1 - 20 of 1748 Works in Underswap Sans (Undertale)

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  1. Tags
    Summary

    Cross was made by X!Gaster and needs therapy.
    X!Gaster is a rich dude with bad obsessive and possessive qualities.
    Ink is nice but becomes an asshole later on.
    Blue is the local therapist.

    Series
    Language:
    English
    Words:
    2,141
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    8
  2. Tags
    Summary

    Years after the monsters are released from Mount Ebott, humans are still struggling with this change and accepting them into society. With tensions growing on either side, Y/N a young man who's a sloppy drunk is thrown head first into the fray when a certain skeleton helps him after a nightly blackout. Will he find love and family in the chaotic household he's introduced to or will his tumultuous past and addictions stop him from finding happiness?

    Language:
    English
    Words:
    4,196
    Chapters:
    1/?
    Kudos:
    6
    Bookmarks:
    2
    Hits:
    33
  3. Tags
    Summary

    You've always been average. Average job, looks, and life. That all changes when you go to a store and bring back plushies of your favourite characters. They were cheap too...guess the store clerk didn't want them hanging around. Probably because they're "haunted".
    ...they don't mention these things at the checkout.

    (Also on Quotev!)

    Language:
    English
    Words:
    30,699
    Chapters:
    21/?
    Comments:
    63
    Kudos:
    310
    Bookmarks:
    62
    Hits:
    4882
  4. Tags
    Summary

    The monsters are free from the underground, but they didn’t all make it. Papyrus, Sans younger brother is dead, leaving Sans to care for the two children he left behind. After a long night of work Sans finally relents and hires a nanny/housekeeper. Enter you, just another human down on her luck and running from her past. this job seemed like an easy way to pass the time and get paid until your past inevitably catches up to you. At least that’s what you thought until you started developing feelings for the strange skeletons. Now noises are coming from the shed at night and all these new ‘cousins’ keep turning up. Can you help Sans through his grief? What is he hiding? And what is with this new gaggle of skeletons?

    ************decided to update the rating to mature because, well, we all know where this is going.******************

    Language:
    English
    Words:
    91,930
    Chapters:
    29/?
    Comments:
    252
    Kudos:
    244
    Bookmarks:
    70
    Hits:
    7291
  5. Tags
    Summary

    your bestfriend sans hasn't answered his phone for a few days and you're getting worried. What if it's another depressive episode? you decide you can't wait any longer and go to see him, only when you arrive there is suddenly more skeletons? And some of them scare you more than you'd like to admit.

    Language:
    English
    Words:
    3,713
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    3
    Bookmarks:
    2
    Hits:
    14
  6. Tags
    Summary

    Welcome to the story if new sans! This is were I'll story my ocs I have made! :D

    NEW ADDONS!!
    Ink now has a little brother!
    Error and reaper had a child that look like them (But not a ship x-x)
    And a Skeleton who was tested in the lab! Pls note in future story's there looks may change and there being story of each chapter well also change! P.s forgive my grammar and spelling it's awful I know I like making my own story's ideas and etc and I'm happy to share them all!!

    Language:
    English
    Words:
    7,065
    Chapters:
    6/?
    Hits:
    70
  7. Tags
    Summary

    I have way too many ideas for fanfictions.

    So here's a book(?) of all the ones I've collected and actually wrote down.

    Language:
    English
    Words:
    7,079
    Chapters:
    23/?
    Comments:
    23
    Kudos:
    15
    Bookmarks:
    3
    Hits:
    666
  8. Tags
    Summary

    Error Sans had a very strict schedule. Destroy universes, gather information, visit Dream's castle, relax, attend the Nightmare Gang's meeting, and the cycle repeats. And repeats. And repeats. And repeats. But when his rival pops up during his moment of leisure, things began to change. Error is not prepared for any of this.

    Language:
    English
    Words:
    42,210
    Chapters:
    12/?
    Comments:
    30
    Kudos:
    224
    Bookmarks:
    38
    Hits:
    3339
  9. Tags
    Summary

    ~did you buy a bitty and then realize you were a creepy fuc-
    *Error, you can't just say that to people!

    ~...ugh, fine. did you buy a bitty and then realize you couldn't care for it? do you need a tiny roommate who has big opinions? well, only bitties in the building is here for you.

    *We are the number one--
    ~only
    *--bitty shelter in the Ebbot area! Stop by and ask for me, Ink...
    *Error, you have to say the thing!
    ~... or me, error. this's stupid, ink. 's just us and blue. who else are they gonna ask?
    *Sans works the front sometimes!
    ~ok, fine. asked and answered.

    *Anyway! Stop by for all of your bitty-related needs!

    . . . . .

    { Ink & Error run the only bitty shelter in Ebott City. As such, they're the go-to team when bitties are in trouble. When the police bust an animal fighting ring that includes a bundle of bitties, they have their work cut out for them rehabilitating and finding happy homes for each of them and their, um, special needs while juggling their meddling families and their upcoming wedding. }

    A daily drabble written in 250 words or less per day.

    Language:
    English
    Words:
    21,899
    Chapters:
    89/?
    Comments:
    2565
    Kudos:
    622
    Bookmarks:
    63
    Hits:
    12133
  10. Tags
    Summary

    Teehee smut and angst❤️

    Language:
    English
    Words:
    2,424
    Chapters:
    5/?
    Kudos:
    11
    Hits:
    129
  11. Tags
    Summary

    Finally, Error had done it. He'd snapped and demolished every being in the multiverse. All but one he was able to kill. And that individual was Ink.

    A small-ish drabble that would not leave my minuscule brain alone hElP

    Inspired by TheGrinningKitten’s Bad Things Happen Bingo (Kick Them While they’re down)

    Language:
    English
    Words:
    6,714
    Chapters:
    5/6
    Comments:
    24
    Kudos:
    29
    Bookmarks:
    3
    Hits:
    376
  12. Tags
    Summary

    [Y/N] [L/N] is a powerful mage with a bloodline well-known throughout the ages and her family have always been celebrated. They, however, despise how their bloodline trapped monsters beneath the ground. But, that is for another day. In not being able to afford basic accommodation for university, they had to rely on an old (and terrible) friend named Bethany. For some reason, most of Bethany's skeleton mates despise [Y/N] but why is that? Apart from the fact she is a mage?
    Just because she has a kindness soul, it doesn't mean she will stand for their bullshit.

    Language:
    English
    Words:
    71,864
    Chapters:
    35/?
    Comments:
    165
    Kudos:
    632
    Bookmarks:
    136
    Hits:
    20899
  13. Tags
    Summary

    Well, you know the saying, no good deed goes unpunished. While searching Mt Ebott for a missing child, you and your friends fall into the UNDERGROUND, a place full of monsters, ruled over by an angry queen who wants human souls. A place that, long ago, you yourself had been trapped in. Your choices now will affect the lives of everyone around you, and you’ll learn that the best lost and found stories are not about things, but about people.

    Language:
    English
    Words:
    15,773
    Chapters:
    15/?
    Comments:
    32
    Kudos:
    33
    Bookmarks:
    9
    Hits:
    462
  14. Tags
    Summary

    Sans was so in his head that the resets would start back again, he didn't want to even try. Papyrus put in work to convince Sans that he needed to come to the surface with him, and not continue staying in the underground. Sans agreed to pick out a home with his brother, and began packing his things.

    With only a week left, Sans decided to try pulling his older brother back with the machine one last time, only to have to watch it sputter and stop.
    Sans gave up and packed his stuff, ready and moving out to stay with undyne until their new home was bought.
    His life and a few others really went out of whack because of the machines malfunction, with his sudden influx of brothers and the soulmate bonds that were slowly making themselfs known.

    Even after settling the chaos, shit still hits the fan every time he gets done untangling one mess.

    And the woman that is helping his strange family isn't making anything easier by making things easier!

    Language:
    English
    Words:
    65,599
    Chapters:
    10/?
    Comments:
    125
    Kudos:
    324
    Bookmarks:
    99
    Hits:
    8412
  15. Tags
    Summary

    All he wanted was some henchmen. Some followers to help spread negativity and misery around the multiverse. What he got was unhinged adults who he has to look after like children. And in the multiverse... there are a lot of threats to his boys idiots.

    Language:
    English
    Words:
    42,879
    Chapters:
    5/?
    Comments:
    103
    Kudos:
    350
    Bookmarks:
    76
    Hits:
    4519
  16. Tags
    Summary

    Originally posted on Wattpad, I don’t know how to write a good fanfic so a Ai does it for me

     

    AI: https://dreamily.ai/

    Language:
    English
    Words:
    5,010
    Chapters:
    2/2
    Hits:
    41
  17. Tags
    Summary

    You hate monsters.

    Because of some of the things you’ve heard, and simply because of the way they all seem to dislike you, you hate them. They could kill you in an instant, and the idea persistently haunts you.

    But how can you ignore this fact when they’re suddenly everywhere around you? They’ve infiltrated your workplace, your favorite coffee shop, and you might not know it at first, but a certain few have even started to work their way into your life.

    Language:
    English
    Words:
    4,724
    Chapters:
    1/?
    Comments:
    3
    Kudos:
    22
    Bookmarks:
    6
    Hits:
    169
  18. Tags
    Summary

    [A chatfic taking place between the 6 month timeskip in Chapter 11 of 404, but you probably won't need any context to read this]

    glxtchy 404
    god. This is. 1000000000x worse than when Ink tried to make a group chat whilst high

    stabby
    ink does drugs real?!??!

    glxtchy 404
    ...on sharpies

    stabby
    oh
    laaaame

    xcuse me
    mood

    Another one bites the-
    I think I ate a sharpie once,,

    Series
    Language:
    English
    Words:
    6,323
    Chapters:
    4/?
    Comments:
    25
    Kudos:
    88
    Bookmarks:
    10
    Hits:
    756
  19. Tags
    Summary

    Betrayal’s an interesting concept, wouldn’t you say? It’s a multi-sided die of assumptions and hell. It's saddening how often it happens if to people just because of a small argument that got obscured by rumors, lies, and assumptions.

     

    ___________________________
    SLOW UPDATES
    You have been warned

    Language:
    English
    Words:
    1,397
    Chapters:
    1/?
    Kudos:
    10
    Bookmarks:
    2
    Hits:
    109
  20. Tags
    Summary

    Just as the title says, Sanscest mayhem! This book will include a variety of ships, and I do accept requests. The rules for requesting will be on the first part of this book. I may not accept a request, but that doesn't mean you cannot request again. Feel free to request as much as you'd like, just try to keep them at a point of not being too limiting.

    This will likely be more Cross-Centric since he's my favorite, but, I suppose time will tell.

    (Please do not repost my stories anywhere without permission. And if you do get permission from me to repost, please do credit me)

    Undertale belongs to Toby Fox

    All AU's belong to their original owners, unless I explicitly state that I own an AU.

    All artwork belongs to it's original owners as well, unless I explicitly state that I own the art.

    Language:
    English
    Words:
    19,845
    Chapters:
    16/?
    Comments:
    19
    Kudos:
    97
    Bookmarks:
    6
    Hits:
    2690

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