Underswapsans Stories

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249 Stories

  • Love For Negativity [Nightmare Sans x Reader] by Takuya-san
    Takuya-san
    • WpView
      Reads 1,113
    • WpPart
      Parts 1
    (Extremely slow updates.) тнєу ωєяє ηєνєя мєαηт тσ вє ѕєραяαтє. тнєу ωєяє мєαηт тσ вє тσgєтнєя. ꓄ꅐꄲ ꒒ꄲꇙ꓄ ꇙꄲ꒤꒒ꇙ ꒐ꋊ ꋬ ꓄ꋪꋬꍌ꒐ꉔ ꓄ꋬ꒒ꏂ. 𝚆𝚒𝚕𝚕 𝚝𝚑𝚎𝚢 𝚜𝚞𝚛𝚟𝚒𝚟𝚎 𝚊𝚗𝚍 𝚝𝚑𝚛𝚒𝚟𝚎? 𝕎𝕚𝕝𝕝 𝕥𝕙𝕖 𝕜𝕚𝕟𝕘 𝕒𝕟𝕕 𝕙𝕚𝕤 𝕢𝕦𝕖𝕖𝕟 𝕗𝕚𝕟𝕕 𝕥𝕙𝕖𝕚𝕣 𝕨𝕒𝕪 𝕥𝕠 𝕥𝕙𝕖 𝕝𝕚𝕘𝕙𝕥 𝕥𝕙𝕖𝕪 𝕕𝕖𝕤𝕚𝕣𝕖𝕕, 𝕠𝕣 𝕤𝕦𝕔𝕔𝕦𝕞𝕓 𝕥𝕠 𝕥𝕙𝕖 𝕕𝕒𝕣𝕜𝕟𝕖𝕤𝕤 𝕥𝕙𝕒𝕥 𝕥𝕙𝕠𝕦𝕘𝕙𝕥 𝕥𝕙𝕖𝕪 𝕙𝕒𝕕 𝕔𝕠𝕟𝕥𝕣𝕠𝕝 𝕠𝕧𝕖𝕣? ᗷᑘᖶ, ᘺᘿ ᘻᑘSᖶ 𝙉𝙊𝙏 ᖴᓍᖇᘜᘿᖶ. Love overpowers all. 𝐇𝐢𝐬 𝐝𝐞𝐬𝐢𝐫𝐞 𝐟𝐨𝐫 𝐧𝐞𝐠𝐚𝐭𝐢𝐯𝐢𝐭𝐲, 𝐚𝐧𝐝 𝐡𝐞𝐫 𝐋𝐨𝐯𝐞 𝐅𝐨𝐫 𝐍𝐞𝐠𝐚𝐭𝐢𝐯𝐢𝐭𝐲.
  • Ask and/or Dare the AU Sans [OLD] by Cookiestar16
    Cookiestar16
    • WpView
      Reads 6,658
    • WpPart
      Parts 52
    [This is really old so... please don't judge me if the beginning parts sound a bit cringe or all over the place..!] Basically, you comment down in the comments either a question to one or all of the Sans or you can dare them. PM me if you want to be in my story!
  • Tainted Ink [Undertale MV story] by DeadEnDead
    DeadEnDead
    • WpView
      Reads 3,839
    • WpPart
      Parts 15
    Pastel, a gentle Ink variant who was possessed for centuries, finally manages to regain control. But their magic is still tainted, and the multiverse isn't as safe as it once was. They'll need help from Blue and Dream to adjust. Cover art by the wonderful @Nymara379 on A03 ♡
  • Taken Away (Dustberry) by Fredbear679
    Fredbear679
    • WpView
      Reads 996
    • WpPart
      Parts 5
    This is my first story on Wattpad. Warning: This story may/will include: violence, some cuss words When Dust takes Blueberry, Underswap Papyrus goes after them.
  • SANS UNDERTALE X SHREK by tomatoes84
    tomatoes84
    • WpView
      Reads 282
    • WpPart
      Parts 2
    sans unertale x shrek fall in love!
  • Undertale Sans Oneshots by Gloomy-Ghostie
    Gloomy-Ghostie
    • WpView
      Reads 14,251
    • WpPart
      Parts 5
    Sans X Reader fanfics
  • * Redefine by edgyfacethenerdskell
    edgyfacethenerdskell
    • WpView
      Reads 819
    • WpPart
      Parts 12
    Welcome to the Multiverse, a world where dreams come true, anything can happen, and the laws of physics could probably give up at any second and very few would care. With entering this world, however, you also agree to sever your timeline's temporal barriers, and promise to follow the new world's laws as thoroughly as possible. There is much you will not understand here; there is much you don't want to understand. Your old identity is not enough anymore. There are thousands of other "you"s running around, and they are just as valid, if a bit chaotic. You are no longer that person. You are no longer a "Sans", or "Chara", or "Undyne"; it is your responsibility to find a new identity. You may notice that you are changing. Don't worry; it's all just part of being something new. While you will lose your old identity, this is your chance to redefine yourself. Who you used to be is irrelevant to the person you are today. You will be known by your Found Name and Temporal Identity, not your universe. Those who used to be your "counterparts" aren't just other "you"s anymore; everyone is their own, and only their own. This world is yours to explore; this life is yours to live; this story is yours to write. Your past does not define you. Do you agree to the terms and conditions? ❤️* YES. * NO. ------ As a New World rises to shatter the boundaries between previously disconnected worlds and AUs, Blue, a new recruit of the Multiversal Bureau of Law from a recently opened Underswap Timeline, sees greatness just over the horizon. However, when a new set of dark timelines appears on the Entry List, things aren't off to a good start. ((A/N: This is a side-project, so it may not be very consistent update-wise, but I hope you enjoy!))
  • Papy's New Bitty by Thefangirlsfan
    Thefangirlsfan
    • WpView
      Reads 11,436
    • WpPart
      Parts 3
    US Pap gets a Bitty! Blueberry is always the one who gets one, so I'm determined to write one with Pap! Stretch (US Pap) goes out on a walk for a good smoke. On his walk he stumbles upon Rivetheart's Bitty Care Center. Being close to his brothers birthdays takes a look around, to find someone just right.
  • A Brother's Bond by TwilightDragon5
    TwilightDragon5
    • WpView
      Reads 69,255
    • WpPart
      Parts 26
    It's been a few years since the events of Dreamtale. Dream is forced to constantly protect everyone's happiness against his brother Nightmare, and it seems nothing can stop him. However, when Dream finds out something that could save his brother, he jumps at the opportunity. Can Dream get his brother back, or will Nightmare fully succumb to the madness? Dreamtale, Dream, and Nightmare belong to Joku.
  • Underswap!sans x reader [rewrite] by vannysreesespuffs
    vannysreesespuffs
    • WpView
      Reads 26
    • WpPart
      Parts 2
    on my old account I wrote this and someone asked me to continue it but I lost the password so I'm writing it on this account (art not mine. duh) anyways, enjoy!
  • Cherryberry / Fellberry oneshots •|• lemon (NSFW) •|• by _GenoSwap_
    _GenoSwap_
    • WpView
      Reads 64
    • WpPart
      Parts 1
    basically what the title says (Swap will be female btw)
  • You're pretty Fang-tastic ~High school Sans AU's X lupine reader~ (discontinued) by DragonOkami951
    DragonOkami951
    • WpView
      Reads 3,226
    • WpPart
      Parts 5
    (Y/n) has always been different, but not in the different you're probably thinking. She's half human half monster. Half wolf to be exact. Her ears and tail are big red flags to the beast in her blood. Thank god she has the ability to hide them! The girl's parents were killed when she was a babe, but they saved her in the process. People used to chase her down to try and experiment on her or throw her in the underground. That all is avoided now for she found herself a foster mother. In school she takes precaution not to get close to anyone, only acquaintances allowed. But now, all monsters have been freed from the underground! They take refuge on the surface and go to her school. What happens when the ambassador, Frisk and a certain group of skeletons befriend her? Being around her they start to notice key things about Y/n's person and get suspicious. Most importantly, some begin to gain feelings for the girl. What lengths is she willing to go to keep her true self a secret? And with all this attention, how long before the others discover it? I guess you'll just have to find out. Undertale belongs to the annoying do- I mean Toby Fox All of the AUs belong to their lovely creators Of course you belong to the wonderful you!
  • Underswap Papyrus x Depressed! Reader  by Glitch_girl17
    Glitch_girl17
    • WpView
      Reads 30,556
    • WpPart
      Parts 9
    The title says it all. Sorry this is my first book so it's probably a piece of crap. Will contain mature content. Such as, swearing, abuse, general violence.
  • Yandere Sans ! x Abuse! Reader  by puccalover321
    puccalover321
    • WpView
      Reads 508
    • WpPart
      Parts 3
    so I think this story will have fluff but I will warn you if it happen but I might auctully die after this SOOOO ok well hope you enjoy sinners~~•//v//•
  • Don't_Forget.png  by that-other-snas
    that-other-snas
    • WpView
      Reads 148
    • WpPart
      Parts 3
    ............to think that everyone would live normally without you, knowing that everyone you once loved had forgotten that you were ever a part of their lives, and no one knows your name, and someone's been covering your face in all the pictures of you with black ink. you'd think that you want to die. what's the point of life, then? you don't know how this feels. you... you remember me, right? right?! I know you do. I-I'm still someone..... I... e-exist....
  • inked by dreams by yourbestieemi
    yourbestieemi
    • WpView
      Reads 90
    • WpPart
      Parts 2
    so this is about undertale characters from well undertale lol. for those of us who don't know undertale is a game that changes as you go through the game with what decisions you make. this story is about to of those characters: dream sans and nightmare sans from dreamtale. it shows them from being young and attached to each other. dream realises that he doesn't need his brother to look a free him. and that's where everything goes downhill. nightmare realises that he needs his brother but dream is busy with prince stuff as he us heir to the throne. nightmare is furious and trys to convince his farther that it should be him as he is older. but the dad refuses. so nightmare leaves home and that's where something bad happens. and dream is to blame. that is the description I hope that it gets you interested in it. I will try to upload the chapters as quick as I can but it can't be helped if I can't sorry.
  • AU Sanses and Papyruses x Reader HIGHSCHOOL **DISCONTINUED** by Torigoat
    Torigoat
    • WpView
      Reads 265
    • WpPart
      Parts 3
    Haha yeet this is my first Wattpad book, so I'll do the best I can to make it good :) . This book is for the people who want some love and skelebooty in their everyday life, so if that's you, why don't you come on in ',:)?
  • Some Dreams Never Come True by Allcapsgurl
    Allcapsgurl
    • WpView
      Reads 6,693
    • WpPart
      Parts 22
    The anticipated sequel to the ask book Ask the Star Sanses (with cap and more AU'S) [read that first] (Is still an ask book) Dear Diary, It's been five years since I was separated from Ink, yet I haven't seen him since, we used to write to each other, but they became fewer and fewer, until the last saying that he wasn't allowed to do it anymore. While the odds of me getting Blue and Fell home are extremely slim. The device was malfunctioning, and we can't go anywhere, even me, and my teleport powers used to be unlimited. (except I could only teleport myself of course) But, one week ago, I was sent a message to an AU party, which lasts 9 days long. I just hope Ink is okay, and Error won't kill Blue and/or Fell. They start tomorrow, I am really excited yet terrified. In anticipation, ~Dream Sans Warning: Abuse Feels Deadly illness