Underswapsans Stories

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240 Stories

  • Ask Hinto and his family by profi12
    profi12
    • WpView
      Reads 5
    • WpPart
      Parts 1
    Hinto the first-born of Blue and Nightmare Prince of Negativity You can ask questions about him or his family Get to know more about the Nightberry family and how it all happened to be made Ask the kids about their lives and their love life if you like but let's mostly learn about Hinto, sell we Hinto's a mama's boy😉
  • Reborn as Dream Sans [Undertale Multiverse] by DeadEnDead
    DeadEnDead
    • WpView
      Reads 37,624
    • WpPart
      Parts 49
    Reborn as the guardian of positivity, you find yourself in a strange new world, uncertain of what it may hold. Navigating it isn't easy with gods like Nightmare and Error trying to strike you down every step of the way. But unlike the previous Dream, you have nothing to lose, and are determined to forge a better path than the soul whom you have replaced.
  • The Ultimate Betrayal (An Inkmare Story) by Ehshej3br
    Ehshej3br
    • WpView
      Reads 1,408
    • WpPart
      Parts 9
    Nightmare had some issues, big ones. His gang had left for the other side after a series of defeats against the Star Sanses had put them on the back foot. This meant he couldn't gain any more power through spreading negativity. Another issue was that his corruption was slowly fading, he had a feeling this was happening and after waking up to see parts of his own skeleton, he knew his time was limited. His last and probably biggest issue he has, is that a short squid has come knocking on his door scared and very injured On the other side of the multiverse, there was panic and confusion of how Ink could've escaped, and where he could have gone. . . Hello anyone who decided to read description! This is my very first book and to put it plainly I have no idea what I'm doing! All I have is an idea and some determintion, if there is anything I could potentially improve on let me know and I will certainly try to fix the error and amend my writing in the future! One last thing for you guys to know is that updates will most likely be painfully slow, it's unfortunate but this book isn't my top priority so please be patient. Thank you for reading -Eshe
  • Charming. by justasamwich
    justasamwich
    • WpView
      Reads 303
    • WpPart
      Parts 4
    A reader/underswap papyrus fanfic! In the eight months since monsters had returned to the surface, a lot had changed for just about everyone. Little did you know that a certain monster would change your life. This continuation of an old story I wrote years ago! It's also titled Charming, and is on the account Mopiwx5 if you're interested in checking out the original, though I plan on making quite a few story changes.
  • You're pretty Fang-tastic ~High school Sans AU's X lupine reader~ (discontinued) by DragonOkami951
    DragonOkami951
    • WpView
      Reads 3,212
    • 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!
  • Siblings or Rivals by smallmaniac1407
    smallmaniac1407
    • WpView
      Reads 277
    • WpPart
      Parts 5
    this is a story on Dream's and Nightmare's relationship after the incident at dreamtale. something happens to Dream and rhey start rebuilding thier relationship
  • Nightberry  by jeffswifetheknife
    jeffswifetheknife
    • WpView
      Reads 626
    • WpPart
      Parts 2
    Nightmare x blue story
  • Error! Sans x Reader by HcaxlHOB
    HcaxlHOB
    • WpView
      Reads 24,592
    • WpPart
      Parts 13
    You and Error were childhood friends. You guys were inseparable. But... You moved out of town and left Error back at town. you and him. your two unbroken ties were now Broken in pieces..
  • Gravid  by AdderTheWeeb
    AdderTheWeeb
    • WpView
      Reads 990
    • WpPart
      Parts 4
    A nice day in the park, that's all it was supposed to be. Too bad it didn't end that way.
  • Some Dreams Never Come True by Allcapsgurl
    Allcapsgurl
    • WpView
      Reads 6,660
    • 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
  • Edgeberry {DISCONTINUED} by MiniSempaiCuteness
    MiniSempaiCuteness
    • WpView
      Reads 9,095
    • WpPart
      Parts 7
    so hey this story is discontinued im not in the Undertale fandom anymore anyways feel free to continue it by yourself like copy paste it and continue it idk
  • Tangled Up (Error Sans X Underswap Sans) by em_madnezz
    em_madnezz
    • WpView
      Reads 18,051
    • WpPart
      Parts 3
    Like the others it a lemon hehehe the sins This is a request from my friend, Gemtheghost (Who is also on wattpad) P.s: I don't own error sans or underswap sans
  • Delusion - Underswap AU by nemesis_hunter
    nemesis_hunter
    • WpView
      Reads 167
    • WpPart
      Parts 3
    Papyrus knows that Sans, or Blue as he liked to be called now, can handle himself. All Sanses can. But he just can't get that memory out of his head, Sa- no, Blue's head falling off his shoulders, Chara's face devoid of their cheerful smile. While trying to be the best big bro he can, will Papyrus burn down their relationship regardless? (or, Orange struggles to handle the realization that Blue is growing up, while Blue fails to understand what Orange has been through)
  • {"stalker?No, I Watch."}Tempink by FuckyFuckOwO
    FuckyFuckOwO
    • WpView
      Reads 262
    • WpPart
      Parts 1
    Read this before reading the fic please. |||THIS IS TEMPLATE???X INK???? BTW??? THE AMAZING ARTWORK IS BY DREEMURR-SKELEMEMER IM SORRY THAT I USED IT WITHOUT PERMISSION HNGH.||| [This is partially inspired by some tempink written by azure-night-owl on Tumblr. Well, the first part of this atleast.] *this takes place in an au of those where there are you know, most of the characters living in one big place and stuff being more normal. *There's some unrequited Blue x Ink, along with TW!!! -Past- toxic Errink. *Uh it's p gay. They're gay weenies. What did you expect.
  • Only Time Will Tell by Dovey0Artsy
    Dovey0Artsy
    • WpView
      Reads 1,180
    • WpPart
      Parts 10
    Nobody noticed what was happening. Nobody noticed until it a was too late. Will they manage to save the Multiverse or is it doomed from the beginning? Well... Only Time Will Tell. "Ready? 3! 2......! 1...........!.." " Z̭̗͗͒͒̾ͦ͆ͦ͝͏̷̢́̀͢͡E̶̢̺ͮ͋͘Rͣ͑̾̅̉̓ͤ̂͢͝͡ͅÓ̵̹ͪ͋͝!̡̝̠̳̟̠͐͗!̸̵̵̵̨̗̞̦͈̪͌̃̋͆!̦̗!!"
  • Adorably Creative (Undertale FanFiction) by Failsona
    Failsona
    • WpView
      Reads 269
    • WpPart
      Parts 1
    As usual, Sans comes back from training, happy and excited, except this time, he arrives home 'marked'. Papyrus is not pleased, until he finds the creative little secret his brother was trying to hide~ Set in Underswap Universe.
  • Under swap! Sans X Swapfell! Papyrus (FONTCEST) by Wildcatlovely
    Wildcatlovely
    • WpView
      Reads 6,610
    • WpPart
      Parts 1
    Oh boy.... My first story and I sinned. Lord forgive me XD. But anyway, if you like this, please let me know and I'll make more chapters!
  • Darkest Child (ErrorMare) by Stargamerxox
    Stargamerxox
    • WpView
      Reads 724
    • WpPart
      Parts 5
    (the cover is a picture of my oc EveFalcity, an ErrorMare child) 3 years after he moved out and Error finally was back in Nightmares mansion. Despite not living there for three years he had been with Nightmare all three years and now he was keeping a secret. that secret took the place of a small child, his daughter EveFalcity. at the time she was only a year old and Error realized 1 thing. If she grew up around her father, around stronger negativity, she could become too powerful for either parent to handle. sadly with that in mind Error made a large decision. Nightmare couldn't know about EveFalcity.
  • Underswap! Papyrus x Shy! Child! Reader by Martinuxita3111
    Martinuxita3111
    • WpView
      Reads 360
    • WpPart
      Parts 1
    You fell down in the underground. You met a goat man whose name is Asgore. You fought him so you could get outside, even though he warned you not to. How dangerous can it be?
  • So "Berry" Pure (Underswap!Sans x Reader) by teddybeare12
    teddybeare12
    • WpView
      Reads 73
    • WpPart
      Parts 2
    You're an aspiring journalist with a not so interesting life, but when you're able to score the opportunity of a lifetime to be one of the first to interview the newly freed monsters, you meet the skeleton brothers. Needless to say, you're instantly in love.