andromorph andromorph/male andromorph_penetrated anthro blush boots bored burgerpants clothed clothing crossdressing crossgender disinterested_sex domestic_cat duo erection felid feline felis femboy footwear fur genitals gloves hair handwear high_heeled_boots high_heels humanoid intersex intersex/male intersex_penetrated machine male male_penetrating male_penetrating_andromorph male_penetrating_intersex mammal mettaton mettaton_ex mta_crossgender mti_crossgender nude open_mouth penetration penis robot sex shiroiyagi shoes simple_background smile undertale undertale_(series) unimpressed vaginal vaginal_penetration vulva
1:1 clothed clothing digital_media_(artwork) drag_(fashion) drag_king english_text erection genitals glistening hair hair_over_eye heart_symbol humanoid humanoid_genitalia humanoid_penis looking_at_viewer machine male mettaton mettaton_ex not_furry one_eye_obstructed open_mouth penis robot simple_background smile solo text tongue undertale undertale_(series)
alternate_universe ambiguous_gender boots border clothed clothing digital_media_(artwork) fan_character footwear group heart_symbol high_heeled_boots high_heels humanoid machine mettaton mettaton_ex mettaton_neo not_furry robot shoes simple_background slim underfell undertale undertale_(series) unknown_artist white_border
animated_skeleton blush bone clothed clothing comic dialogue digital_media_(artwork) duo english_text erection femboy genitals hair heart_symbol hi_res humanoid machine male male/male mettaton mettaton_ex not_furry open_mouth penis robot sans_(undertale) simple_background skeleton smile text tongue undead undertale undertale_(series)
black_hair boots clothed clothing digital_media_(artwork) drag_(fashion) drag_king duo footwear glistening hair high_heeled_boots high_heels humanoid looking_at_viewer machine male male/male mettaton mettaton_ex mettaton_neo nipepocip not_furry robot selfcest shoes simple_background smile soulplay square_crossover undertale undertale_(series)
all_three_filled ambiguous_gender anal anal_penetration anus aquatic balls bathroom bathtub bodily_fluids butt cum cum_everywhere cum_in_ass cum_in_vagina cum_inside cum_on_ground cum_pool cum_splatter cum_while_penetrated cumshot digital_media_(artwork) double_penetration egg egg_insertion ejaculation erection fellatio female femboy fucked_silly gaster genital_fluids genitals group group_sex inside male male/male male_penetrated messy monster onionsan open_mouth oral oral_penetration orgasm outlet oviposition ovipositor penetration penile penis picture_frame salt-ankles sex shower_curtain smile teeth tentacle_in_mouth tentacle_ovipositor tentacle_penetration tentacles toilet tongue towel triple_penetration undertale undertale_(series) vaginal vaginal_penetration water what white_balls white_penis
3:4 anthro blush burgerpants butt clothed clothing digital_media_(artwork) domestic_cat duo felid feline felis fellatio fur glistening hair humanoid machine male male/male male_penetrated male_penetrating male_penetrating_male mammal mettaton mettaton_ex oral penetration penile robot rooomi sex simple_background undertale undertale_(series)
big_penis clothed clothing digital_media_(artwork) erection genitals hair humanoid machine male mettaton mettaton_ex not_furry penis robot simple_background smile solo undertale undertale_(series)
alternate_universe android chibimu clothed clothing digital_media_(artwork) fan_character glistening hair humanoid looking_at_viewer machine male mettaton_(underfell) mettaton_ex_(underfell) multi_arm multi_eye multi_limb not_furry robot robot_humanoid simple_background smile solo underfell undertale undertale_(series) white_background
alphys animal_humanoid aquatic aquatic_humanoid eversorthewry eye_patch eyewear female fish fish_humanoid frisk_(undertale) glasses group hair hair_over_eye humanoid low_res machine male mettaton mettaton_ex monochrome one_eye_obstructed open_mouth robot undertale undertale_(series) undyne
animated_skeleton blush bone clothed clothing drag_(fashion) drag_king duo erection fellatio femboy genitals hair humanoid machine male male/male male_penetrated male_penetrating male_penetrating_male mettaton mettaton_ex not_furry open_mouth oral papyrus_(undertale) penetration penile penis robot rope sex skeleton smile tongue tongue_out undead undertale undertale_(series) yamsgarden
andromorph andromorph/male andromorph_penetrated animated_skeleton bone clothed clothing drag_(fashion) drag_king duo erection genitals hair humanoid intersex intersex/male intersex_penetrated long_hair looking_at_viewer machine male male_penetrating male_penetrating_andromorph male_penetrating_intersex mettaton mettaton_ex not_furry open_mouth peenie-kun penetration penis robot sans_(undertale) sex skeleton solo_focus soulplay tongue undead undertale undertale_(series) vaginal vaginal_penetration vulva
android femboy glistening hair hi_res humanoid long_hair machine male mettaton mettaton_ex not_furry robot robot_humanoid simple_background smile solo undertale undertale_(series) unknown_artist
anal anthro anthro_penetrating anthro_penetrating_humanoid bodily_fluids breasts burgerpants butt clothed clothing crossgender cum digital_media_(artwork) domestic_cat duo erection felid feline felis female fur genital_fluids genitals glistening hair hat headgear headwear hi_res hot_dogging humanoid humanoid_on_anthro humanoid_penetrated long_hair machine male male/female mammal mettaton mettaton_ex monochrome nipples on_bottom on_top penetration penis pink_and_white reverse_cowgirl_position robot sex simple_background smile text text_on_clothing text_on_hat text_on_headgear text_on_headwear thigh_sex undertale undertale_(series) vaginal vulva
animated_skeleton big_butt black_and_white blush bone butt clothed clothing comic dialogue digital_media_(artwork) english_text femboy hair hotlegmeme humor low_res machine male mettaton mettaton_ex monochrome not_furry open_mouth papyrus_(undertale) robot simple_background skeleton smile text undead undertale undertale_(series)
3d_(artwork) 3d_animation anal anal_penetration animated animated_gif ball_size_difference ball_slap balls balls_deep big_balls bouncing_balls bouncing_penis clothed clothing digital_media_(artwork) erection femboy from_front_position genitals glistening glowing group hair human human_on_humanoid human_penetrating human_penetrating_humanoid humanoid humanoid_genitalia humanoid_penetrated humanoid_penis interspecies leeterr low_res machine male male/male male_on_human male_on_humanoid male_penetrated male_penetrating male_penetrating_male mammal mettaton mettaton_ex not_furry nude open_mouth penetration penile penile_penetration penis penis_in_ass penis_size_difference robot sex short_playtime slap smile source_filmmaker_(artwork) spread_legs spreading undertale undertale_(series) watermark
1:1 alternate_universe android bodily_fluids clothed clothing crying digital_media_(artwork) dismemberment fan_character glistening hair humanoid long_hair looking_at_viewer machine male mettaton_(underfell) mettaton_ex_(underfell) not_furry open_mouth robot robot_dismemberment robot_humanoid simple_background solo tears underfell undertale undertale_(series) unknown_artist
black_and_white clothed clothing digital_media_(artwork) duo english_text femboy hair hair_over_eye hotlegmeme humanoid humor long_hair machine male mettaton mettaton_ex monochrome not_furry one_eye_obstructed open_mouth robot simple_background text undertale undertale_(series)
2016 4_edge_5_me absurd_res alternate_universe clothed clothing digital_media_(artwork) edge_lord english_text fan_character femboy gaiki hair hi_res humanoid humor long_hair machine male maximum_edge mettaton mettaton_(underfell) mettaton_ex mettaton_ex_(underfell) mettaton_neo not_furry open_mouth robot sharp_teeth simple_background teeth text tongue underfell undertale undertale_(series) white_background
clothed clothing digital_media_(artwork) duo erection femboy food genitals hair hair_over_eye humanoid humor long_hair machine male mettaton mettaton_ex not_furry one_eye_obstructed penis robot selfcest simple_background square_crossover text undertale undertale_(series)
animatronic bodily_fluids clothed clothing digital_media_(artwork) drooling femboy fucked_silly hair heart_symbol humanoid long_hair machine male mettaton mettaton_ex not_furry open_mouth robot saliva shaking shivering simple_background solo soulplay undertale undertale_(series)
1:1 alphys anthro dinosaur duo eyewear fellatio female genitals glasses lizard lumineko machine mettaton mettaton_ex monochrome oral penile prehistoric_species reptile robot scalie sex sketch undertale undertale_(series) vulva
2015 4:3 akane_kyoko alphys android animal_humanoid animated_skeleton annoying_dog_(undertale) anthro aquatic aquatic_humanoid armless asgore_dreemurr asriel_dreemurr beard black_tie_(suit) blonde_hair blue_eyes blush bone boss_monster_(undertale) bovid bratty_(undertale) camera caprine chara_(undertale) clothed clothing dancing detailed_background dress duo_focus facial_hair female fish fish_humanoid frisk_(undertale) fur ghost goat group hair heart_symbol hi_res horn human humanoid long_ears machine mad_dummy male mammal mettaton mettaton_ex monster_kid napstablook papyrus_(undertale) reptile robot sans_(undertale) scalie signature skeleton spirit star suit tem temmie_(undertale) toriel undead undertale undertale_(series) undyne wedding wedding_dress white_body white_fur
2016 anthro big_ears bruised bruised_eye canid canine canis cosplay dancing digital_media_(artwork) fan_character femboy hair hi_res hierro hierro_(artist) long_hair long_tail machine male mammal mettaton mettaton_ex muscular muscular_anthro muscular_femboy muscular_male pose robot sketch solo tail undertale undertale_(series) wolf
2016 4:3 animated_skeleton anthro blood bodily_fluids bone boss_monster_(undertale) bovid breasts caprine clothed clothing digital_media_(artwork) duo female fur gaiki gesture hand_gesture jerry_(undertale) male mammal open_mouth punch sans_(undertale) simple_background skeleton smile teeth thumbs_up toriel undead undertale undertale_(series) white_body white_fur
alternate_universe ambiguous_gender anon belly_grab blush clothed clothing digital_media_(artwork) duo erection femboy genitals glistening hair human humanoid licking long_hair machine male mammal mettaton_(underfell) mettaton_ex_(underfell) not_furry open_mouth penis robot sharp_teeth simple_background smile teeth tongue tongue_out underfell undertale undertale_(series)
2016 4:3 alternate_universe android blush clothed clothing digital_media_(artwork) fan_character femboy gaiki hair humanoid long_hair machine male mettaton_(underfell) mettaton_ex_(underfell) not_furry open_mouth robot robot_humanoid simple_background solo underfell undertale undertale_(series)
alternate_universe android clothed clothing detailed digital_media_(artwork) fan_character femboy glowing glowing_eyes hair hands_on_hips hi_res humanoid long_hair looking_at_viewer machine male mettaton_(underfell) mettaton_ex_(underfell) multi_arm multi_eye multi_limb not_furry robot robot_humanoid sharp_teeth simple_background solo teeth underfell undertale undertale_(series) unknown_artist
1:1 alternate_universe blush chainsaw clothed clothing digital_media_(artwork) fan_character glistening hair hi_res humanoid long_hair machine male mettaton mettaton_(underfell) mettaton_ex mettaton_ex_(underfell) multi_arm multi_eye multi_limb not_furry open_mouth power_tool robot sharp_teeth simple_background teeth tools underfell undertale undertale_(series) unknown_artist
alternate_universe clothed clothing crossdressing detailed digital_media_(artwork) duo fan_character femboy hair humanoid long_hair looking_at_viewer machine male male/male mettaton mettaton_ex mettaton_ex_(underfell) multi_eye not_furry robot simple_background tongue tongue_out underfell undertale undertale_(series) unknown_artist
ambiguous_gender digital_media_(artwork) duo eyelashes femboy ghost hair happstablook leaf-submas looking_at_viewer male multiple_images napstablook not_furry open_mouth pink_body simple_background smile solo spirit teeth tongue undertale undertale_(series) white_background
2016 absurd_res anthro asriel_dreemurr asriel_dreemurr_(god_form) boss_monster_(undertale) bovid caprine clothed clothing elemental_creature flora_fauna flower flower_creature flowey_the_flower fur gaiki goat hair hi_res horn looking_at_viewer male mammal monochrome open_mouth plant simple_background smile teeth traditional_media_(artwork) undertale undertale_(series) white_background white_body white_fur
2016 bdsm bodily_fluids bondage bound butt clothed clothing cum digital_media_(artwork) erection femboy genital_fluids genitals glistening hair humanoid legwear machine male mettaton mettaton_ex not_furry penis robot simple_background smile solo submissive submissive_male undertale undertale_(series)
absurd_res alphys animated_skeleton anthro aquatic armless asgore_dreemurr bodily_fluids bone boss_monster_(undertale) bovid caprine clothed clothing elemental_creature fish flora_fauna flowey_the_flower frisk_(undertale) hi_res human korean_text lizard long_image mammal mettaton mettaton_ex monster_kid papyrus_(undertale) plant reptile saliva sans_(undertale) scalie simple_background skeleton tall_image text translated unavailable_at_source undead undertale undertale_(series) undyne unknown_artist
16:9 2016 3d_(artwork) 3d_animation animated balls bouncing_balls bouncing_penis consistent_pov digital_media_(artwork) erection eye_contact fellatio femboy first_person_view genitals glistening group handjob heart_eyes heart_symbol hi_res human human_on_humanoid human_penetrating human_penetrating_humanoid human_pov humanoid humanoid_genitalia humanoid_penetrated humanoid_penis interspecies leeterr looking_at_another looking_at_partner looking_at_viewer machine male male/male male_on_human male_on_humanoid male_penetrated male_penetrating male_penetrating_male male_pov mammal mettaton mettaton_ex no_sound not_furry oral oral_penetration penetrating_pov penetration penile penile_penetration penis penis_in_mouth robot robot_humanoid sex short_playtime source_filmmaker_(artwork) undertale undertale_(series) video widescreen
16:9 2016 3d_(artwork) 3d_animation animated balls bouncing_balls bouncing_penis consistent_pov digital_media_(artwork) erection eye_contact fellatio first_person_view genitals glistening group handjob heart_eyes heart_symbol hi_res human human_on_humanoid human_penetrating human_penetrating_humanoid human_pov humanoid humanoid_genitalia humanoid_penetrated humanoid_penis interspecies leeterr looking_at_another looking_at_partner looking_at_viewer machine male male/male male_on_human male_on_humanoid male_penetrated male_penetrating male_penetrating_male male_pov mammal mettaton mettaton_ex no_sound not_furry oral oral_penetration penetrating_pov penetration penile penile_penetration penis penis_in_mouth robot robot_humanoid sex short_playtime undertale undertale_(series) video widescreen
absurd_res biped cel_shading clothed clothed_human clothing detailed_background digital_drawing_(artwork) digital_media_(artwork) duo evening female frisk_(undertale) front_view guppy-17 hair hi_res human light lighting long_image looking_at_viewer machine male mammal mettaton mettaton_ex outside parody robot sequence shaded short_hair side_view tall_image tengen_toppa_gurren_lagann three-quarter_view undertale undertale_(series) young young_female young_human
2016 3d_(artwork) 3d_animation animated animated_gif clothed clothing consistent_pov digital_media_(artwork) erection eye_contact fellatio femboy genitals glistening group hair human human_on_humanoid human_penetrating human_penetrating_humanoid humanoid humanoid_penetrated interspecies leeterr looking_at_another looking_at_partner looking_at_viewer low_res machine male male/male male_on_human male_on_humanoid male_penetrated male_penetrating male_penetrating_male mammal mettaton mettaton_ex not_furry open_mouth oral oral_penetration penetration penile penile_penetration penis penis_in_mouth robot sex short_playtime source_filmmaker_(artwork) thumbnail undertale undertale_(series)
android bust_portrait hair hair_over_eye handsome_squidward_(meme) humanoid humor machine male manly meme mettaton mettaton_ex monochrome nickelodeon not_furry one_eye_obstructed parody portrait robot robot_humanoid simple_background solo spongebob_squarepants squidward_tentacles undertale undertale_(series) unknown_artist
4_fingers bodily_fluids crossgender crossover female fingers ghost hair humanoid leaf-submas machine mad_dummy mettaton mettaton_ex mtt_brand_legs napstablook not_furry panty_anarchy panty_and_stocking_with_garterbelt robot simple_background spirit stocking_anarchy style_emulation tears undertale undertale_(series)
abra alphys alternate_species ambiguous_gender anthro asgore_dreemurr bovid brock_(pokemon) canid caprine crossover duskull elemental_creature eyes_always_closed eyes_closed female feraligatr flora_fauna flower flower_creature flowey_the_flower frisk_(undertale) generation_1_pokemon generation_2_pokemon generation_3_pokemon generation_6_pokemon goat gogoat group gym_leader hitmonchan horn magneton male mammal mettaton nintendo papyrus_(undertale) plant pokemon pokemon_(species) pokemon_trainer pokemorph sans_(undertale) simple_background skiddo slurpuff sunflora temmie_(undertale) toriel undertale undertale_(series) undyne white_background wooven
2:3 alpha_channel ambiguous_gender chainsaw duo egg english_text food frisk_(undertale) heart_symbol human machine mammal mettaton milk not_furry pdubbsquared power_tool robot text tools undertale undertale_(series)
2016 2d_animation anal anal_penetration animated animated_gif animated_skeleton blush bone butt clothed clothing dialogue digital_media_(artwork) duo english_text fel-frisk femboy frame_by_frame from_behind_position genitals hair heart_symbol humanoid humor machine male male/male male_penetrated male_penetrating male_penetrating_male mettaton mettaton_ex not_furry open_mouth papyrus_(undertale) penetration penile penile_penetration penis penis_in_ass robot sex short_playtime skeleton smile stuck text undead undertale undertale_(series)
1:1 2016 anal anal_penetration andromorph andromorph/male anthro anthro_penetrating anthro_penetrating_humanoid asgore_dreemurr balls beard blonde_hair blush bodily_fluids boss_monster_(undertale) bovid butt caprine clothing cum digital_media_(artwork) dongoverlord duo erection facial_hair femboy fur genital_fluids genitals glistening hair hi_res horn humanoid humanoid_on_anthro humanoid_penetrated intersex intersex/male long_ears machine male male_penetrating mammal mettaton mettaton_ex muscular open_mouth orgasm penetration penile penile_penetration penis robot sex soulplay undertale undertale_(series) vaginal vaginal_penetration vulva white_body white_fur
alphys animated_skeleton anthro aquatic bone clothed clothing dialogue digital_media_(artwork) duo english_text eye_patch eyewear female fish food fruit glasses glistening grand_piano grape hair keyboard_instrument lizard long_hair machine male mettaton mettaton_ex musical_instrument open_mouth papyrus_(undertale) piano plant red_hair reptile robot scalie simple_background skeleton smile text trash_can undead undertale undertale_(series) undyne unknown_artist
accessory ambiguous_gender android animal_humanoid animated animated_gif animated_skeleton aquatic aquatic_humanoid arachnid arachnid_humanoid arthropod arthropod_humanoid bone boss_monster_(undertale) bovid bow_(feature) bow_accessory bow_ribbon caprine chara_(undertale) clothed clothing duo female fish fish_humanoid frisk_(undertale) fur glowing glowing_eyes hair_accessory hair_bow hair_ribbon human humanoid low_res machine male mammal mettaton mettaton_ex muffet multiple_images papyrus_(undertale) ribbons robot sans_(undertale) scarf short_playtime simple_background skeleton smile spider_humanoid toriel twin_bows twin_hair_bows undead undertale undertale_(series) undyne unoobang white_body white_fur
accessory ambiguous_gender android animal_humanoid animated_skeleton anthro aquatic aquatic_humanoid arachnid arachnid_humanoid arthropod arthropod_humanoid bone boss_monster_(undertale) bovid bow_(feature) bow_accessory bow_ribbon caprine chara_(undertale) clothed clothing duo female fish fish_humanoid frisk_(undertale) fur glowing glowing_eyes hair_accessory hair_bow hair_ribbon human humanoid machine male mammal mettaton mettaton_ex muffet multiple_images papyrus_(undertale) ribbons robot sans_(undertale) scarf skeleton smile spider_humanoid toriel twin_bows twin_hair_bows undead undertale undertale_(series) undyne unoobang white_body white_fur
2016 bottomwear clothing crossgender dialogue english_text female geeflakes glistening heart_eyes heart_symbol hi_res lips machine male_(lore) mettaton mettaton_ex mtf_crossgender not_furry robot skirt solo text undertale undertale_(series) undressing y2k_(fashion)
animated_skeleton anthro aquatic asgore_dreemurr beard blood bodily_fluids bone boss_monster_(undertale) bovid caprine chara_(undertale) clothed clothing dinosaur facial_hair female fish flowey_the_flower frisk_(undertale) horn human machine male mammal mettaton mettaton_ex papyrus_(undertale) prehistoric_species reptile robot sans_(undertale) scalie simple_background skeleton sketch toriel traditional_media_(artwork) undead undertale undertale_(series) undyne unusualsombrero
2016 2_frame_animation 2d_animation 4:3 aliasing ambiguous_gender animated animated_gif digital_media_(artwork) gesture humor lenny_face low_res machine meme mettaton not_furry reaction_image robot sex_gesture short_playtime simple_background solo suggestive suggestive_gesture undertale undertale_(series) unknown_artist what white_background
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