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alphys ambiguous_gender asgore_dreemurr bone boss_monster brothers caprine female fire fish flora_fauna flower flowey_the_flower goat human lizard machine male mammal marine melee_weapon mettaton monster napstablook papyrus_(undertale) plant polearm protagonist_(undertale) reptile robot sans_(undertale) scalie sibling silhouette simple_background skeleton spear temmie_chang toriel trident undertale undyne video_games weapon <3 alphys ambiguous_gender asgore_dreemurr asriel_dreemurr bone boss_monster bow_tie burgerpants caprine cat chara_(undertale) drawing dummy elemental eye_patch eyewear feline female fire fire_elemental fish food gaster ghost glasses goat grillby human knife lagomorph lizard locket machine mad_dummy male mammal marine mettaton monster monster_kid napstablook nicecream_man noodles papyrus_(undertale) protagonist_(undertale) rabbit reptile robot sans_(undertale) scalie skeleton spirit tem temmie_(undertale) undertale undyne video_games waitingmatter ! alphys blush clothing dialogue duo ear_fins embarrassed english_text eye_patch eyewear female female/female fin fish fondling glasses hand_in_panties hand_in_underwear lizard marine monochrome monster mortified multiple_positions navel nude orgasm panties reptile scalie sex simple_background spurkeht surprise sweat sweatdrop text undertale underwear undyne video_games 2015 alphys eyewear female glasses mapleleauf monster nervous solo sweat teeth text undertale video_games alphys black_and_white blush breasts clothing comic domination duo eye_patch eyewear female female/female female_domination fish hair hi_res lizard marine monochrome monster pen_(artwork) reptile scalie teeth text traditional_media_(artwork) undertaild undertale undyne video_games alphys bone kissing lizard monster reptile sans_(undertale) scalie skeleton undertale unknown_artist video_games alphys ambiguous_gender annoying_dog bim0ngsam0ng bone brothers brown_hair canine cape clothing dog female flowey_the_flower ghost gloves group hair headphones human loren_(undertale) male mammal monster monster_kid napstablook papyrus_(undertale) pomeranian protagonist_(undertale) sans_(undertale) sibling simple_background skeleton spirit sweat toby_fox undertale video_games 2016 absurd_res alphys animated_skeleton asgore_dreemurr bone boots caprine clothed clothing digital_media_(artwork) duo female female/female footwear glowing glowing_eyes goat group hair_bow hair_ribbon hi_res leda456 mammal mettaton muffet napstablook painting papyrus_(undertale) protagonist_(undertale) ribbons sans_(undertale) scarf sitting skeleton smile sunset toriel uncanny_valley undead undertale undyne video_games alphys chozo crossover female flowey_the_flower group human kraid male mammal metroid metroid_(species) monster monster_kid mother_brain nintendo papyrus_(undertale) parody protagonist_(undertale) ridley ripper samus_aran sans_(undertale) smile that_one_bug_that_looks_like_a_croissant_that_you_can_freeze_and_use_as_a_platform toriel tran4of3 undertale video_games alphys animated_skeleton asgore_dreemurr bone caprine english_text eye_patch eyewear female glasses goat hi_res horn male mammal papyrus_(undertale) protagonist_(undertale) sans_(undertale) skeleton sonichu sweat text the_weaver toriel undead undertale undyne video_games ^_^ alphys artist_name blue_skin blush carrying closed_eyes couple earmuffs eyepatch eyeshadow fang freckles gills glasses gloves grey_background head_fins head_tilt jacket light_smile makeup monster_girl multiple_girls parted_lips pince-nez ponytail punpunichu red_hair scarf shared_scarf simple_background smile socks tail tail_sock teeth undertale undyne upper_body winter_clothes yellow_skin yuri 2boys akemi_homura akemi_homura_(cosplay) alphys buck_teeth cosplay english glasses hands_in_pockets mahou_shoujo_madoka_magica miki_sayaka miki_sayaka_(cosplay) multiple_boys open_mouth papyrus_(undertale) sans sarcasticasides tomoe_mami tomoe_mami_(cosplay) undertale 2boys akemi_homura akemi_homura_(cosplay) alphys buck_teeth cosplay english glasses hands_in_pockets mahou_shoujo_madoka_magica miki_sayaka miki_sayaka_(cosplay) multiple_boys papyrus_(undertale) sans sarcasticasides shaded_face spoilers sweat sweating_profusely tomoe_mami tomoe_mami_(cosplay) undertale alphys alternate_costume baseball_cap beamed_eighth_notes black_nails blush breasts cleavage commentary_request dragon_girl dress eighth_note eyeliner fins fish_girl flying_sweatdrops fountain_pen glasses hair_bun hair_over_one_eye hand_on_own_cheek hat heart imagining labcoat looking_at_viewer looking_away makeup medium_breasts monster_girl multiple_girls musical_note nail_polish napstablook pen polka_dot polka_dot_dress ponytail robot role_reversal ryokutya1107 sharp_teeth silhouette spoken_object teeth thought_bubble undertale undyne yellow_sclera alphys angry armor blush cosplay dragon_girl eyepatch fins fish_girl glasses gloves height_difference laughing matching_outfit monster_girl multiple_girls plump ponytail red_hair ryokutya1107 sharp_teeth shoulder_pads simple_background sweatdrop tail teeth tongue tongue_out undertale undyne undyne_(cosplay) alphys alphys_(cosplay) black_nails blush breasts commentary_request cosplay dragon_girl dress eyepatch fins fish_girl glasses hair_over_one_eye hand_on_hip heart height_difference matching_outfit monster_girl multiple_girls nail_polish plump polka_dot polka_dot_dress ponytail red_hair ryokutya1107 sharp_teeth simple_background skirt_hold small_breasts tail teeth undertale undyne wavy_hair alphys artist_name creature glasses gradient gradient_background half-closed_eyes highres looking_down monochrome monster_girl pince-nez pink pink_background pink_blood pink_eyes solo syringe teeth tratser_enoyreve undertale upper_body 3girls alphys androgynous bad_id bad_twitter_id brown_eyes brown_hair commentary_request food frisk_(undertale) mettaton mettaton_ex misha_(hoongju) multiple_boys multiple_girls papyrus_(undertale) petting pie sans shirt skeletal_arm slice_of_pie striped striped_shirt toriel undertale undyne 1girl alphys blush boke-chan glasses labcoat monster monster_kid_(undertale) no_arms no_humans simple_background striped sweat undertale alphys alphys_(cosplay) androgynous asgore_dreemurr asgore_dreemurr_(cosplay) asriel_dreemurr asriel_dreemurr_(cosplay) barefoot boots chara_(undertale) cosplay crown dress erbry eyepatch fangs frisk_(undertale) glasses horns jacket knife mettaton mettaton-ex mettaton-ex_(cosplay) monster_kid_(undertale) monster_kid_(undertale)_(cosplay) muffet muffet_(cosplay) multiple_persona papyrus_(undertale) papyrus_(undertale)_(cosplay) ponytail purple_hair robe sans sans_(cosplay) scarf shirt slippers smile spear striped striped_shirt tank_top tea teapot toriel toriel_(cosplay) twintails undertale undyne undyne_(cosplay) >_o alphys blue_skin blush breasts comic head_fins heart lizard_taro medium_breasts multiple_girls one_eye_closed onsen red_hair sharp_teeth teeth undertale undyne yellow_skin alphys blue_skin blush chinese comic glasses head_fins lizard_taro monster_girl multiple_girls muscle muscular_female onsen sharp_teeth teeth translated undertale undyne yellow_skin alphys blue_skin blush comic glasses head_fins lizard_taro monster_girl multiple_girls muscle muscular_female onsen ponytail red_hair sharp_teeth teeth undertale undyne yellow_skin 2girls abs alphys blue_skin blush breasts casual comic covering covering_breasts gills glasses head_fins lizard_taro medium_breasts monster_girl multiple_girls muscle muscular_female onsen ponytail red_hair sharp_teeth teeth undertale undyne yellow_skin alphys blue_skin blush casual comic glasses head_fins lizard_taro monster_girl multiple_girls onsen ponytail red_hair sharp_teeth teeth temmie undertale undyne yellow_skin alphys animal_ears backpack bag blue_skin casual cat_ears chinese comic eyepatch glasses head_fins lizard_taro monster_girl multiple_girls ponytail red_hair sharp_teeth shirt smile striped striped_shirt teeth temmie translated undertale undyne yellow_skin alphys blue_skin casual chinese comic eyepatch glasses head_fins lizard_taro monster_girl multiple_girls ponytail red_hair sharp_teeth smile teeth translated undertale undyne yellow_skin 2girls alphys blue_skin casual chinese comic eyepatch fake_screenshot glasses lizard_taro monster_girl multiple_girls ponytail red_hair sparkle spinning spinning_top translated undertale undyne yellow_skin alphys bathing blue_skin blush breasts chinese comic fish_girl head_fins hug lizard_taro medium_breasts monster_girl multiple_girls nude onsen red_hair sharp_teeth teeth translated undertale undyne yellow_skin yuri !! 2girls ? alphys bathing blue_skin blush breasts comic covering covering_breasts embarrassed fish_girl head_fins hug lizard_taro looking_to_the_side medium_breasts monster_girl multiple_girls nude onsen red_hair sharp_teeth teeth undertale undyne yellow_skin yuri @_@ alphys bathing blue_skin blush breasts buck_teeth cleavage comic commentary_request eyewear_removed fangs fish_girl glasses head_fins lizard_girl lizard_taro looking_at_another looking_away medium_breasts monster_girl multiple_girls nude onsen open_mouth pink_hair red_hair sharp_teeth steam teeth undertale undyne wet yellow_eyes yellow_skin yuri 2girls alphys blue_skin blush comic head_fins lizard_taro monster_girl multiple_girls onsen red_hair sharp_teeth tail teeth towel undertale undyne yellow_skin 1girl alphys aruurara furry glasses green_eyes labcoat reptile solo undertale yellow_skin 4girls absurdres alphys androgynous armor artist_name asgore_dreemurr asriel_dreemurr beard black_sclera blood bloody_tears bone bow bowtie chara_(undertale) cloak close-up comic commentary crown crying crying_with_eyes_open english english_commentary facial_hair frisk_(undertale) gameplay_mechanics ghost greyscale hat head_fins heart highres horns knife long_image maricaripan mettaton monochrome monster_boy monster_girl monster_kid_(undertale) muffet multiple_boys multiple_girls napstablook no papyrus_(undertale) pauldrons ponytail robe robot saliva sans scarf shirt shorts skeleton skull slash spoilers spot_color spotlight striped striped_shirt tall_image tears top_hat toriel undertale undyne water wavy_mouth 1girl alphys artist_name bad_deviantart_id bad_id cliff comic crack dvd_case english eyebrows falling g0966 glasses half-closed_eyes hidden_eyes highres holding in_the_face jacket labcoat long_sleeves monster_girl motion_lines open_clothes open_jacket outdoors profanity punching shaded_face shirt silhouette skeleton speech_bubble talking teeth thick_eyebrows turtleneck undertale w.d._gaster water wingdings 1boy 1girl alphys androgynous black_eye comic english fangs glasses highres injury labcoat monochrome monster_boy monster_kid_(undertale) mudkipful shirt siblings simple_background spoken_body_part striped striped_shirt tail thinking topless undertale undressing 1boy 2koma 3girls alphys blush buck_teeth coat comic english eyepatch glasses head_fins heart holding_hands horns hug kiss monster_girl multiple_girls palidoozy-art ponytail sans skeleton star star-shaped_pupils symbol-shaped_pupils tank_top toriel typewriter undertale undyne you're_doing_it_wrong yuri 2others 3girls alphys androgynous angel_wings apron asriel_dreemurr blood board_game book brown_hair caribun chara_(undertale) chips comic cookie dice dungeons_and_dragons dvd_(object) eating english eyepatch figure food frisk_(undertale) fullmetal_alchemist glasses gm_screen greater_dog hat highres holding_hands jpeg_artifacts monopoly monster_boy monster_kid_(undertale) multiple_girls multiple_others oven_mitts pink_eyes purple_eyes red_eyes red_hair scarf shirt spoilers star star-shaped_pupils striped striped_shirt symbol-shaped_pupils toriel undertale undyne what_if wings wizard_hat wolf yellow_eyes 4boys alphys androgynous asgore_dreemurr battle bone child comic frisk_(undertale) knife mettaton monochrome multiple_boys multiple_girls papyrus_(undertale) sans shaded_face short_hair skeleton spoilers sweat toriel translated undertale undyne yosiokunn 4boys alphys androgynous asgore_dreemurr battle bone child comic frisk_(undertale) knife mettaton monochrome multiple_boys multiple_girls papyrus_(undertale) sans shaded_face short_hair skeleton spoilers sweat toriel translated undertale undyne yosiokunn ? alligator alphys anthro asriel_dreemurr avielsusej axe black_hair blonde_hair blue_fur blue_skin blush boss_monster bratty_(undertale) briefs burger burgerpants canine caprine cash_register cat catty_(undertale) child cigarette clothed clothing dialogue dog dog_treat dogamy dogaressa doggo dragon english_text eye_patch eyes_closed eyewear feline female fish food footwear fur glasses goat green_scales hair hat headphones helmet hi_res lab_coat lagomorph machine male mammal marine melee_weapon monster napstablook nicecream_man overweight pants_down partially_clothed purple_fur rabbit red_hair reptile rg01 rg02 robot sandals scales scalie smile speech_bubble sweat sword text underswap undertale underwear undyne video_games weapon white_fur young :d ^_^ ^o^ alphys bad_id bad_pixiv_id blue_skin blush breasts chibi cleavage closed_eyes collarbone crossed_arms dress english eyepatch eyeshadow fangs gills glasses grin head_fins large_breasts makeup minigirl monster_girl multiple_girls muscle muscular_female nail_polish on_shoulder open_mouth polka_dot polka_dot_dress ponytail ramgu red_hair red_nails scar signature simple_background sitting_on_shoulder smile tail tank_top teeth undertale undyne upper_body white_background yellow_sclera yellow_skin