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3boys alphys androgynous android animated animated_gif black_hair blue_skin book brown_hair closed_eyes eyepatch food frisk_(undertale) glasses hair_over_one_eye head_fins heart hood hoodie lowres mettaton mettaton_ex monster_girl multiple_boys multiple_girls papyrus_(undertale) parody pasta polearm ponytail red_hair sans scarf shirt skeleton smile spaghetti sparkle spear steven_universe striped striped_shirt undertale undyne weapon yamsgarden 3girls aaron_(undertale) androgynous beamed_eighth_notes commentary eighth_note epilogue family frisk_(undertale) good_end greyscale half_note headphones horse lemon_bread lynxgriffin mettaton moldbygg moldsmal monochrome monster_boy monster_girl multiple_boys multiple_girls music musical_note napstablook phonograph quarter_note sharp_teeth shyren siblings signature singing sisters slime spoilers teeth temmie turntable undertale 1girl commentary epilogue giggling good_end grin lemon_bread lynxgriffin mettaton mettaton_ex monster_girl sharp_teeth signature smile spoilers teeth undertale 2015 aaron_(undertale) astigmatism final_froggit froggit lemon_bread lynxgriffin mettaton moldbygg moldsmal monster napstablook protagonist_(undertale) reaper_bird shyren simple_background sketch temmie_(undertale) undertale video_games whimsalot whimsun black_and_white black_hair bone bow_tie brothers card cigarette doctrin-zhivago english_text eyewear facial_hair flora_fauna flower flowey_the_flower grim_fandango group hair hat machine male melee_weapon mettaton monochrome mustache papyrus_(undertale) parody plant robot sans_(undertale) scythe sibling skeleton smile suit sunglasses text undertale video_games weapon ambiguous_gender bl8l black_hair brown_hair child comic dialogue eating english_text eyelashes hair hair_over_eyes human humor machine male mammal mettaton pencil pose protagonist_(undertale) robot speech_bubble steak sweat sweatdrop text tongue tongue_out undertale video_games young <3 clothing hair human lights machine mammal mettaton mic pikminaaa protagonist_(undertale) robot undertale video_games alphys asgore asriel_dreemurr chara crossgender flowey_the_flower mad_dummy mettaton monster_kid muffet napstablook papyrus_(undertale) protagonist_(undertale) sans_(undertale) temmie_(undertale) toriel undertale undyne unknown_artist video_games <3 android black_hair hair humblebee machine metal mettaton mettaton_ex robot solo undertale video_games wires alphys astrobullet_(artist) clothing comic english_text fish ghost hoodie house lizard machine marine mettaton monster napstablook reptile robot scalie scarf spirit text undertale undyne video_games clothing english_text ghost hair marine mettaton napstablook red_hair shrubsparrow_(artist) spirit text undead undertale undyne video_games alphys animated_skeleton bone clothing hoodie machine mettaton monster monster_kid musical_instrument napstablook nicky1311_(artist) papyrus_(undertale) protagonist_(undertale) robot sans_(undertale) scarf skeleton trombone undead undertale undyne video_games 1girl 2boys alternate_costume alternate_hair_length alternate_hairstyle android antlers black_hair black_legwear black_scarf bow candy candy_cane christmas christmas_lights crossdress crossdressing dress extra_arms extra_eyes green_bow grin hat hat_ribbon heart hood insect_girl long_hair mettaton mettaton-ex muffet multiple_arms multiple_boys night one_eye_closed one_eye_covered pantyhose papyrus_(undertale) purple_eyes red_nose red_ribbon ribbon rotodisk rudolph_the_red_nosed_reindeer santa_costume scarf short_hair skeleton skirt smile snow trap undertale white_hat 2015 alphys ambiguous_gender anthro asgore_dreemurr boss_monster caprine clothing crossover female goat kill_la_kill machine mako_mankanshoku male mammal melee_weapon mettaton monster monster_kid papyrus_(undertale) rekuh reptile robot ryuko_matoi sans_(undertale) satsuki_kiryuin scalie school_uniform sword temmie_(undertale) toriel undertale undyne uniform video_games weapon 2015 alphys boots butt clothing eyewear female footwear glasses havesomemoore hi_res humor male mettaton monochrome monster protagonist_(undertale) undertale video_games what ambiguous_gender clothing cutie_mark equine feral grimdark-graveyeard hair hooves horse legwear looking_back machine mammal mettaton my_little_pony pink_eyes ponification pony robot simple_background solo stockings undertale video_games alphys black_background black_hair bone clothing cute digital_media_(artwork) earth_pony equine eye_patch eyes_closed eyewear female feral fish flower fur glasses grass hair hooves horn horse lying machine male mammal marine mettaton my_little_pony orange_fur papyrus_(undertale) pegasus pinksonic42 plant ponification pony protagonist_(undertale) red_hair robot sans_(undertale) simple_background skeleton sleeping text undertale undyne unicorn video_games white_fur wings anthro burgerpants cat catnippackets clock english_text feline frown hat machine male mammal mettaton monochrome robot signature speech_bubble stare text undertale video_games <3 bone clothing crossover deviantart dialogue duo equine feral grin hoodie hooves horn horse jacket machine male mammal mettaton my_little_pony pegasus pinksonic42 ponification pony question robot sans_(undertale) shy skeleton smile text undertale unicorn video_games wings 2015 asriel_dreemurr balls black_sclera blue_eyes blush boss_monster breasts butt caprine claws clothing comic crying dialogue english_text female fur goat hi_res horn hug jasonafex kabier lol_comments male mammal markings masturbation mettaton mother mother_and_son nude parent penile_masturbation penis protagonist_(undertale) red_eyes robe son spread_legs spreading tears text toriel undertale undyne video_games white_fur ambiguous_gender big_breasts black_hair breasts brown_hair cleavage clothed clothing crossgender dress duo eyelashes female hair hair_over_eye hi_res huge_breasts human lil-yellow-kirby lipstick looking_away machine mammal mettaton musical_note protagonist_(undertale) purple_eyes robot simple_background size_difference smile undertale video_games white_background asriel_dreemurr bone boss_monster caprine female fish flower flowey_the_flower gaster_blaster goat hair human machine male mammal marine melee_weapon mettaton monster mykiio papyrus papyrus_(undertale) plant polearm protagonist_(undertale) red_hair red_ryes robot sans sans_(undertale) skeleton spear toriel undertale undyne undyne_the_undying video_games weapon alphys anthro arachnid arthropod asgore_dreemurr asriel_dreemurr bone boss_monster breasts caprine chara crossgender female flower flowey_the_flower ghost goat human intersex mad_dummy male mammal mettaton mettaton_ex monster_kid muffet napstablook papyrus penis plant protagonist_(undertale) reptile sans scalie skeleton spider spirit temmie_(undertale) toriel undertale undyne video_games 2015 alphys ambiguous_gender asgore_dreemurr boss_monster caprine crossover female goat kill_la_kill male mammal mettaton monster monster_kid papyrus rekuh sans_(undertale) temmie_(undertale) toriel undertale undyne video_games 5boys alphys asgore_dreemurr black_hair blue_eyes crossover head_fins highres junketsu kill_la_kill kinagase_tsumugu kiryuuin_satsuki long_hair mankanshoku_barazou mankanshoku_mako mankanshoku_matarou mankanshoku_sukuyo matoi_ryuuko mettaton mettaton_ex mikisugi_aikurou monster_kid_(undertale) multicolored_hair multiple_boys multiple_girls papyrus_(undertale) sans school_uniform scissor_blade senketsu serafuku short_hair sickly_prince skirt streaked_hair sword temmie toriel two-tone_hair undertale undyne weapon 2015 3d_(artwork) cgi commodor-richter digital_media_(artwork) machine mettaton robot smile solo source_filmmaker undertale video_games asriel_dreemurr blush boss_monster caprine clothed clothing cute duo english_text goat hi_res male mammal mettaton text undertale unknown_artist video_games young anthro blush burgerpants cat cigarette clothing comic dialogue feline grin hat invalid_tag jyu_shige lagomorph male mammal mettaton nicecream_man rabbit smile smoking speech_bubble text undertale video_games asgore_dreemurr creepy flowey hi_res mettaton muffet papyrus protagonist_(undertale) sans text undertale undyne video_games afterglow_ampharos alternate_color crossover machine metang mettaton microphone nintendo pokémon robot shiny_pokémon undertale video_games 2015 alphys ambiguous_gender asgore_dreemurr expressions flowey_the_flower headshot mettaton papyrus_(undertale) protagonist_(undertale) sans_(undertale) solo toriel undertale undyne video_games 2015 asgore_dreemurr boss_monster caprine crown duo horn machine male male/male mammal mettaton monster penis pillow poster precum robot size_difference undertale video_games asgore_dreemurr balls boss_monster clitoris cuntboy duo horn intersex male mettaton monster penetration penis pussy shiroiyagi size_difference undertale vaginal vaginal_penetration video_games asgore_dreemurr crown duo frottage hi_res horn long_legs male male/male mettaton penis_between_balls sex size_difference undertale video_games alphys asgore_dreemur mettaton one_punch_man sir undertale video_games alphys applejack_(mlp) asgore_dreemurr clothing costume discord_(mlp) draconequus earth_pony equine eye_patch eyewear feral flower flowey_the_flower fluttershy_(mlp) friendship_is_magic glasses hair horn horse jacket long_hair machine mammal melee_weapon mettaton multicolored_hair my_little_pony papyrus pegasus pinkie_pie_(mlp) plant polearm pony princess_celestia_(mlp) princess_luna_(mlp) protagonist_(undertale) rainbow_dash_(mlp) rainbow_hair rarity_(mlp) robot sans_(undertale) scarf spear stick toriel twilight_sparkle_(mlp) two_tone_hair undertale undyne unicorn video_games weapon winged_unicorn wings yukutamil canine clothed clothing half-dressed jackal kkesu legwear machine maim mammal mettaton robot sex canine clothed clothing fingering half-dressed jackal kkesu legwear machine maim mammal mettaton robot <3 black_hair book brown_hair clock clothing dialogue duo eunnieboo exercise footwear frisk hair human invalid_tag legwear machine male mammal mettaton robot shoes speech_bubble stockings text undertale video_games young blush cute duo female ghost male mettaton napstablook simple_background sleeping sound_effects spirit undertale video_games yukiblue94 zzz 2015 anthro asgore_dreemurr barelynsfw_(artist) black_hair blonde_hair blush caprine clothed clothing cum cum_inside cuntboy duo fur girly hair hi_res horn humanoid_penis internal intersex large_penetration machine male mammal mettaton monster open_mouth penetration penis robot sex shocked simple_background size_difference undertale video_games white_fur <3 alpha_channel alphys alternate_species asgore_dreemurr bone caprine chara crossover derjuin earth_pony equine eyewear female feral fish flower flowey_the_flower food friendship_is_magic frisk goat group horn horse knife machine male mammal marine mettaton my_little_pony papyrus pie plant ponification pony robot sans_(undertale) simple_background skeleton sunglasses toriel transparent_background undertale undyne unicorn video_games