1 - 20 of 1,808 Works in Underswap Sans (Undertale)

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  1. Tags
    Summary

    Re-upload

    Iris and Val get sucked into Undertale with no way out, to make matters worse all the skeletons don't trust them, not even the nice ones. Good thing is both of them got sucked in so they can keep each other company.

    Also they aren't human.

    Language:
    English
    Words:
    4,417
    Chapters:
    1/?
    Bookmarks:
    1
    Hits:
    2
  2. 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:
    80,261
    Chapters:
    38/?
    Comments:
    181
    Kudos:
    693
    Bookmarks:
    148
    Hits:
    24110
  3. Tags
    Summary

    A collection of drabbles requested from Tumblr and Ao3 comments. NSFW requests will have an addition to the title and a note at the beginning of the chapter for those who would prefer to avoid them. Content will be tagged by chapter.
    My Tumblr: vex-bittys

    Language:
    English
    Words:
    19,169
    Chapters:
    22/?
    Comments:
    142
    Kudos:
    288
    Bookmarks:
    23
    Hits:
    6602
  4. Tags
    Summary

    Red’s brother has a way of always getting what he wants, and what he wants now is Stretch. No doubt Edge is going to make it happen, Red stands back and lets him work. But when it becomes clear that Stretch is replacing Red as the most important thing in Edge’s life, Red can’t help but feel a little put out.

    Sans, on the other hand, is missing his brother badly. Papyrus is away at school, leaving Sans alone and miserable. When he stops showing up to group gatherings despite his promise to Papyrus to always go, Red finds himself surprisingly concerned. Sans won’t respond to any of Red’s attempts at contacting him, so in frustration Red decides to go confront him. When he does, he finds out the dangerous secret Sans has been keeping and realizes it’s up to him to help.

    A story told in 100 words a day.

    Language:
    English
    Words:
    3,200
    Chapters:
    32/?
    Comments:
    204
    Kudos:
    130
    Bookmarks:
    9
    Hits:
    1976
  5. Tags
    Summary

    When a certain forced God of Destruction falls through the Void into Errata's multiverse heavily injured, Errata takes the broken god under their wing.

    NOTE: Smut chapters, which are ALL skippable, will have asterisks in front of the chapter title! For example, it will look like this: **Chapter Title

    [F!god by Harrish96 and Errata (ATM universe) by Devcipher]

    Series
    Language:
    English
    Words:
    139,922
    Chapters:
    22/?
    Comments:
    347
    Kudos:
    287
    Bookmarks:
    52
    Hits:
    5949
  6. Tags
    Summary

    new summary:
    A long time ago, a skeleton with black tattoos found themselves alone in a white void, in one story, that skeleton went and became beloved by the multiverse that he protected, but in another, in this multiverse, that skeleton never took that journey, and stayed hidden, avoiding attention, the multiverse remaining unaware of their existence for years and years and year...

    until someone, dream, noticed.

     

    (old summery:
    I always liked the image of ink being a homeless hobo skeleton creature with no sense of shame or social norms, having no idea how to math because they have no actually education and basically clinical insane, I also like to imagine that by following his rule of "don't interfere with the goings on of the multiverse" he would act feral as fuck, So this is exactly what this is, dream and blue basically trying to tame the multiverse guardian ink. but like way more plot based)

    Series
    Language:
    English
    Words:
    40,159
    Chapters:
    16/?
    Comments:
    191
    Kudos:
    353
    Bookmarks:
    52
    Hits:
    5554
  7. 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:
    35,776
    Chapters:
    146/?
    Comments:
    4613
    Kudos:
    917
    Bookmarks:
    74
    Hits:
    21134
  8. Tags
    Summary

    It has been one month since fifty AUs were DELETEd without explanation. Ink is summoned to Blue’s AU by an emergency call and fears the worst. When he arrives, the AU is safe and Blue, Core, and Dream convince him to stay for a while.

    They were not the only ones waiting for him.
    Ink's brother is so happy to see him. Everyone else? Not so much.
    S̶͔̄o̵͎͊o̴͉͂n̴͎͒ ̷̠̄ï̷̠t̷̜̊ ̵̳̀ẅ̸̩́i̵̻̊l̵̖͗l̷̹̎ ̷̢̕b̴͓̔e̴̜̽ ̷̳͝ṯ̸̐í̷̹m̷̙̎ě̷̫ ̸͚͒t̸͇̕ǒ̶͜ ̵̻͠b̴̅͜r̸̙͊i̸̪͂n̷̗̂ġ̷̬ ̴̡̒t̵͓̏r̴̢͒u̶̲̒ẻ̶͉ ̶̪̋"̸̢͠j̶̘̃u̷͒͜s̶͍̊t̴̢͘i̶̘̇c̸̗̑e̴͕͘"̵̢̈ ̶̰͝t̷͙̏õ̴̤ ̷͇̀t̷̫̂h̶͚̏ḙ̴͊ ̸͔͂M̸̜͠u̴͚̒l̸̲̈ṫ̶̯i̴̛̪v̷̰̿ē̶̳r̶̮̒s̷͎̍e̶̯̿.̷̮̄

    Series
    Language:
    English
    Words:
    11,342
    Chapters:
    2/?
    Comments:
    16
    Kudos:
    56
    Bookmarks:
    4
    Hits:
    179
  9. Tags
    Summary

    Palette is being haunted by nightmares of drowning an in ocean so black it stains his very hands, after months of the same dream it starts to wear him down. He finally has enough and decides to steal Ink’s broom and start off on his first adventure. He has no idea where he’s going or why this crown is haunting him, but he is determined to find the owner of the crown.

    After finding out a truth that his father had been hiding for him, Palette’s goal changes.

    His goal is to bring his uncle home.

    Language:
    English
    Words:
    38,453
    Chapters:
    17/?
    Comments:
    35
    Kudos:
    72
    Bookmarks:
    15
    Hits:
    1020
  10. Tags
    Summary

    I hope to get this done!

    Skeletons and different aus random around the worked and some guardians watching over and some to end...

    Language:
    English
    Words:
    5,627
    Chapters:
    3/?
    Hits:
    59
  11. Tags
    Summary

    You were the assistant to Alphys, her co-worker tinkered on a very curious machine in the same department you worked at, incidentally that co-worker was your chosen soulmate. His name? Sans, Sans the skeleton. You didn't really spend any time with him or rather he was purposefully avoiding you, knowing that he also knew you were soulmates tethered by a soulmate connection. The only reason he allowed you to be around was mostly because of your ability to put things into your memory with excellent accuracy to remember important things like a certain blueprint or a recipe for medicinal use. You had tried multiple times to befriend Sans but everytime he looked quite uncomfortable so you stopped trying to force him into a friendly relationship. One night you had been left alone with the curious machine as you had leftover work to do and one event led to another.

    You wish you hadn't cut the string.

    Language:
    English
    Words:
    29,609
    Chapters:
    3/24
    Comments:
    5
    Kudos:
    41
    Bookmarks:
    7
    Hits:
    268
  12. Tags
    Summary

    A win for Error and he couldn't be more proud of it. Ink had looked so angry when the universe had collapsed.
    Ink doesn't take too kindly to people touching his things, especially when they destroyed them. Error had been one of those people for far too long.
    Maybe it was time to teach Error a lesson.
    __________________________________________________

    ⚠️Trigger warning!⚠️
    This story contains rape/non-con, violence, kidnapping, BDSM, torture, abuse, suicide, and self harm
    __________________________________________________

    ⚠️Important Notice⚠️
    I do not condone any of the illegal and violent acts performed in this book, I do not agree with them, they're purely for venting for me/entertainment purposes and are 100% fiction. I do not approve of such things being committed by a person in the real world.

    Language:
    English
    Words:
    31,706
    Chapters:
    17/?
    Comments:
    42
    Kudos:
    250
    Bookmarks:
    22
    Hits:
    6834
  13. Tags
    Summary

    Blue works in pediatrics as a caregiver, trying to reassure children the best he could. Most of the time, he is loved by the children... But he also has a secret... He is friend with the Grim Reaper! So when he knows that a child won’t make it, he becomes his assistant and help them to accept their death...

    Language:
    English
    Words:
    3,600
    Chapters:
    1/1
    Kudos:
    12
    Bookmarks:
    2
    Hits:
    60
  14. Tags
    Summary

    Your were so happy when your big sister let you stay with her

    Now your not so sure

    Language:
    English
    Words:
    1,283
    Chapters:
    2/?
    Comments:
    3
    Kudos:
    26
    Bookmarks:
    3
    Hits:
    506
  15. Tags
    Summary

    Dying seemed like a viable option after spending days in a collapsing universe. Nightmare had other plans.

    Language:
    English
    Words:
    3,480
    Chapters:
    1/?
    Kudos:
    8
    Bookmarks:
    3
    Hits:
    45
  16. Tags
    Summary

    Mia is a 12 year old kid, living in a normal house in a normal life, but she hides a secret that is actually really important.

    She is…reincarnated.

    A crossover with the sans aus because I am now in my Undertale phase

    (CROSSPOSTED ON WATTPAD https://www.wattpad.com/myworks/327798820-reincarnated)

    Series
    Language:
    English
    Words:
    14,960
    Chapters:
    14/24
    Kudos:
    2
    Hits:
    84
  17. Tags
    Summary

    Tale as old as time, Sans' machine fucks up and brings his alternates and their brothers to his universe. A universe away, their mage soulmate's powerful soul fuels the machine. In the process, their soulmate's soul breaks. A month later, another failed attempt brings their soulmate to them, leaving one more being in the wrong universe. Together, the mage and the gang of skeletons must navigate fixing the machine, sending everyone home, a broken soul, and budding relationships.

    Language:
    English
    Words:
    26,707
    Chapters:
    6/?
    Comments:
    3
    Kudos:
    18
    Bookmarks:
    5
    Hits:
    220
  18. Tags
    Summary

     

    The Guardian and Protector of Positivity, Dream, is a simple sort of spirit who just wants to keep people alive, safe and happy. When his brother and fellow Guardian, Nightmare, is corrupted by the magic of the Tree of Feelings, things begin to be a little more complicated. They are forced to flee the village they spent their entire lives in and learn that the world is far more immense than they ever could have imagined.

     

    When a kind (and vaguely suspicious) stranger opens their doors to them, the twins find themselves apart of something much bigger than themselves, a puppet show where everyone is trying to pull the strings.

     

    After all, the only thing that matters is that the audience is entertained.

    Language:
    English
    Words:
    62,202
    Chapters:
    23/?
    Comments:
    267
    Kudos:
    238
    Bookmarks:
    33
    Hits:
    4199
  19. Tags
    Summary

    In order to summon a small version of your Soulmate you need few ingredients: Milk, a Love Bloom flower, a small fragment of your soul and a monster to perform the ritual.

    You wanted to feel less lonely in your apartment.

    You did not expect to find yourself with your hands so full.

    Language:
    English
    Words:
    15,863
    Chapters:
    15/?
    Comments:
    640
    Kudos:
    1511
    Bookmarks:
    302
    Hits:
    24073
  20. Tags
    Summary

    They were stuck in a game-all if them. Some romance dating game,which was a hard revelation to Runo. Runo who was the ‘best friend’ of the heroine y/n. Runo who is me and I’m destined to a tragic end. Well,that is unless y/n gets the harem ending. Now begins my journey-to make sure y/n gets that skeleton ass!

    Language:
    English
    Words:
    995
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    11

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