2015 alternate_universe ambiguous_gender animated_skeleton anthro aquatic bodily_fluids bone boss_monster_(undertale) bovid caprine clothing crying digital_media_(artwork) elemental_creature female fish flora_fauna flower flowey_the_flower flowey_the_flower_(underfell) fur group male mammal plant sad sans_(underfell) sans_(undertale) simple_background skeleton tears toriel toriel_(underfell) undead underfell undertale undertale_(series) undyne undyne_(underfell) unknown_artist white_background white_body white_fur
alternate_universe animated_skeleton bone clothing duo english_text footwear gold_(metal) gold_tooth male not_furry open_mouth papyrus_(underfell) sans_(underfell) shoes simple_background skeleton text undead underfell undertale undertale_(series) unknown_artist white_background
1:1 alternate_universe animated_skeleton bone clothing english_text gaster_blaster gold_(metal) gold_tooth male monster not_furry red_eyes sans_(underfell) skeleton smile text undead underfell undertale undertale_(series) unknown_artist
2015 alternate_universe animated_skeleton bone clothed clothing dialogue ellipsis english_text grin jacket looking_at_viewer male not_furry open_clothing open_jacket open_topwear pastel-possum question_mark red_eyes sans_(underfell) simple_background skeleton smile solo teeth text topwear undead underfell undertale undertale_(series) white_background
2015 alternate_universe animated_skeleton bone clothing dialogue english_text humanoid looking_at_viewer male not_furry pastel-possum question_mark red_eyes sans_(underfell) simple_background skeleton solo source_request teeth text undead underfell undertale undertale_(series) white_background
2015 alternate_universe animated_skeleton bone clothing dialogue english_text jacket male not_furry one_eye_closed pastel-possum sans_(underfell) simple_background skeleton solo teeth text topwear undead underfell undertale undertale_(series) white_background
2015 alternate_universe animated_skeleton anthro aquatic asgore_(underfell) bone boss_monster_(undertale) bovid caprine chibimu clothing doctor_alphys_(underfell) english_text eyewear female fish fur glasses group happy horn male mammal mettaton_(underfell) mettaton_ex_(underfell) papyrus_(underfell) sans_(underfell) skeleton smile teeth text toriel_(underfell) undead underfell undertale undertale_(series) undyne_(underfell) white_body white_fur
4:5 alternate_universe animated_skeleton bone chibimu clothing humanoid not_furry sans_(underfell) simple_background skeleton smile solo undead underfell undertale undertale_(series) white_background
2015 alternate_universe animated_skeleton bone clothing hi_res humanoid lynxieles not_furry sans_(underfell) simple_background skeleton solo undead underfell undertale undertale_(series)
2015 alternate_universe animated_skeleton black_background bone brown_hair clothing comic dialogue digital_media_(artwork) duo english_text eyes_closed frisk_(undertale) grin hair human humanoid knocker12 mammal not_furry protagonist_(underfell) question_mark red_eyes sans_(underfell) sharp_teeth simple_background skeleton smile teeth text undead underfell undertale undertale_(series) white_background
3:1 absurd_res alternate_universe animated_skeleton bone boots chain clothed clothing echotale fan_character footwear gold_(metal) gold_tooth group hi_res hoodie jacket littletale male not_furry outertale sans_(echotale) sans_(littletale) sans_(outertale) sans_(underfell) sans_(underswap) sans_(undertale) shirt shoes simple_background skeleton slippers thescarred_(artist) topwear undead underfell underswap undertale undertale_(series)
2015 alternate_universe angry animated_skeleton bone boots clothing duo english_text fan_character footwear gloves handwear hoodie ice male not_furry paint paint_can papyrus_(underfell) rachel_yew_(artist) red_clothing red_gloves red_handwear sans_(underfell) shoes skeleton smile text topwear undead underfell undertale undertale_(series)
accessory alternate_universe animated_skeleton blue_eyes bone cigarette clothed clothing coffee_mug container cracked_skull cross-popping_vein cup echotale english_text eyewear glasses gloves gold_(metal) gold_tooth handwear holding_container holding_cup holding_object hoodie humanoid jacket male multiple_images necktie not_furry outertale red_eyes sans_(echotale) sans_(outertale) sans_(underfell) sans_(underswap) sans_(undertale) scarf science_sans sharp_teeth simple_background skeleton smile smoke smoking solo sparkles teeth text time_skip time_travel time_traveler toono_(artist) topwear undead underfell underswap undertale undertale_(series) vein white_background yellow_eyes
alternate_universe animated_skeleton animextremex annoyed blue_eyes bone duo english_text happy hug not_furry red_eyes sans_(underfell) sans_(underswap) skeleton text undead underfell underswap undertale undertale_(series)
alternate_universe animated_skeleton bodily_fluids bone clothing cum cum_on_face digital_media_(artwork) eye_mist front_view genital_fluids half-length_portrait hi_res hoodie leaning male not_furry orgasm portrait sans_(underfell) skeleton solo topwear undead underfell undertale undertale_(series)
alternate_universe animated_skeleton bdsm bondage bone bound dominant dominant_male duo hi_res incest_(lore) male male/male not_furry papyrus_(underfell) razinoats sans_(underfell) skeleton submissive submissive_male undead underfell underswap undertale undertale_(series)
5:6 absurd_res alkipunch alternate_universe ambiguous_gender animal_humanoid animated_skeleton arachnid arachnid_humanoid arthropod arthropod_humanoid bone erection fellatio genitals group group_sex hi_res humanoid male male/ambiguous muffet oral penile penis sans_(underfell) sex simple_background skeleton spider spider_humanoid threesome trio undead underfell 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
alternate_universe animated_skeleton bone cigarette clothed clothing duo errortale fingerless_gloves glitch gloves handwear hoodie negafell negatale not_furry raining sans_(errortale) sans_(negafell) sans_(negatale) sans_(underfell) sans_(undertale) savvart skeleton smile smoke smoking topwear undead undertale undertale_(series) water
2016 5:4 alternate_universe animated_skeleton bone duo foxvulpine male not_furry papyrus_(underfell) sans_(underfell) skeleton undead underfell undertale undertale_(series)
2016 5:4 alternate_universe animated_skeleton belt bone boots bottomwear brown_hair clothed clothing duo_focus flowey_the_flower footwear forest foxvulpine fully_clothed gloves group hair hand_in_pocket hands_in_both_pockets handwear human jacket male mammal not_furry outside pants papyrus_(underfell) plant pockets protagonist_(underfell) sans_(underfell) sharp_teeth shirt shoes short_hair shorts shrub side_view size_difference skeleton smile snow teeth topwear tree undead underfell undertale undertale_(series) walking
alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) comic dialogue english_text incest_(lore) male male/male monster not_furry oolay-tiger papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) sex sibling_(lore) skeleton text undead underfell undertale undertale_(series)
against_surface against_wall ahegao alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) comic dialogue english_text heart_eyes heart_symbol incest_(lore) looking_pleasured male male/male not_furry one_eye_closed oolay-tiger papyrus_(underfell) penetration profanity sans_(underfell) sans_(undertale) sex sibling_(lore) skeleton text tongue tongue_out undead underfell undertale undertale_(series)
absurd_res alternate_universe angry animated_skeleton bone boss_monster_(undertale) bovid cape caprine clothed clothing comic crown english_text eyes_closed female flower gold_(metal) gold_tooth happy headgear hi_res hoodie horn laugh long_image male mammal marl-arts plant robe sans_(underfell) sans_(underswap) sans_(undertale) sharp_teeth skeleton sleeping smile tall_image teeth text topwear toriel toriel_(underfell) toriel_(underswap) undead underfell underswap undertale undertale_(series)
1:1 alternate_universe animated_skeleton blush bone cigarette clothed clothing group implied_incest incest_(lore) lizheru looking_at_viewer male male/male not_furry papyrus_(underswap) red_eyes sans_(underfell) sans_(underswap) skeleton smile suggestive tongue undead underfell underswap undertale undertale_(series)
1:1 2016 alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) cigarette clothed clothed_sex clothing collaborative collaborative_fellatio collaborative_oral collaborative_sex erection fellatio furniture genitals glowing glowing_genitalia glowing_penis group humanoid_genitalia humanoid_penis incest_(lore) licking lizheru looking_at_viewer male male/male monster not_furry oral papyrus_(underswap) penile penis penis_lick red_eyes sans_(underfell) sans_(underswap) sex sibling_(lore) skeleton smile smoking sofa tongue tongue_out undead underfell underswap undertale undertale_(series)
absurd_res alternate_universe animated_skeleton avian bird bone chicken clothed clothing comic duo english_text galliform gold_(metal) gold_tooth hi_res hoodie humor male marl-arts not_furry phasianid sans_(underfell) sans_(undertale) sharp_teeth skeleton source_request teeth text topwear undead underfell undertale undertale_(series)
alpha_channel alternate_universe animated_skeleton bodily_fluids bone clothed clothing gold_(metal) gold_tooth hoodie humanoid male marl-arts not_furry sans_(underfell) sharp_teeth skeleton solo sweat teeth topwear undead underfell undertale undertale_(series)
alpha_channel alternate_universe angry animated_skeleton bone clothed clothing food footwear holding_object humanoid itsrainingpotato_(artist) looking_at_viewer low_res mustard not_furry red_eyes sans_(underfell) shoes simple_background skeleton solo standing transparent_background undead underfell undertale undertale_(series)
3:5 alternate_universe animated_skeleton blue_eyes blush bodily_fluids bone caught_in_the_act collar comic dialogue duo ellipsis english_text heart_symbol interrobang leash male male/male mistaken_identity multiple_scenes not_furry nsfwshamecave papyrus_(underfell) red_eyes sans_(underfell) sans_(underswap) skeleton submissive submissive_male suggestive surprised sweat text undead underfell underswap undertale undertale_(series)
1:1 2_frame_animation alternate_universe angry animated animated_gif animated_skeleton blue_eyes blush bone brother_(lore) brothers_(lore) clothed clothed_sex clothing collar confusion dominant dominant_male ellipsis erection fellatio genitals group heart_symbol humanoid humanoid_on_humanoid humanoid_penetrated humanoid_penetrating humanoid_penetrating_humanoid incest_(lore) leash loop male male/male male_penetrated male_penetrating male_penetrating_male mistaken_identity not_furry nsfwshamecave oral oral_only oral_penetration papyrus_(underfell) penetration penile penile_penetration penis penis_in_mouth question_mark sans_(underfell) sans_(underswap) sex short_playtime sibling_(lore) skeleton slideshow submissive submissive_male undead underfell underswap undertale undertale_(series)
alien alien_humanoid alternate_universe animated_skeleton army_(steven_universe) black_sclera bone cartoon_network ckaitlyn clothed clothing crossover dancetale doc_(steven_universe) eyeball_(steven_universe) fully_clothed gans_(echotale) gem_(species) gloves group handwear humanoid inktale kerchief leggy_(steven_universe) mafiatale navy_(steven_universe) not_furry plant rock ruby_(gem_species) ruby_(steven_universe) sans_(mafiatale) sans_(underfell) sans_(underswap) sans_(undertale) signature skeleton snow star steven_universe sweater topwear tree undead underfell underswap undertale undertale_(series)
16:10 alternate_universe animated_skeleton blush bodily_fluids bone clothed clothed_sex clothing colored_cum cum cum_on_face cum_on_hand cum_on_tongue english_text genital_fluids glowing glowing_eyes group heart_symbol male male/male not_furry nsfwshamecave sans_(underfell) sans_(underlust) sans_(underswap) sans_(undertale) sex skeleton text tongue tongue_out undead underfell underlust underswap undertale undertale_(series) unusual_bodily_fluids unusual_cum unusual_genital_fluids widescreen
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
2015 alternate_universe ambiguous_gender animated_skeleton blush bodily_fluids bone clothed clothing coat digital_media_(artwork) duo footwear heart_symbol hug human jacket mamaito mammal not_furry protagonist_(underfell) sans_(underfell) shoes skeleton sweat teeth topwear undead underfell undertale undertale_(series)
alternate_universe ambiguous_gender animated_skeleton black_sclera bone bottomwear charmander clothing crossover fire flaming_tail footwear generation_1_pokemon gold_(metal) gold_tooth hi_res jacket keksbela nintendo pokemon pokemon_(species) red_eyes sans_(underfell) shoes shorts simple_background skeleton smile sneakers solo sweater tail topwear undead underfell undertale undertale_(series) watermark white_background
5:4 alkipunch alternate_universe animated_skeleton bone erection genitals hi_res humanoid male not_furry penis sans_(underfell) skeleton solo undead underfell undertale undertale_(series)
1:2 alternate_universe animated_skeleton blush bone clothing heart_symbol humanoid incest_(lore) kissing kissing_neck male not_furry nsfwshamecave papyrus_(underfell) papyrus_(underswap) papyrus_(undertale) question_mark sans_(underfell) sans_(underswap) sans_(undertale) skeleton surprised undead underfell underswap undertale undertale_(series)
2016 4_fingers 5_fingers abstract_background alternate_universe animated_skeleton anthro belt black_sclera blush bone boss_monster_(undertale) bottomwear bovid breasts caprine cigar clothed clothing duo eyeshadow fangs female fingers flower fur half-closed_eyes heart_symbol hi_res horn jacket larger_female makeup male mammal markings mature_anthro mature_female mole_(marking) narrowed_eyes pants plant red_eyes robe sans_(underfell) signature size_difference skeleton smaller_male smile smoking snowystoat sweater teeth topwear toriel_(underfell) turtleneck undead underfell undertale undertale_(series) white_body white_fur yellow_sclera
alternate_universe anal anal_penetration animated_skeleton blush bodily_fluids bone clothed clothed_sex clothing cum duo genital_fluids hands_behind_back heart_eyes heart_symbol male male/male male_penetrated male_penetrating male_penetrating_male not_furry penetration rough_sex saliva sans_(underfell) sans_(undertale) selfcest sex skeleton square_crossover sweat tears undead underfell undertale undertale_(series) unusual_bodily_fluids unusual_cum unusual_genital_fluids
alternate_universe animated_skeleton anterior_nasal_aperture black_and_white bone clothed clothing crossed_arms front_view humanoid jacket jazzycat male monochrome not_furry sans_(underfell) simple_background skeleton solo sweater teeth topwear undead underfell undertale undertale_(series) white_background
alternate_universe animated_skeleton bone drakoonlord extreme_size_difference human humanoid low_res mammal monster not_furry open_mouth oral_vore red_eyes sans_(underfell) sharp_teeth size_difference skeleton teeth tongue tongue_out undead underfell undertale undertale_(series) vore
16:9 alternate_universe apode blush bone draconcopode drakoonlord glowing glowing_eyes humanoid legless male monster naga open_mouth oral_vore red_eyes reptile sans_(underfell) sans_(underswap) scalie serpentine sharp_teeth skeleton snake teeth tongue tongue_out underfell underswap undertale undertale_(series) vore widescreen
alternate_universe animated_skeleton bald blush bodily_fluids bone clothed clothing collar erection genitals hi_res humanoid humanoid_genitalia humanoid_penis kori-nio looking_at_viewer male not_furry penis sans_(underfell) simple_background skeleton smile solo sweat teeth undead underfell undertale undertale_(series)
alternate_universe animated_skeleton anthro bone boss_monster_(undertale) bottomwear bovid breasts caprine clothed clothing duo elemental_manipulation female fire fire_manipulation fog footwear fur gaster_blaster gold_(metal) gold_tooth hi_res hoodie horn male mammal red_eyes renrink robe sans_(underfell) sans_(undertale) shoes shorts signature skeleton skull smile sneakers topwear toriel undead underfell undertale undertale_(series) white_body white_fur
2017 2d_animation alternate_universe animated animated_skeleton biped black_sclera blinking blush bodily_fluids bone brown_clothing brown_topwear bust_portrait chinese clenched_teeth clothed clothing digital_drawing_(artwork) digital_media_(artwork) front_view frown gold_(metal) gold_tooth hoodie humanoid looking_at_viewer looking_up male mitu_mao no_sound not_furry portrait red_clothing red_eyes red_topwear sans_(underfell) sharp_teeth shirt short_playtime simple_background skeleton solo standing sweat sweatdrop teeth thinking thoughtful_expression topwear undead underfell undershirt undertale undertale_(series) video white_background
2017 2d_animation alternate_universe animated animated_gif animated_skeleton anterior_nasal_aperture biped black_sclera blinking blush bodily_fluids bone brown_clothing brown_topwear bust_portrait chinese clenched_teeth clothed clothing digital_drawing_(artwork) digital_media_(artwork) front_view frown gold_(metal) gold_tooth hoodie humanoid looking_at_viewer looking_up male mitu_mao not_furry portrait red_clothing red_eyes red_topwear sans_(underfell) sans_(undertale) sharp_teeth shirt short_playtime simple_background skeleton skull solo standing sweat sweatdrop teeth thinking thoughtful_expression topwear undead underfell undershirt undertale undertale_(series) white_background
2017 alternate_universe animated_skeleton annoyed bad_metadata biped black_background black_sclera blush bone brown_clothing brown_topwear chinese chinese_text clothed clothing digital_media_(artwork) front_view frown glowing glowing_eyes gold_(metal) gold_tooth gradient_background half-length_portrait hands_behind_back hi_res hoodie humanoid jacket light lighting looking_at_viewer male missing_sample mitu_mao not_furry open_clothing open_jacket open_topwear orange_eyes portrait red_background red_clothing red_topwear sans_(underfell) sans_(undertale) shadow sharp_teeth shirt simple_background skeleton solo standing teeth text topwear translated undead underfell undershirt undertale undertale_(series)
6:5 alternate_universe animated_skeleton blush bone brother_(lore) brothers_(lore) clothing duo english_text evilbeetle eyes_closed heart_symbol hi_res hug humanoid incest_(lore) kissing male male/male not_furry papyrus_(underfell) papyrus_(undertale) sans_(underfell) sans_(undertale) sibling_(lore) simple_background skeleton smile text undead underfell undertale undertale_(series) white_background
ahen3251 alternate_universe animated_skeleton bodily_fluids bone clothed clothing duo hi_res hoodie male not_furry sans_(underfell) sans_(undertale) simple_background skeleton sweat topwear undead underfell undertale undertale_(series)
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