2:3 animated_skeleton blue_eyes blush bodily_fluids bone brown_hair chara_(undertale) clothing crossover eyes_closed female frisk_(undertale) gaster group hair hi_res hoodie human madotsuki male mammal not_furry oh-onii poniko question_mark red_eyes sans_(undertale) seccom_masada skeleton smile sweat sweatdrop topwear uboa undead undertale undertale_(series) vertical_bar_eyes yellow_body yellow_skin yume_nikki
1:1 5_fingers animated_skeleton bone character_cipher crossover disney eyebrows eyes_closed fingers gaster gesture hand_gesture just_right meme not_furry ok_sign pacha_(the_emperor's_new_groove) reaction_image skeleton solo spirit text the_emperor's_new_groove undead undertale undertale_(series) unknown_artist wingdings_text
back_boob bedroom_eyes blue_eyes bone breasts butt curvy_figure female gaster_blaster genitals grid half-closed_eyes heart_eyes heart_symbol hi_res looking_at_viewer narrowed_eyes nightmare-arts not_furry seductive skeleton solo third-party_edit undertale undertale_(series) unknown_species voluptuous vulva
2016 absurd_res animated_skeleton back_boob back_focus bedroom_eyes big_breasts big_butt black_sclera blue_eyes bone breasts butt censored censored_by_face curvy_figure dialogue duo english_text female fire_eyes gaster_blaster grid half-closed_eyes hand_on_hip heart_eyes heart_symbol hi_res huge_breasts humanoid looking_at_viewer looking_back narrowed_eyes nightmare-arts not_furry open_mouth sans_(undertale) seductive sharp_teeth skeleton skull smile solo_focus speech_bubble teeth text undead undertale undertale_(series) voluptuous wide_hips
aftertale animated_skeleton blood bodily_fluids bone chara_(undertale) clothed clothing comic dialogue duo english_text frisk_(undertale) gaster_blaster group human impalement knife loverofpiggies male mammal melee_weapon multiple_scenes not_furry sans_(undertale) skeleton solo teeth text trio undead undertale undertale_(series) weapon wounded
2016 alphys_(underfell) alternate_universe animated_skeleton anthro bone clothing duo eyewear female gaster_(underfell) geeflakes glasses heart_symbol male nose_to_nose reptile scalie skeleton undead underfell undertale undertale_(series)
16:9 animated animated_skeleton bone clothed clothing digital_media_(artwork) english_text fatz_geronimo gaster humor monochrome short_playtime simple_background skeleton smile sound text translated undead undertale undertale_(series) video what widescreen
aftertale animated_skeleton blood bodily_fluids bone chara_(undertale) clothed clothing comic dialogue english_text frisk_(undertale) gaster_blaster human knife loverofpiggies male mammal melee_weapon not_furry sans_(undertale) skeleton teeth text undead undertale undertale_(series) weapon wounded
animated animated_gif animated_skeleton bone breath clothing epilepsy_warning fatz_geronimo gaster glitch monochrome not_furry panting short_playtime simple_background skeleton smile solo undead undertale undertale_(series)
alternate_universe animated_skeleton bone cigarette clothing falling fan_character footwear gaster_blaster glass grin hi_res hoodie korhiper not_furry papyrus_(undertale) sans_(undertale) shoes skeleton slippers smile smoke topwear undead underswap undertale undertale_(series) warm_colors
1:2 animated_skeleton bone clothing coat duo gaster gaster_blaster glowing hi_res hole_(anatomy) humanoid korhiper looking_at_viewer not_furry simple_background skeleton snow topwear trenchcoat undead undertale undertale_(series)
animated_skeleton anterior_nasal_aperture blue_clothing blue_eyes blue_hoodie blue_topwear bone clothing comic_sans dialogue digital_media_(artwork) english_text footwear gaster_blaster grin hi_res hoodie humanoid korhiper looking_at_viewer not_furry sans_(undertale) shoes skeleton slippers smile solo speech_bubble text topwear undead undertale undertale_(series)
2015 animated_skeleton blue_fire bone clothed clothing colored_fire english_text fire footwear gaster_blaster hi_res hoodie horn looking_at_viewer male maplespyder not_furry sans_(undertale) sharp_teeth shoes simple_background skeleton skull smile sneakers teeth text topwear undead undertale undertale_(series)
absurd_res adult_(lore) aged_down animated_skeleton animextremex big_eyes bone comic daww dialogue english_text father_(lore) female flashback food frisk_(undertale) gaster hi_res holding_baby human humanoid ketchup long_image male male_humanoid mammal monster mother_(lore) neonate not_furry parent_(lore) rosy_cheeks sans_(undertale) skeleton speech_bubble tall_image text undead undertale undertale_(series) young young_humanoid young_male
16:9 2016 alternate_universe animated_skeleton anterior_nasal_aperture bone chappietriggerhappy cigarette clothed clothed_male clothing digital_media_(artwork) english_text gaster_blaster grin hoodie humanoid male not_furry papyrus_(underswap) papyrus_(undertale) skeleton skull smile smoking solo text text_box topwear undead underswap undertale undertale_(series) widescreen
2016 4:5 absurd_res alkipunch animated_skeleton bodily_fluids bone clothed clothing dated dialogue digital_media_(artwork) english_text erection gaster_blaster genital_fluids genitals hi_res hoodie humanoid_genitalia humanoid_penis it_ain't_gonna_do_itself male penis precum sans_(undertale) simple_background skeleton solo text topwear undead undertale undertale_(series) white_background
2:3 andatsea animated_skeleton bone clothed clothing gaster_blaster hoodie male not_furry sans_(undertale) skeleton solo topwear undead undertale undertale_(series)
animated_skeleton bone boots clothed clothing footwear gaster_blaster gloves group handwear hoodie humanoid jf-madjesters1 not_furry papyrus_(undertale) sans_(undertale) scarf shoes skeleton sneakers topwear undead undertale undertale_(series)
2015 animated_skeleton armor biceps black_background bone clothed clothing digital_media_(artwork) english_text eyewear gaster_blaster gloves group handwear hi_res humor monochrome muscular not_furry papyrus_(undertale) rocketpunchriot scarf simple_background skeleton sunglasses text text_box undead undertale undertale_(series)
16:9 alternate_universe animated animated_gif animated_skeleton anterior_nasal_aperture bone clothed clothing epilepsy_warning errortale gaster_blaster glitch hoodie humanoid jacket kana_the_drifter not_furry sans_(errortale) sans_(underfell) sans_(underswap) sans_(undertale) scarf short_playtime skeleton skull solo string topwear undead underfell underswap undertale undertale_(series) weapon widescreen
animated_skeleton bone clothed clothing gaster_blaster glowing hi_res hoodie laser male raphaelzenarosa sans_(undertale) skeleton smile topwear undead undertale undertale_(series)
2016 anthro anthrofied areola bent_over big_areola big_breasts big_butt black_body black_fur black_penis black_sclera blue_body blue_fur blue_nipples bodily_fluids bone breasts butt canid canine crossover cum cum_in_uterus cum_inside curvy_figure duo ejaculation english_text erection facial_markings fan_character female female_penetrated fur gaster_blaster generation_4_pokemon genital_fluids genitals hair hand_on_another's_butt hand_on_butt head_markings heart_symbol hi_res huge_breasts huge_butt humanoid_genitalia humanoid_penis inside internal interspecies long_hair lucario male male/female male_penetrating male_penetrating_female mammal markings nightmare-arts nintendo nipples nude penetration penile penile_penetration penis penis_in_vagina pokemon pokemon_(species) pokemorph pupils red_eyes sex shadow-anubis skull slit_pupils smile spikes stripes teeth text undertale undertale_(series) uterus vaginal vaginal_canal vaginal_penetration voluptuous white_eyes white_hair wide_hips
2016 anthro anthrofied areola bent_over big_areola big_breasts big_butt black_body black_fur black_penis black_sclera blue_body blue_fur blue_nipples bodily_fluids bone breasts butt canid canine cape clothed clothing crossover cum cum_in_uterus cum_inside curvy_figure duo ejaculation english_text erection eyewear facial_markings fan_character female female_penetrated fur gaster_blaster generation_4_pokemon genital_fluids genitals hair hand_on_another's_butt hand_on_butt head_markings heart_symbol hi_res huge_breasts huge_butt humanoid_genitalia humanoid_penis inside internal interspecies long_hair lucario male male/female male_penetrating male_penetrating_female mammal markings nightmare-arts nintendo nipples nude penetration penile penile_penetration penis penis_in_vagina pokemon pokemon_(species) pokemorph pupils red_eyes sex shadow-anubis skull slit_pupils smile spikes stripes sunglasses teeth text undertale undertale_(series) uterus vaginal vaginal_canal vaginal_penetration voluptuous white_eyes white_hair wide_hips
2016 absurd_res animated_skeleton annoying_dog_(undertale) bone canid canine canis comic dialogue domestic_dog english_text frisk_(undertale) gaster_blaster hi_res human humor male mammal papyrus_(undertale) shirokaze2012 skeleton speech_bubble text undead undertale undertale_(series)
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
animated_skeleton bone clothed clothing dialogue food gaster group japanese_text male not_furry papyrus_(undertale) sans_(undertale) simple_background skeleton smile text tickclockclocks translated undead undertale undertale_(series)
angry animated animated_gif animated_skeleton bone demorrt digital_media_(artwork) emoji frown gaster grave humor sans_(undertale) short_playtime simple_background skeleton text tombstone translated undead undertale undertale_(series) white_background
absurd_res alternate_universe altertale ambiguous_gender animated_skeleton anthro asgore_dreemurr bodily_fluids bone boss_monster_(undertale) bovid caprine chara_(undertale) clothed clothing dialogue english_text flowey_the_flower frisk_(undertale) fur gaster group hi_res hoodie horn human male mammal papyrus_(undertale) red_eyes sans_(altertale) sans_(undertale) simple_background skeleton smile tears text thegreatrouge topwear toriel toriel_(altertale) undead undertale undertale_(series) white_background white_body white_fur
absurd_res animated_skeleton animextremex asgore_dreemurr blood bodily_fluids bone boss_monster_(undertale) bovid brother_(lore) brothers_(lore) caprine character_cipher clothing death english_text gaster hi_res male mammal melting not_furry papyrus_(undertale) sans_(undertale) sibling_(lore) skeleton text toriel translation_within_image undead undertale undertale_(series) undyne white_body wingdings_text wounded
animated animated_gif animated_skeleton bone bottomwear clothed clothing eyes_closed gaster_blaster glowing glowing_eyes group hoodie inamaril looking_at_viewer low_res not_furry sans_(undertale) shadow short_playtime shorts simple_background skeleton skull smile solo_focus topwear undead undertale undertale_(series) white_background
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
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
absurd_res animated_skeleton animextremex blood blue_eyes bodily_fluids bone comic elemental_creature english_text flora_fauna flower flowey_the_flower frisk_(undertale) gaster_blaster hi_res human long_image mammal plant sans_(undertale) skeleton tall_image text undead undertale undertale_(series)
3:2 ambiguous_gender anthro anthrofied blue_eyes bone brown_body brown_fur clothing cosplay digital_media_(artwork) digital_painting_(artwork) domestic_cat fangs felid feline felis footwear fur gaster_blaster glowing glowing_eyes grumpy hoodie looking_at_viewer mammal meme multicolored_body multicolored_fur painting_(artwork) pink_nose sans_(undertale) shoes signature skeleton slippers solo tardar_sauce teeth topwear tsaoshin two_tone_body two_tone_fur undead undertale undertale_(series) whiskers white_body white_fur
3:2 animated_skeleton anterior_nasal_aperture blue_eyes bone clothing digital_media_(artwork) digital_painting_(artwork) fangs footwear gaster_blaster hoodie humanoid looking_at_viewer not_furry painting_(artwork) sans_(undertale) shoes skeleton skull slippers smile solo teeth topwear tsaoshin undead undertale undertale_(series)
2015 animated_skeleton bodily_fluids bone bottomwear clothed clothing covering covering_self crying digital_media_(artwork) electronics gaster_blaster gasterblaster!sans hoodie humanoid male monster not_furry phone sad sans_(undertale) shaded shaking sharp_teeth shorts signature skeleion skeleton solo standing sweater tears teeth topwear undead undertale undertale_(series)
ambiguous_gender animated animated_gif animated_skeleton black_sclera blue_eyes bone brown_hair chara_(undertale) clothed clothing duo fight footwear gaster_blaster hair hoodie human humanoid male mammal not_furry red_eyes sans_(undertale) shoes short short_playtime skeleton smile sweater theroguedeity topwear undead undertale undertale_(series)
animated_skeleton bone character_cipher clothing fatz_geronimo gaster heart_symbol hi_res not_furry robe skeleton smile solo text undead undertale undertale_(series) wingdings_text
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)
absurd_res aftertale animated_skeleton bone clothing gaster_blaster hi_res male not_furry ohmben sans_(undertale) simple_background skeleton solo undead undertale undertale_(series)
bone gaster goo-connected_lips goo_creature goo_humanoid helaviskrew hole_(anatomy) humanoid laboratory liquid male monster muscular skeleton skull slime undertale undertale_(series)
2016 3:4 4_fingers 4_toes alphys anthro blush bone breasts clothed clothed_anthro clothed_female clothed_male clothing coat dialogue digital_media_(artwork) duo english_text exclamation_point eyewear feet female female_anthro fingers gaster glasses helaviskrew hi_res lab_coat male monster non-mammal_breasts question_mark reptile scales scalie science simple_background skeleton speech_bubble text toes topwear undertale undertale_(series) underwear yellow_body yellow_scales
anal anatid animated_skeleton anon anonym anseriform avian bird bodily_fluids bone cum double double_penetration duck erection female gaster genital_fluids genitals glowing group helaviskrew hi_res laboratory male male/female monster muffet napstablook neon papyrus_(undertale) penetration penis sans_(undertale) science skeleton undead undertale undertale_(series) vaginal vaginal_penetration vulva
animated_skeleton bone bunnymuse clothed clothing gaster headshot_portrait kristal_candeo low_res not_furry portrait skeleton solo undead undertale undertale_(series) white_eyes
animated animated_gif animated_skeleton bone character_cipher fatz_geronimo gaster humanoid monochrome not_furry short_playtime simple_background skeleton smile text translated undead undertale undertale_(series) wingdings_text
2016 4:3 bone digital_media_(artwork) english_text fatz_geronimo gaster heart_symbol humanoid looking_at_viewer not_furry simple_background skeleton text undertale undertale_(series)
2015 animated_skeleton bone clothing digital_media_(artwork) flower gaster happy mamaito monster not_furry plant rose_(flower) skeleton smile solo undead undertale undertale_(series)
1:1 alternate_universe animated_skeleton bone cellphone character_cipher clothed clothing dialogue duo earbuds electronics gaster headphones keno9988 monochrome not_furry phone sans_(underfell) skeleton text translated undead underfell undertale undertale_(series) wingdings_text
2016 alphys animated_skeleton annoying_dog_(undertale) armless being_watched blush bone brown_hair canid canine canis clothed clothing desk domestic_dog elemental_creature eyes_closed eyewear flora_fauna flowey_the_flower food footprint frisk_(undertale) fully_clothed furniture gaster ghost glasses gloves group hair handwear high-angle_view human jacket kerchief ketchup lizard looking_at_another looking_at_viewer looking_up machine male mammal mettaton monster monster_kid napstablook open_mouth papyrus_(undertale) photo plant reptile rigorigo robot sans_(undertale) scalie scarf shirt short_hair sitting skeleton smile snow soul_devouring_eyes spirit table text topwear undead undertale undertale_(series)
2016 amalgamate ambiguous_gender animated_skeleton aquatic arachnid armor arthropod asriel_dreemurr avian battle beverage bodily_fluids bone boss_monster_(undertale) bovid butterfly caprine clothing comic container cup cupcake dagger dessert doughnut electronics elemental_creature english_text explosion eye_patch eyewear female fight fish flora_fauna flower flower_creature flowey_the_flower food footwear frisk_(undertale) gaster_blaster goat hard_hat headgear helmet human humanoid insect lepidopteran lynxgriffin mad_dummy mammal melee_weapon monochrome muffet pastry photoshop_flowey plant polearm reaper_bird rocket rope sans_(undertale) skeleton spear speech_bubble spider spider_web sweat tea tea_cup television text toriel undead undertale undertale_(series) undyne vines weapon wounded yelling
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