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2015 ambiguous_gender android asgore_dreemurr bodily_fluids boots boss_monster_(undertale) bovid caprine clothing crown duo erection femboy footwear foreskin fur genital_fluids genitals headgear high_heels horn humanoid humanoid_genitalia humanoid_penis machine male mammal mettaton mettaton_ex penis pillow poster precum retracted_foreskin robot shiroiyagi shoes size_difference undertale undertale_(series) white_body white_fur 2015 android andromorph andromorph/male anthro anthro_penetrating anthro_penetrating_humanoid arm_hair armpit_hair asgore_dreemurr balls beard body_hair boss_monster_(undertale) bovid caprine clitoris duo erection facial_hair forearm_hair forearms fur genitals hairy hairy_balls hairy_hands horn humanoid humanoid_on_anthro humanoid_penetrated intersex intersex/male larger_male leg_hair machine male mammal mature_anthro mature_male mettaton mettaton_ex penetration penile penile_penetration penis pussy realistic_penis_size robot sex shiroiyagi size_difference smaller_andromorph smaller_intersex undertale undertale_(series) vaginal vaginal_penetration white_body white_fur 2015 android anthro arm_hair armpit_hair asgore_dreemurr balljob beard belly belly_hair big_penis bodily_fluids body_hair boots boss_monster_(undertale) bovid caprine chest_hair clothing crown duo erection facial_hair femboy footwear forearm_hair forearms foreskin frottage fur genital_fluids genitals glistening hairy_hands hairy_legs headgear hi_res high_heels horn humanoid humanoid_genitalia humanoid_penis interspecies larger_male leg_hair long_ears long_legs machine male male/male mammal mature_anthro mature_male mettaton mettaton_ex mustache penile penis penis_size_difference precum realistic_penis_size retracted_foreskin robot sex shiroiyagi shoes size_difference slightly_chubby smaller_male undertale undertale_(series) white_body white_fur 2015 alphys armor asgore_dreemurr beard boss_monster_(undertale) bovid caprine castle english_text error eyewear facial_hair food glasses group hi_res horn lizard machine mammal mettaton monochrome noodles ramen reptile robot scalie shocked sirartwork text undertale undertale_(series) 2015 alphys alternate_species alternate_universe ambiguous_gender applejack_(mlp) asgore_dreemurr boots bottomless chimera clothed clothing cosplay costume cowboy_hat crossover crown discord_(mlp) draconequus earth_pony equid equine eye_patch eyewear feathered_wings feathers female feral flower flowey_the_flower fluttershy_(mlp) footwear friendship_is_magic frisk_(undertale) fur glasses group hair hasbro hat headgear headwear horn horse jacket long_hair machine mammal melee_weapon mettaton mettaton_ex multicolored_hair my_little_pony mythological_creature mythological_equine mythology papyrus_(undertale) pegasus pinkie_pie_(mlp) plant polearm pony princess_celestia_(mlp) princess_luna_(mlp) rainbow_dash_(mlp) rainbow_hair rarity_(mlp) robot sans_(undertale) scarf simple_background spear stick topwear toriel twilight_sparkle_(mlp) two_tone_hair undertale undertale_(series) undyne unicorn weapon white_body white_fur winged_unicorn wings yukutamil 1boy alyssa_gerwig androgynous android bandaged_arm bandages belt black_border black_hair border cable closed_eyes colored_skin commentary english_commentary fabulous frisk_(undertale) full_body glowing grey_skin heart highres holding holding_microphone left-handed light long_sleeves male_focus mettaton mettaton_ex microphone music pants pink_theme pose shirt short_hair shorts singing spotlight stage stage_lights striped_clothes striped_shirt sweater teeth undertale 1boy animated animated_gif brainbubblegum commentary_request dancing genos greyscale male_focus mettaton mettaton_ex monochrome one-punch_man open_mouth parody pose smile solo undertale 2015 abstract_background anthro anthro_penetrated avoid_posting bottomless canid canine canis claws clothed clothing duo female female_on_humanoid female_penetrated genitals hair half-closed_eyes humanoid humanoid_on_anthro humanoid_penetrating humanoid_penetrating_anthro jackal kkesu leg_glider_position leg_grab legwear looking_back machine maim male male/female male_on_anthro male_penetrating male_penetrating_female mammal mettaton mettaton_ex multicolored_hair narrowed_eyes navel penetration penile penile_penetration penis penis_in_pussy raised_leg robot sex spread_legs spreading toe_claws tongue tongue_out undertale undertale_(series) vaginal vaginal_penetration 2015 andromorph anthro avoid_posting black_hair blue_claws blue_hair canid canine canis claws clitoral_hood clitoris clothed clothing digitigrade duo fingering genitals hair hoodie intersex jackal kkesu legwear machine maim mammal mettaton partially_clothed pawpads pussy robot tongue tongue_out topwear undertale undertale_(series) vaginal vaginal_fingering 2015 ambiguous_gender black_hair book brown_hair clock clothing comic dialogue digital_media_(artwork) duo eunnieboo exercise femboy footwear frisk_(undertale) hair heart_symbol human legwear machine male mammal mettaton mettaton_ex robot shoes speech_bubble stockings text undertale undertale_(series) young 1:1 2015 ambiguous_gender blush duo eyes_closed ghost happstablook low_res male mettaton napstablook not_furry simple_background sleeping sound_effects spirit undertale undertale_(series) vowelless vowelless_sound_effect yukiblue94 zzz 2015 andromorph andromorph/male anthro asgore_dreemurr barelynsfw_(artist) black_hair blonde_hair blush bodily_fluids boss_monster_(undertale) bovid caprine chair_position clothed clothing cum cum_inside duo erection femboy from_behind_position fur genital_fluids genitals glistening hair hi_res horn humanoid humanoid_genitalia humanoid_penis internal intersex intersex/male large_penetration larger_male machine male mammal mettaton mettaton_ex on_lap open_mouth penetration penis robot sex shocked simple_background sitting sitting_on_lap size_difference smaller_andromorph smaller_intersex straddling undertale undertale_(series) white_body white_fur 1:1 2015 alpha_channel alphys alternate_species ambiguous_gender animated_skeleton anthro asgore_dreemurr better_version_at_source bone chara_(undertale) clothed clothed_feral clothing crossover derjuin dessert earth_pony elemental_creature equid equine eyewear female feral fish flora_fauna flower flowey_the_flower food frisk_(undertale) fur group hasbro heart_symbol horn horse knife lizard machine male mammal marine mettaton mettaton_ex my_little_pony mythological_creature mythological_equine mythology one_eye_closed papyrus_(undertale) pastry pie plant ponification pony reptile robot sans_(undertale) scalie semi-anthro simple_background skeleton sunglasses toriel transparent_background undead undertale undertale_(series) undyne unicorn white_body white_fur wink 2015 alpha_channel alternate_species armor black_hair clothing crossover cutie_mark derjuin earth_pony equid equine feral footwear hair hasbro horse machine male mammal metal mettaton mettaton_ex my_little_pony ponification pony robot shoes smile solo undertale undertale_(series) 16:9 2015 alphys anthro belly blush breasts covering covering_breasts embarrassed female female_focus fish group huge_hips lizard male marine mettaton mettaton_ex non-mammal_breasts nude overweight overweight_female reptile scalie shamelesss short_stack solo_focus tail thick_tail thick_thighs undertale undertale_(series) undyne wide_hips widescreen 2015 bodily_fluids crying dialogue duo ghost happstablook lapinbeau mettaton monochrome napstablook not_furry sparkles spirit tears text undertale undertale_(series) 2015 android anthro bodily_fluids burgerpants drag_(fashion) drag_queen drooling duo erection fangs felid foreskin genital_fluids genitals glistening hi_res humanoid humanoid_genitalia humanoid_penis machine male male/male mammal mettaton mettaton_ex open_mouth partially_retracted_foreskin penis precum robot saliva strategossmut teeth undertale undertale_(series) 2015 andromorph andromorph/male andromorph_penetrated asgore_dreemurr bed bed_head blush bodily_fluids boss_monster_(undertale) bovid caprine clothing crossgender dongoverlord drooling duo fangs femboy from_front_position fur furniture genitals hi_res humanoid intersex intersex/male intersex_penetrated legwear lying machine male male_penetrating male_penetrating_andromorph male_penetrating_intersex mammal mettaton mettaton_ex missionary_position mta_crossgender mti_crossgender on_back paws penetration penis pillow pink_eyes pomf robot saliva sex stockings teeth undertale undertale_(series) vaginal vaginal_penetration white_body white_fur 2015 anthro asgore_dreemurr beard boss_monster_(undertale) bovid caprine duo facial_hair fur hand_holding horn larger_male long_ears magnadame male male/male mammal mature_anthro mature_male mettaton size_difference smaller_male undertale undertale_(series) 1:1 2015 anthro asgore_dreemurr beard blonde_hair blush boss_monster_(undertale) bovid cape caprine clothed clothing dongoverlord duo facial_hair fur glistening hair horn humor kissing long_ears machine male mammal mature_anthro mature_male mettaton mettaton_ex robot size_difference slideshow suggestive undertale undertale_(series) white_body white_fur 2015 andromorph andromorph/male anthro armpit_hair asgore_dreemurr beard blonde_hair body_hair boss_monster_(undertale) bovid caprine chest_hair crossgender cunnilingus digital_media_(artwork) drag_(fashion) drag_queen duo facial_hair femboy fur glistening hair hairy heart_symbol hi_res horn humanoid intersex intersex/male long_ears machine male mammal mature_anthro mature_male mettaton mettaton_ex mta_crossgender mti_crossgender muscular muscular_male oral orgasm_face pink_slime robot sex slime soulplay tongue tongue_out undertale undertale_(series) unknown_artist vaginal white_body white_fur 1:1 2015 alphys anthro asgore_dreemurr beard blonde_hair blush boss_monster_(undertale) bovid caprine clothing dongoverlord eye_patch eyewear facial_hair female fish frisk_(undertale) fur glasses group hair horn human long_ears machine male mammal marine mature_anthro mature_male mettaton mettaton_ex robot scalie shirt topwear undertale undertale_(series) undyne white_body white_fur 2015 4:5 android conditional_dnp hair hair_over_eye humanoid machine mettaton mettaton_ex not_furry one_eye_obstructed princess_rei robot robot_humanoid solo undertale undertale_(series) 2015 ambiguous_gender anthro burgerpants clothing comic duo felid genitals hat headgear headwear hi_res humor machine mammal mettaton mettaton_ex penis robot text text_on_clothing text_on_hat text_on_headwear undertale undertale_(series) unknown_artist 3boys 3girls aa2233a alphys androgynous annoying_dog armor artist_name asgore_dreemurr bone brown_hair chinese_commentary commentary_request copyright_name crown dog facebook_username fins fist_shaking flag frisk_(undertale) furry ghost goat_girl greater_dog head_fins house mechanical_arms mettaton mettaton_ex monster_girl monster_kid_(undertale) mouth_hold multiple_boys multiple_girls napstablook one_eye_closed open_mouth outstretched_hand papyrus_(undertale) photoshop_(medium) polearm ponytail red_hair sans_(undertale) shirt single_mechanical_arm skull_and_crossbones smile snow spear striped_clothes striped_shirt tongue tongue_out toriel tree tripping undertale undyne v watermark weapon web_address 2015 alphys anthro anthro_penetrated barelynsfw_(artist) blush breasts duo eyewear female female_on_humanoid female_penetrated genitals glasses hi_res humanoid humanoid_on_anthro humanoid_penetrating humanoid_penetrating_anthro interspecies lizard machine male male/female male_on_anthro male_penetrating male_penetrating_female mettaton mettaton_ex nipples non-mammal_breasts non-mammal_nipples penetration penile penile_penetration penis_in_pussy pussy reptile robot scales scalie sex slightly_chubby spread_legs spreading undertale undertale_(series) vaginal vaginal_penetration yellow_body yellow_scales 1boy 1girl :d ^_^ absurdres alexis_royce alphys alternate_universe androgynous android black_hair bodysuit cable closed_eyes commentary_request emblem english_text flying_sweatdrops full_body ghost glasses goggles grin hair_over_one_eye heart highres lab_coat machinery mettaton mettaton_ex monster_girl napstablook open_mouth over-rim_eyewear pale_skin rape_face semi-rimless_eyewear smile speech_bubble spoilers standing talking teeth undertale 1boy 1girl alphys android annoying_dog bad_id bad_pixiv_id black_hair commentary_request copyright_name cosplay crossdressing dog hair_over_one_eye mettaton mettaton_ex monster_girl nichijou open_mouth parody pleated_skirt professor_shinonome professor_shinonome_(cosplay) sakamoto_(nichijou) sakamoto_(nichijou)_(cosplay) scarf school_uniform serafuku shinonome_nano shinonome_nano_(cosplay) skirt tokisadame_school_uniform undertale venusianpeach winding_key 2015 3d_(artwork) animal_print animated_skeleton anthro blush bone boss_monster_(undertale) bovid canid canine canis caprine cheetah_print clothing digital_media_(artwork) doggo_(undertale) domestic_dog female fish flower flowey_the_flower footwear frisk_(undertale) fur ghost grin group human jakkaeront looking_at_viewer machine male mammal marine mettaton mettaton_ex napstablook plant robot sans_(undertale) scarf shadow shoes skeleton smile spirit toriel undead undertale undertale_(series) undyne white_body white_fur 2015 alphys animated_skeleton arachnid armless arthropod asgore_dreemurr asriel_dreemurr beard blonde_hair bone boss_monster_(undertale) bovid caprine chara_(undertale) clothed clothing elemental_creature facial_hair female fish flora_fauna flowey_the_flower foop-mcfawn frisk_(undertale) fur gaster ghost goat hair horn human machine male mammal marine mettaton mettaton_ex monster_kid muffet papyrus_(undertale) plant reptile robot sans_(undertale) scalie skeleton spider spirit sprite third-party_edit toriel undead undertale undertale_(series) undyne white_body white_fur 2015 comic hi_res machine male male/male mettaton mettaton_ex mettaton_neo robot undertale undertale_(series) unknown_artist 1boy adapted_costume android armor bandaged_arm bandages belt black_hair blood blood_from_mouth boysquad colored_skin damaged english_text glowing glowing_eye grey_skin hair_over_one_eye joints looking_at_viewer male_focus mettaton mettaton_ex pauldrons purple_eyes realistic robot_joints shoulder_armor smoke solo spot_color undertale 2015 bone cherrvak clothing coach comic dialogue duo electronics exclamation_point flower footwear greyscale hair heart_symbol hi_res humanoid love machine male mettaton mettaton_ex monochrome papyrus_(undertale) plant robot romantic romantic_ambiance rose_(flower) scarf shoes skeleton sketch speech_bubble television text undertale undertale_(series) 16:9 2015 android armor black_bars dialogue english_text future_diary gesugao glistening glowing glowing_eyes hair hair_over_eye heart_eyes heart_symbol houndiing humanoid letterbox looking_at_viewer machine male mettaton mettaton_ex mirai_nikki not_furry one_eye_obstructed purple_eyes robot robot_humanoid solo text undertale undertale_(series) widescreen yandere 2015 absurd_res alien alien_humanoid android boss_monster_(undertale) bovid caprine cartoon_network clothing crossover dialogue duo electronics english_text gem_(species) gem_fusion hi_res humanoid looking_at_viewer machine male mammal mettaton mettaton_ex microphone multi_arm multi_eye multi_limb not_furry robot sardonyx_(steven_universe) show speech_bubble steven_universe text thenekozombie undertale undertale_(series) 2015 alphys anthro being_watched beverage black_hair bored breasts clothing duo electronics english_text eyewear feet female food forsythiaflowers furniture glasses glistening hair heart_eyes heart_symbol hi_res humanoid lizard looking_at_another machine male mcdonald's mettaton mettaton_ex non-mammal_breasts open_mouth overweight pupils reptile robot scalie shirt sitting smile sofa symbol-shaped_pupils television text text_on_clothing text_on_shirt text_on_topwear topwear undertale undertale_(series) unusual_pupils 2015 alphys anthro armor blueprint book clothing computer crossed_legs desk duo electronics ethreain eyewear female femboy furniture glasses glistening hair hi_res humanoid light lizard machine male mettaton mettaton_ex monitor paper reptile robot scalie scientist sunlight table team_fortress_2 undertale undertale_(series) valve 2015 3:5 armor bite biting_lip biting_own_lip bulge clothing femboy glistening gloves hair handwear hi_res humanoid lips machine male mettaton mettaton_ex monochrome not_furry pose r4 robot self_bite signature simple_background solo undertale undertale_(series) white_background 2015 android dancing glistening glowing glowing_eyes hair hi_res humanoid lapinbeau machine mettaton mettaton_ex monochrome not_furry robot robot_humanoid solo sparkles spotlight undertale undertale_(series) 2015 armor being_watched christmas christmas_clothing christmas_headwear clothing comic crowd dialogue electronics english_text fatz_geronimo group hat headgear headwear heart_symbol holidays human humanoid lagomorph leporid looking_at_another machine mammal mettaton microphone public rabbit robot santa_hat television text undertale undertale_(series) vulkin yelling 1:1 2015 alpha_channel alternate_species black_hair clothing crossover cutie_mark equid equine feral footwear glistening hair hasbro horse kennyteya machine male mammal mettaton mettaton_ex my_little_pony ponification pony quadruped robot shoes simple_background solo transparent_background undertale undertale_(series) 2015 alternate_version_at_source art_nouveau bombs card card_template dogbomber fortune_telling glistening humanoid machine major_arcana male mettaton mettaton_ex robot robot_humanoid roman_numeral solo spotlight tarot tarot_card the_star_(tarot) undertale undertale_(series)