ambiguous_gender animated_skeleton anthro blush bone burgerpants clothed clothing dialogue digital_media_(artwork) domestic_cat duo english_text felid feline felis femboy glistening hair hi_res humanoid machine male male/male mammal mettaton mettaton_ex napstablook open_mouth papyrus_(undertale) robot sans_(undertale) skeleton smile text undead undertale undertale_(series)
alternate_universe bodily_fluids clothed clothing digital_media_(artwork) duo fan_character femboy hair hi_res humanoid long_hair machine male male/male mettaton mettaton_(underfell) mettaton_ex mettaton_ex_(underfell) multi_arm multi_eye multi_limb not_furry open_mouth robot sharp_teeth simple_background square_crossover tears teeth underfell undertale undertale_(series) unknown_artist
anthro burgerpants clothed clothing dialogue digital_media_(artwork) domestic_cat drugs duo english_text felid feline felis femboy fur glistening hair hat headgear headwear humanoid long_hair machine male mammal marijuana mettaton mettaton_ex open_mouth robot simple_background smile smoking text undertale undertale_(series) unknown_artist
animal_humanoid aquatic aquatic_humanoid breasts cephalopod cephalopod_humanoid clothed clothing colored_fire duo elemental_creature eyelashes female female/female fire fire_creature fuku_fire green_fire humanoid humanoid_on_humanoid looking_at_viewer mollusk mollusk_humanoid mouthless pseudo_hair school_uniform simple_background skateboard_girl tentacle_hair tentacles undertale undertale_(series) uniform unknown_artist
2016 bulge butt butt_shot clothed clothing digital_media_(artwork) gaiki glistening humanoid latex machine male mettaton mettaton_ex not_furry rear_view robot simple_background solo undertale undertale_(series)
blush clothed clothing digital_media_(artwork) duo femboy genitals hair heart_symbol hotlegmeme humanoid machine male male/male masturbation mettaton mettaton_ex mettaton_neo monochrome not_furry penile penile_masturbation penis robot selfcest sex simple_background smile square_crossover undertale undertale_(series)
blush breasts crossgender drag_(fashion) drag_queen duo female genitals hair hi_res hotlegmeme machine male male/female mettaton mettaton_neo not_furry robot sex simple_background solo_focus undertale undertale_(series) vulva
alpha_channel alphys alternate_color ambiguous_gender animal_humanoid animated_skeleton aquatic aquatic_humanoid armor arxielle asgore_dreemurr asriel_dreemurr beard bone boss_monster_(undertale) bovid cape caprine chara_(undertale) clothed clothing cputale crown cybernetics cyborg digital_media_(artwork) electronics elemental_creature facial_hair female fish fish_humanoid flora_fauna flower flowey_the_flower frisk_(undertale) fur ghost gloves goat group hair handwear headgear headphones hoodie horn human humanoid low_res machine male mammal markings melee_weapon mettaton mettaton_ex microphone napstablook papyrus_(undertale) pixel_(artwork) plant polearm red_hair reptile robot sans_(undertale) scalie scarf simple_background skeleton skull smile spear spirit topwear toriel transparent_background undead undertale undertale_(series) undyne weapon white_body white_fur
4:5 alternate_universe ambiguous_gender clothed clothing digital_media_(artwork) duo femboy ghost hair humanoid legwear looking_at_viewer machine male mettaton_(outertale) mettaton_ex_(outertale) napstablook_(outertale) not_furry outertale robot simple_background smile space spirit star tongue undertale undertale_(series) unknown_artist
black_and_white blush bone butt clothing dress duo femboy hair heart_symbol hotlegmeme machine male male/male mettaton mettaton_ex monochrome not_furry papyrus_(undertale) sex simple_background skeleton undead undertale undertale_(series) white_background
abs black_and_white bodily_fluids cum erection femboy genital_fluids genitals glistening hair hair_over_eye hi_res hotlegmeme humanoid kneeling male mettaton mettaton_ex monochrome muscular muscular_femboy muscular_humanoid muscular_male not_furry one_eye_obstructed penis penis_poking_out simple_background solo undertale undertale_(series) white_background
4threset aaron_(undertale) alphys ambiguous_gender amphibian animal_humanoid animate_inanimate animated_skeleton anthro aquatic aquatic_humanoid arachnid arachnid_humanoid armless arthropod arthropod_humanoid asgore_dreemurr asriel_dreemurr beard blonde_hair bone boss_monster_(undertale) bovid canid canine canis caprine chara_(undertale) domestic_cat domestic_dog elemental_creature equid equine facial_hair felid feline felis female fire fire_creature fish fish_humanoid flora_fauna flowey_the_flower frisk_(undertale) frog gaster ghost goat grillby group hair hi_res horn horse human humanoid insect lizard long_ears machine mad_dummy male mammal mettaton monster_kid muffet napstablook papyrus_(undertale) plant reptile robot sans_(undertale) scalie shyren skeleton spider_humanoid spirit tem temmie_(undertale) toriel undead undertale undertale_(series) undyne young young_ambiguous young_anthro young_human
1:2 2015 alphys ambiguous_gender armless before_and_after blue_body blue_skin bodily_fluids boots breasts clothed clothing comic crying cybernetics cyborg digital_media_(artwork) eyewear female footwear glasses group happy hi_res human humor isabunnie machine mammal mettaton mettaton_ex mirror monster monster_kid mtt_brand_legs open_mouth prosthetic prosthetic_arm prosthetic_limb robotics sad scalie shoes simple_background tears teeth thought_bubble tongue tongue_out undertale undertale_(series) undyne what_has_science_done white_background wide_eyed yelling
abstract_background ambiguous_gender crossover earthbound_(series) electronics low_res lucas_(earthbound) machine mettaton microphone nintendo not_furry robot sean_hicks signature solo undertale undertale_(series)
clothing digital_media_(artwork) footwear gloves hair handwear high_heels machine male mettaton mettaton_ex not_furry pink_hair riifucat robot shoes solo undersail undertale undertale_(series)
chainsaw clothing crossgender digital_media_(artwork) hair hotlegmeme machine mettaton mettaton_neo power_tool robot simple_background solo tools undertale undertale_(series)
2016 absurd_res anal anal_penetration animated_skeleton bone caught_in_the_act comic dialogue duo english_text erection genitals handjob hi_res humor kissing long_image machine male male/male male_penetrated male_penetrating male_penetrating_male mettaton mettaton_ex monochrome nsf-sl4ughtermelon papyrus_(undertale) penetration penile penis robot sex skeleton speech_bubble tall_image text undead undertale undertale_(series)
2016 anal anal_penetration animated_skeleton blush bone dialogue digital_media_(artwork) duo english_text heart_symbol machine male male/male male_penetrated male_penetrating male_penetrating_male mettaton mettaton_ex not_furry nsf-sl4ughtermelon papyrus_(undertale) penetration robot sex skeleton text undead undertale undertale_(series)
absurd_res ambiguous_gender animated_skeleton annoying_dog_(undertale) aquatic armor blossyay bone canid canine clothed clothing comic dialogue english_text fish flower flowey_the_flower frisk_(undertale) hi_res hoodie human humor long_image looking_back machine mammal mettaton mettaton_ex monochrome plant pose robot sans_(undertale) simple_background skeleton sparkles tall_image text topwear undead undertale undertale_(series) undyne white_background
android bra cat_ear_panties cat_keyhole_bra cat_lingerie cleavage_cutout clothed clothing crossdressing cutout dakimakura dakimakura_design femboy frilly frilly_bra frilly_clothing frilly_underwear hair hair_over_eye hi_res humanoid keyhole_bra keyhole_clothing keyhole_underwear lingerie lying machine male metallic_body mettaton mettaton_ex not_furry on_back one_eye_obstructed panties robot side-tie_panties simple_background solo training_bra undertale undertale_(series) underwear underwear_only vigilserus white_background white_bra white_clothing white_panties white_underwear
2016 4:3 alphys ambiguous_gender animal_humanoid anthro aquatic aquatic_humanoid asgore_dreemurr ball basketball basketball_(ball) beard blonde_hair boss_monster_(undertale) bovid brown_hair caprine claws clothed clothing eye_patch eyewear facial_hair female fish fish_humanoid frisk_(undertale) fur ghost glasses group hair horn human humanoid lizard machine male male_focus mammal mettaton muscular muscular_male napstablook open_clothing open_shirt open_topwear outside papyrus_(undertale) paws plant red_hair reptile robot sans_(undertale) scalie semabluezero shirt spirit tail topwear toriel tree undead undertale undertale_(series) undyne white_body white_fur
breasts colored_nails crossgender drag_(fashion) drag_queen female hair machine mettaton mettaton_neo mtf_crossgender nails not_furry portrait robot simple_background solo three-quarter_portrait undertale undertale_(series) wide_hips z41d
2016 ambiguous_gender brown_hair chara_(undertale) comic dialogue english_text ghost hair hi_res human machine male mammal mettaton mettaton_ex napstablook robot shoepants spirit text undertale undertale_(series) yogurtyard_(artist)
alphys android anthro anthro_penetrated anus black_background blush bodily_fluids boots clothed clothing cum cum_in_vagina cum_inside duo english_text erection eyes_closed female female_on_humanoid female_penetrated filthygum footwear genital_fluids genitals glistening happy happy_sex hi_res humanoid humanoid_on_anthro humanoid_penetrating humanoid_penetrating_anthro interspecies legwear lizard machine male male/female male_on_anthro male_penetrating male_penetrating_female metal_penis mettaton mettaton_ex nude open_mouth penetration penile penile_penetration penis penis_in_vagina reptile robot scalie sex shoes simple_background smile tears teeth text tongue tongue_out undertale undertale_(series) vaginal vaginal_penetration yellow_body yellow_skin
android areola big_breasts breasts colored_nails crossgender english_text erect_nipples female furanh glistening gradient_background hi_res humanoid kneeling machine mettaton mettaton_ex nails nipples not_furry robot simple_background solo text undertale undertale_(series) url
android areola big_breasts big_penis breasts crossgender duo erect_nipples erection female foreskin frisk_(undertale) furanh genitals glistening heart_eyes heart_symbol hi_res human human_on_humanoid humanoid interspecies looking_at_genitalia looking_at_penis machine male mammal mettaton mettaton_ex nipples not_furry penis robot solo_focus text undertale undertale_(series) url
android areola big_breasts big_penis breast_play breasts crossgender duo erect_nipples erection fellatio female foreskin frisk_(undertale) furanh genitals glistening heart_symbol hi_res human human_on_humanoid humanoid interspecies machine male mammal mettaton mettaton_ex nipples not_furry oral penile penis robot sex solo_focus speech_bubble titfuck undertale undertale_(series)
absurd_res alphys anthro aquatic big_butt blush butt comic english_text female fish ghost happstablook hi_res hotlegmeme lizard long_image machine male mettaton mettaton_ex monochrome reptile robot scalie spirit tall_image text undertale undertale_(series) undyne wide_hips
1_eye 5_eyes 6_arms >_< aaron_(undertale) absolutely_everyone accessory aircraft airplane alligator alligatorid alphys amalgamate ambiguous_gender amphibian angry animal_humanoid animated_skeleton annoying_dog_(undertale) anthro aquatic arachnid armless armor arthropod asgore_dreemurr asriel_dreemurr astigmatism audio_cassette avian axe beak bear beard beverage big_mouth_(undertale) bird bird_that_carries_you_over_a_disproportionately_small_gap black_hair black_nose black_sclera blonde_hair blue_eyes blush blush_stickers bodily_fluids bone boss_monster_(undertale) bovid bow_(feature) bow_accessory bow_in_front bow_ribbon bow_tie box bratty_(undertale) brown_body brown_fur bunbun_npc_(undertale) burgerpants business_manticore_(undertale) butterfly canid canine canis cape caprine carrot cassette_tape cat_humanoid catty_cattenheimer cellphone cephalopod chara_(undertale) charles_(undertale) cheek_tuft cheese chibi chilldrake clam_girl_(undertale) clam_guy_(undertale) clip_accessory clothed clothing coleoid container cricetid crocodilian crown crying dad_slime_(undertale) dairy_products decorated_bow demon dessert diamond_boy_1 diamond_boy_2 diamond_receptionist_(undertale) dinosaur disembodied_head disembodied_tail dogamy dogaressa doggo_(undertale) domestic_cat domestic_dog domestic_pet doodlebog_(undertale) double_v_sign dragon_business_dude_(undertale) dress_lion_(undertale) drunk_bun_(undertale) dummy_(undertale) echo_flower echo_flower_explainer elder_puzzler_(undertale) electronics elemental_creature endogeny everyman extyrannomon_(artist) eyelashes eyes_closed eyewear facial_hair facial_tuft faun_(undertale) felid felid_humanoid feline feline_humanoid felis female ferry_(undertale) ficus_licker final_froggit fire fire_creature fish fish_receptionist_(undertale) flora_fauna flower flowey_the_flower food fool's_hat footwear fox_head_(undertale) frisk_(undertale) frog froggit fruit fuku_fire fully_clothed fungi_fauna fungus fur furries_with_pets gaster gastropod gerson gesture gift_bear_(undertale) gift_bow gift_box glamburger glasses glyde_(undertale) goat goner_kid goo_creature greater_dog green_body green_hair green_scales grillby grin group gyftrot hair hair_accessory hair_bow hair_bun hair_ribbon hair_tie hairclip hamster hand_gesture hand_receptionist_(undertale) happy hat head_tuft headgear headphones headwear heart_accessory heart_bow heart_hair_accessory heart_nose heart_symbol heats_flamesman helmet hi_res holding_axe holding_beverage holding_cellphone holding_food holding_knife holding_object holding_phone holding_stick holding_weapon horn hot_dog hot_dog_harpy humanoid ice ice-e ice_cap ice_wolf_(undertale) inner_ear_fluff insect jerry_(undertale) ketchup king knife knight_knight lady_garf_(undertale) lagomorph large_group lemon_bread lepidopteran leporid lesser_dog library_lizard_(undertale) library_loox lion long_ears loox loren_(undertale) lying mad_dummy madjick magnifying_glass male mammal mammal_humanoid melee_weapon memoryhead mettaton mew_mew_(undertale) mew_mew_kissy_cutie migosp migospel moldbygg moldessa moldsmal mollusk monster_kid mouse mtt_resort_janitor muffet muffet's_pet multi_arm multi_eye multi_limb murid murine mushroom nacarat_jester napstablook nervous nicecream_man octopodiform oculama one_eye_closed oni_(undertale) onionsan open_mouth open_smile orange_hair outline pantherine papyrus_(undertale) parallel_clips parsnik pastry pet_rock_(undertale) phone pie plant plant_antlers politics_bear_(undertale) ponytail prehistoric_species pumpkin punk_hamster_(undertale) purple_body purple_fur purple_nose pyrope qc_(undertale) rabbit rabbit_innkeeper rabbit_kid_(undertale) ragel_(undertale) reaper_bird red_bird_(undertale) red_eyes red_hair reptile rg01_(undertale) rg02_(undertale) ribbons river_person_(undertale) rock rock_(undertale) rodent royalty sad_dragon_(undertale) sans_(undertale) scales scalie scarf scarf_lady_(undertale) scarf_mouse seahorse shambling_mass sharp_teeth shyren signature sitting skateboard_girl skeleton slime slug smile smoking snail snail_guy_(undertale) snowdrake snowdrake's_father snowdrake's_mother snowman so_sorry_(character) sparkles sparkling_eyes spider spiral spiral_eyes spiral_oculama starburst_pupils stick sunglasses sweat syngnathid syngnathiform tears teeth tem temmie_(undertale) text text_on_clothing text_on_hat text_on_headgear text_on_headwear thundersnail_(undertale) tongue tongue_out topless toriel tsunderplane tuft turtle twin_bows twin_hair_bows ugly_fish_(undertale) undead undertale undertale_(series) undyne unknown_species v_sign vegetable vegetoid vehicle vulkin watching_man weapon whimsalot whimsun white_body white_fur wink wisp_business_dude_(undertale) wolf woshua yellow_sclera
1:1 :o android bust_portrait cubewatermelon gradient_background hair hair_over_eye humanoid icon low_res machine male mettaton mettaton_ex not_furry one_eye_obstructed open_mouth portrait robot robot_humanoid simple_background solo surprised undertale undertale_(series)
1:1 android bust_portrait cubewatermelon gradient_background hair hair_over_eye half-closed_eyes humanoid icon low_res machine mettaton mettaton_ex narrowed_eyes not_furry one_eye_obstructed portrait robot robot_humanoid simple_background smile smug solo undertale undertale_(series)
aaron_(undertale) absolutely_everyone aircraft airplane alphys amalgamate ambiguous_gender amphibian animated_skeleton annoying_dog_(undertale) anthro aquatic arachnid armless arthropod asgore_dreemurr asriel_dreemurr avian bear beard bird black_background blonde_hair bone boss_monster_(undertale) bovid box bunbun_npc_(undertale) burgerpants butterfly canid canine canis cape caprine cephalopod character_collage chilldrake clothed clothing coleoid container demon dinosaur dogamy dogaressa doggo_(undertale) domestic_cat domestic_dog domestic_pet dummy_(undertale) elemental_creature endogeny english_text facial_hair faun_(undertale) felid feline felis female fire fire_creature fish flora_fauna flower food footwear frisk_(undertale) frog froggit fuku_fire fully_clothed fungi_fauna fungus fur furries_with_pets gaster gastropod gift_box goat greater_dog grillby group gyftrot hair hat headgear headwear heart_symbol heats_flamesman hi_res holding_object holding_plate horn human humanoid ice_cap ice_wolf_(undertale) insect lagomorph large_group lemon_bread lepidopteran leporid lesser_dog lion loox mad_dummy male mammal mettaton mettaton_ex moldsmal mollusk monster_kid mouse muffet murid murine mushroom napstablook nicecream_man octopodiform onionsan pantherine papyrus_(undertale) plant plate ponytail prehistoric_species pyrope rabbit ragel_(undertale) reptile rg01_(undertale) rg02_(undertale) river_person_(undertale) rodent sans_(undertale) scalie seahorse shyren simple_background skateboard_girl skeleton slug snail snowdrake snowman spider syngnathid syngnathiform tem temmie_(undertale) text thundersnail_(undertale) toriel tsunderplane undead undertale undertale_(series) undyne unknown_artist unknown_species vegetable vegetoid vehicle vulkin white_body white_fur wolf woshua
anthro biorobo bodily_fluids burgerpants clothed clothing desk dialogue english_text felid fire furniture ghost group happstablook hi_res machine mammal mettaton napstablook pyrope robot shirt spirit sweat table text text_on_clothing text_on_shirt text_on_topwear topwear undertale undertale_(series) vulkin
1:1 2016 anthro asgore_dreemurr beard black_hair black_sclera blonde_hair blush boss_monster_(undertale) bovid camera_view canon_couple caprine clothed clothing facial_hair female fur group hair hi_res horn kissing long_ears machine male mammal mature_anthro mature_female mature_male mettaton mettaton_ex mustache photobomb recording red_eyes robot satouiro toriel undertale undertale_(series) white_body white_fur
absurd_res alphys blush clothing comic dialogue dinosaur duo eating embarrassed english_text eyewear female food furniture glasses hi_res humor long_image machine male mettaton monochrome popcorn prehistoric_species reptile restricted_palette robot scalie screaming simple_background sitting sofa sound_effects tall_image text undertale undertale_(series) unknown_artist white_background
breasts crossgender duo female hair humanoid machine male mettaton mettaton_neo not_furry papyrus_(undertale) robot source_request text undertale undertale_(series) unknown_artist
2016 anal balls bodily_fluids butt clothed clothing crying digital_media_(artwork) drooling english_text femboy genitals hair hi_res humanoid looking_at_viewer machine male mettaton mettaton_ex monochrome not_furry open_mouth penetration penis robot saliva simple_background solo tears text torn_clothing undertale undertale_(series) unknown_artist
2016 black_bra black_clothing black_panties black_underwear bra cat_ear_panties cat_keyhole_bra cat_lingerie catpins cleavage_cutout clothed clothing collar crossdressing cutout digital_media_(artwork) domestic_cat felid feline felis femboy frilly frilly_bra frilly_clothing frilly_underwear hair hair_over_eye heart_symbol hi_res humanoid keyhole_bra keyhole_clothing keyhole_underwear leash legwear lingerie machine male mammal mettaton mettaton_ex not_furry one_eye_obstructed open_mouth panties robot side-tie_panties simple_background smile solo source_request thigh_highs training_bra undertale undertale_(series) underwear
clothed clothing digital_media_(artwork) erection genitals glistening hi_res humanoid looking_at_viewer machine male mettaton mettaton_ex not_furry penis robot smile solo tentacles undertale undertale_(series) unknown_artist
2016 digital_media_(artwork) duo english_text erection genitals handjob heart_symbol ikutasemi japanese_text machine male male/male mettaton not_furry penetrable_sex_toy penile penis robot sex sex_toy simple_background solo_focus text toying_partner translated undertale undertale_(series)
2016 ambiguous_gender bodily_fluids clothed clothing cum digital_media_(artwork) femboy genital_fluids genitals glistening hair hair_over_eye heart_symbol humanoid machine male mettaton mettaton_ex not_furry one_eye_obstructed open_mouth penis robot simple_background smile solo tongue undertale undertale_(series)
2016 alternate_universe balls blush digital_media_(artwork) duo english_text erection fan_character femboy gaiki genitals hair heart_symbol hi_res humanoid machine male male/male mettaton mettaton_(underfell) mettaton_ex_(underfell) mettaton_neo multi_arm multi_eye multi_genitalia multi_limb multi_penis not_furry penis robot selfcest sex sharp_teeth simple_background smile square_crossover teeth text underfell undertale undertale_(series) white_background
2016 alpha_channel alternate_universe digital_media_(artwork) fan_character femboy gaiki hair heart_symbol humanoid machine male mettaton_(underfell) mettaton_ex_(underfell) multi_arm multi_eye multi_limb not_furry robot sharp_teeth solo teeth underfell undertale undertale_(series)
2016 digital_media_(artwork) drag_(fashion) duo femboy glistening hair hi_res humanoid machine male male/male mettaton mettaton_ex mettaton_neo not_furry robot selfcest simple_background square_crossover undertale undertale_(series)
2016 digital_media_(artwork) drag_(fashion) duo femboy glistening hair hi_res humanoid machine male male/male mettaton mettaton_ex mettaton_neo not_furry robot selfcest simple_background square_crossover undertale undertale_(series)
2016 crossgender digital_media_(artwork) duo female femboy genitals glistening hair humanoid machine mettaton mettaton_ex not_furry robot selfcest simple_background solo_focus square_crossover undertale undertale_(series) vulva
2016 digital_media_(artwork) duo_focus erection fellatio femboy genitals group hair hotlegmeme human humanoid machine male male/male mammal mettaton mettaton_ex mettaton_neo monochrome not_furry oral penile penis robot selfcest sex simple_background square_crossover tongue undertale undertale_(series)
2016 3:4 digital_media_(artwork) femboy glistening group hair humanoid machine male male/male mettaton mettaton_ex not_furry robot selfcest simple_background soulplay square_crossover tongue undertale undertale_(series)
1:1 2016 abstract_background android black_lips digital_media_(artwork) fangs femboy glistening hair hair_over_eye headshot_portrait humanoid icon lgbt_pride lips low_res machine makeup male metallic_body mettaton mettaton_ex not_furry one_eye_obstructed portrait pride_color_background pride_colors robot robot_humanoid simple_background smile solo source_request teeth trans_(lore) trans_man_(lore) transgender_pride_colors undertale undertale_(series) unknown_artist
1:1 alien android animated animated_gif crossover digital_extremes gun handgun humanoid low_res machine mesa_(warframe) mettaton mouthless not_furry ranged_weapon robot robot_humanoid short_playtime simple_background solo tencent tenno thumbnail undertale undertale_(series) unknown_artist warframe weapon
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