_cap beak bear beef beverage bird bird_that_carries_you_over_a_disproportionately_small_gap bivalve blue_clothing blue_sweater blue_topwear blush bodily_fluids bone book boots boss_monster_(undertale) bottomwear bound bovid bow_(feature) bow_tie box bratty_(undertale) breasts brother_(lore) brothers_(lore) bubble buckteeth bunbun_npc_(undertale) burger burgerpants buttercup_(flower) butterfly cactus candy canid canine canis canon_couple cape caprine carrot catty_cattenheimer cellphone cephalopod chara_(undertale) character_collage charles_(undertale) cheese child chilldrake chips_(food) cider cinnamon_(undertale) cinnamon_bun clam clam_girl_(undertale) clam_guy_(undertale) clothed clothing coat coleoid container cookware cousins_(lore) cowboy_hat crocodilian crown cyclops dad_slime_(undertale) dagger dairy_products dancewear date deer demon dessert diamond_boy_1 diamond_boy_2 diamond_receptionist_(undertale) dinosaur disembodied_tail dogamy dogaressa doggo_(undertale) doll domestic_cat domestic_dog domestic_pet doodlebog_(undertale) doughnut dragon dragon_business_dude_(undertale) duck dummy dummy_(undertale) east_asian_mythology echo_flower echo_flower_explainer elder_puzzler_(undertale) electronics elemental_creature elemental_humanoid empty_eyes endogeny english_text eulipotyphlan everyman evil_grin eye_patch eyelashes eyeless eyes_closed eyewear fabric_creature faceless family fangs father_(lore) father_and_child_(lore) father_and_son_(lore) faun_(undertale) feathers felid feline felis female female/female ferry_(undertale) ficus_licker final_froggit fire fire_creature fire_humanoid fish fish_receptionist_(undertale) flora_fauna flower flower_creature flowey_the_flower food food_creature footwear for_a_head frisk_(undertale) frog froggit fruit frying_pan fuku_fire fully_clothed fungi_fauna fungus fur furries_with_pets gaster gaster_blaster gaster_follower_1 gaster_follower_2 gaster_follower_3 gastropod gerson ghost gift_bear_(undertale) gift_box gills glamburger glasses gloves glyde_(undertale) goat goner_kid greater_dog grillby group gun gyftrot hair hair_accessory hair_over_eye hair_ribbon hand_creature hand_receptionist_(undertale) handwear happy hat head_tuft headgear headwear heart_symbol heats_flamesman helmet hi_res high_heeled_boots high_heels holding_object hoodie horn hot_dog hug human humanoid husband husband_and_wife ice ice-e ice_cap ice_cream ice_wolf_(undertale) inanimate_object insect insect_humanoid japanese_mythology jerry_(undertale) kerchief ketchup king kitchen_utensils knife knight_knight lab_coat lady_garf_(undertale) lagomorph large_group legwear lemon_bread lepidopteran leporid lesser_dog library_lizard_(undertale) library_loox lion liquid lizard long_ears looking_at_viewer loox loren_(undertale) lying machine mad_dummy madjick male male/female male/male mammal married_couple meat melee_weapon memoryhead metal mettaton mettaton_ex migosp migospel mineral_fauna moldbygg moldessa moldsmal mole_(animal) mollusk monster_kid mother_(lore) mother_and_child_(lore) mother_and_father_(lore) mother_and_son_(lore) mouse mtt_resort_janitor muffet muffet's_pet multi_arm multi_eye multi_limb murid murine muscular mushroom music_statue_(undertale) mustard mythological_creature mythological_scalie mythology napstablook nicecream_man nonbinary_(lore) noodles nude object_head octopodiform one_eye_obstructed oni oni_(undertale) onionsan open_mouth outline pantherine pants papyrus_(undertale) parent_(lore) parent_and_child_(lore) parent_and_son_(lore) parfait_(dessert) partially_clothed pasta pastry pattern_clothing pattern_sweater pattern_topwear phone photoshop_flowey pie pigtails plant polearm ponytail potato_chips prehistoric_species prince pumpkin pyrope qc_(undertale) queen rabbit rabbit_innkeeper rabbit_innkeeper's_child rabbit_kid_(undertale) ranged_weapon reaper_bird reptile rg01_(undertale) rg02_(undertale) ribbons river_person_(undertale) robe robot rock rock_(undertale) rodent rope royalty rubber_duck sad sad_dragon_(undertale) salad sandwich_(food) sans_(undertale) sauce scalie scarf scarf_lady_(undertale) screen screen_face screen_head seahorse sharp_teeth shield shirt shoes shoulder_pads shyren sibling_(lore) sideways_baseball_cap signature sister_(lore) sisters_(lore) skateboard_girl skeleton skirt slime slime_(blob) slug smile snail snail_guy_(undertale) snow snow_creature snowdrake snowdrake's_mother snowman snowman_(species) snowman_(undertale) so_sorry_(character) son_(lore) soul soul_(undertale) spaghetti spear spider_donut spider_humanoid spikes spirit star steak stick striped_clothing striped_sweater striped_topwear stripes suspension sweater sword syngnathid syngnathiform tea tears teeth tem temmie_(undertale) tennis_ball text text_on_clothing text_on_hat text_on_headgear text_on_headwear thundersnail_(undertale) tongue tongue_out tools top_hat topwear toriel toy tsundere_cactus_(deltarune) tsunderplane tuft turtle tutu undead undertale undertale_(series) undyne unknown_species vegetable vegetoid vehicle vulkin watching_man weapon whimsalot whimsun wife wings wisp_business_dude_(undertale) wizard_hat wolf woshua yokai young young_ambiguous young_anthro young_female young_human young_male znmai
anthro brown_body brown_fur burgerpants crossover digital_media_(artwork) dingaling_productions domestic_cat dworven_(artist) felid feline felis full-length_portrait fur fusion group lisa_the_painful low_res machine male mammal mettaton mettaton_ex monster portrait robot simple_background the_furniture_pervert_(character) undertale undertale_(series) white_background
1:1 2016 animated_skeleton bone dialogue duo english_text humanoid machine male mettaton mettaton_ex not_furry papyrus_(undertale) robot robynrot skeleton text undead undertale undertale_(series)
1:1 2016 animated_skeleton bone dialogue duo english_text humanoid machine male mettaton mettaton_ex not_furry papyrus_(undertale) robot robynrot skeleton text undead undertale undertale_(series)
1:1 2016 animated_skeleton bone clothed clothing dialogue digital_media_(artwork) duo english_text humanoid machine male mettaton mettaton_ex not_furry papyrus_(undertale) robot robynrot skeleton text undead undertale undertale_(series)
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