1 - 20 of 321 Works in Sans (Undertale) & Reader

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  1. Tags
    Summary

    Oh wait no, there it is!

    Series
    Language:
    English
    Words:
    2,042
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    11
    Bookmarks:
    2
    Hits:
    66
  2. Tags
    Summary

    Simple small talk between you and a living skeleton leads to a quotidian aftermath.

    (A short Undertale fanfiction, taking place ten years post Frisk breaking the Barrier. Told in thirty parts, with approximately four-hundred to six-hundred words per chapter.)

    Language:
    English
    Words:
    8,730
    Chapters:
    18/30
    Comments:
    9
    Kudos:
    96
    Bookmarks:
    6
    Hits:
    963
  3. Tags
    Summary

    You were a normal person; you had a job, 2 dogs, some tattoos, a nice house, and a few close friends who shared your interests.

    So who would've thought that it could and would change so much in a single night? Maybe your roommate-she had the freakiest ability to tell when things would happen-but definitely not you. Not all of the changes are good, either. Just how are you supposed to handle this?

    You don't know for sure, but you sure as hell are doing your best.

    Language:
    English
    Words:
    14,037
    Chapters:
    6/?
    Comments:
    14
    Kudos:
    33
    Bookmarks:
    6
    Hits:
    342
  4. Tags
    Summary

    You played it over and over with no real objective. You did the same thing every time. Sometimes, you felt bad for resetting. Though, that didn’t stop you; it was just a game after all.

    But what you didn’t know, was that someone was getting tired of it.

    Language:
    English
    Words:
    2,934
    Chapters:
    3/?
    Comments:
    5
    Kudos:
    13
    Bookmarks:
    1
    Hits:
    161
  5. Tags
    Summary

    Two years ago you were stolen away from your friends and family - that is, if you even had any. Now what you can remember is the pain of DT injections, dust on your hands and the dark damp square of your holding cell. But They have made mistake when They asked you to kill the King of the Monsters.

    The Facility and their crimes against Monsterkind won't be hidden for too much longer. Even if it means that you go down with them.

    ---

    Story summary subject to change.

    Language:
    English
    Words:
    2,405
    Chapters:
    1/?
    Comments:
    9
    Kudos:
    13
    Bookmarks:
    2
    Hits:
    88
  6. Tags
    Summary

    a few years after the barrier fell, when monsters and humans were finally coming together, a gruesome incident forces mankind to rise against them once again. this time, its best chance at sending them running are the hunters, humans belonging to an organization specializing with dusting the things that go bump in the night. you're one of those hunters, tasked with a mission that might turn everything you believe in upside down and inside out. but you were taught better than that and you'll be damned if you let anything affect your resolve.

    but sometimes, you come to notice, the real monsters are the ones wearing the masks.

    it's...better than it sounds. and it will pick up after the first chapter, which is a bit of a bumpy ride. put this up to see how many peeps like this idea and roll with it if I get enough positive feedback. thanks!

    Language:
    English
    Words:
    21,159
    Chapters:
    6/?
    Comments:
    60
    Kudos:
    90
    Bookmarks:
    18
    Hits:
    794
  7. Tags
    Summary

    (New Summary)

    Undertale? Of course, you’ve heard of it. Who hasn’t heard of that popular video game? You’ve read more fanfics for that game than you can count. You never once considered that it was more than just a game, though. It’s not until you suddenly wake up in the world of Undertale that you realize that the characters are actually real.

    Amazing as this is, you can’t help but be concerned about how you got there. One minute you're walking to class, and the next you're waking up in the snow. And, if appearing in Undertale wasn’t already a big enough shock, you keep AU jumping and ending up in different Undertale-based worlds!

    While you have no problem with meeting the different versions of everybody’s favorite skeletons, you quickly realize something weird is going on in each world you visit. Something that’s causing a lot of trouble and damage. Looks like you won’t be able to go home until you figure this mess out.

    Well, at least you get to befriend some cute skeletons along the way.

    Wait a minute! What the hell is wrong with your soul?!!

    Language:
    English
    Words:
    159,801
    Chapters:
    24/?
    Comments:
    554
    Kudos:
    607
    Bookmarks:
    93
    Hits:
    8216
  8. Tags
    Summary

    A story where the reader is thrown into the game of Undertale...but with a twist. Not only do they have to try to guide Frisk through the underground, but they have to do it in a body that is not their own.

    With time running out, you better be prepared to get to the root of the problem...get it? Cause you're a flippin flower!

    Note: takes place in an alternate reality where Undertale was never launched and only one copy of the game exists.

    Language:
    English
    Words:
    193,983
    Chapters:
    46/?
    Comments:
    1088
    Kudos:
    1203
    Bookmarks:
    147
    Hits:
    15720
  9. Tags
    Summary

    You haven't had an easy life. You are haunted by your past and you have nobody to rely on. It's hard to survive on the streets, but you can't do anything else as trying to look forward.

    But your life change, when the long forgotten monsters return to the surface and you meet two skeletons. Trusting is something very difficult for you and the voice in your head keeps reminding you that you're not worth it.

    Will your life change for the better, or will they leave you behind like others have before?
    Is it even possible for you, to live a normal life, after everything what has happened in the past?
    Maybe there is some hope even for you.

    Language:
    English
    Words:
    5,720
    Chapters:
    2/?
    Kudos:
    10
    Hits:
    118
  10. Tags
    Summary

    When journeying to a secluded part of the Underground's marsh, Sans discovers that the echo flower that never spoke acts as a sort of conduit to the surface, even if only small children can access it, and through this, Sans gains a pen-pal, and a friend...

    Everyone's around 6-10 years old in this, so be warned. And there's going to be a few OCs that aren't going to be important to the plot...

    Language:
    English
    Words:
    1,287
    Chapters:
    4/4
    Comments:
    8
    Kudos:
    32
    Bookmarks:
    3
    Hits:
    312
  11. Tags
    Summary

    Sans and his human have some differences. Sometimes they're cute, sometimes they're funny.

    Language:
    English
    Words:
    1,149
    Chapters:
    3/?
    Comments:
    22
    Kudos:
    53
    Bookmarks:
    3
    Hits:
    604
  12. Tags
    Summary

    “Welcome to Ebott City” you were pretty sure that you were looking like a crazy person by now with how much your cheeks were hurting you at the bigger grin that was plastered on your face, eyes shining with accomplishing something you never thought you would do.

    Go and live in a city that had been founded by monsters five years ago.

    Language:
    English
    Words:
    17,332
    Chapters:
    5/?
    Comments:
    18
    Kudos:
    80
    Bookmarks:
    18
    Hits:
    999
  13. Tags
    Summary

    Papyrus has been spending a lot of time away from the house and going deep into the snowdin forests. At first Sans didn't think anything of it until he didn't come home one night.

    Series
    Language:
    English
    Words:
    19,698
    Chapters:
    9/?
    Comments:
    4
    Kudos:
    214
    Bookmarks:
    8
    Hits:
    1147
  14. Tags
    Summary

    As a budding researcher with an inclination toward matters of the SOUL, it's only natural I'm drawn to him.
    Too bad the past just won't stay dead. For either of us.

    Chapters with explicit content have warnings in notes.

    1: (45/45)
    2: (3/?)

    Language:
    English
    Words:
    102,248
    Chapters:
    48/?
    Comments:
    550
    Kudos:
    663
    Bookmarks:
    98
    Hits:
    11668
  15. Tags
    Summary

    You fell into Mt. Ebott. But you didn't survive.

    Clinging onto life with only your soul, you simply exist. You wait for a purpose, a proper purpose.

    But when bad things start to happen, you are taken in by the monster that saved your soul.

    Will this be your purpose? To make a monster more powerful? Or are you meant for something far greater?

    Language:
    English
    Words:
    8,388
    Chapters:
    5/?
    Comments:
    10
    Kudos:
    52
    Bookmarks:
    4
    Hits:
    383
  16. Tags
    Summary

    A shy bookshop owner is corned by a loud, overbearing skeleton. What happens when an introvert meets the most extroverted person on the planet?

    Language:
    English
    Words:
    46,981
    Chapters:
    12/?
    Comments:
    239
    Kudos:
    267
    Bookmarks:
    55
    Hits:
    2995
  17. Tags
    Summary

    The monsters wonder why they thought humanity could have changed, why they believed a small child's words that their species were not the same evil creatures that they had been thousands of years ago. Why they allowed themselves to hope. As they are torn from loved ones- from family- thats all they can ask themselves. Why.

    -----

    You are a nobody, a small-town waitress just trying to get by. You don't expect anything to ever happen to you. But one day you find a man living in a cardboard box behind your diner. No, not a man, a monster. And this monster doesn't have a collar. What's a girl to do?

    Series
    Language:
    English
    Words:
    81,808
    Chapters:
    24/?
    Collections:
    2
    Comments:
    295
    Kudos:
    573
    Bookmarks:
    100
    Hits:
    7452
  18. Tags
    Summary

    You kinda ended up in an alternate universe because of your godforsaken curiosity and have a lavender colored spot under your left boob ever since. But it's all good! You got back to your original universe. Up on the surface. Yeahhh, all good... if you scrap out the part that it turns out some huge shit happened to your soul during the process and now you've got to live with that spot which is fine and all... unless you consider the side effects of your trip into an even more messed up version of the underground, or how Sans calls it, "what humans probably think the underground was like".

    // Classic Sans and Underfell Sans are both in this story, so prepare yourselves for a lot of mixed feelings

    Language:
    English
    Words:
    46,617
    Chapters:
    21/?
    Comments:
    129
    Kudos:
    207
    Bookmarks:
    47
    Hits:
    3310
  19. Tags
    Summary

    God that is the longest title I have ever made for a story of mine ever. It is thus subject to change.

    You are a well known scientist, very well respected and renowned. Monsters surfaced from the underground a little over a year ago, and one of the children's books you wrote on marine biology causes you and certain skeleton monster to become friends.

    But you are the first human scientist to start studying and researching magic and souls. Not only is there human bigots to deal with that don't want you to legitimize anything that has to do with monsters, but there is soon a call for help from the one ecosystem you never even knew existed, if you can even call it that.

    The Void.

    Language:
    English
    Words:
    2,592
    Chapters:
    2/?
    Comments:
    15
    Kudos:
    55
    Bookmarks:
    6
    Hits:
    396
  20. Tags
    Summary

    You are Sentinel, a human involved with the monster mob for the last year of your life. It's taken that time to gain the trust of Boss, Undyne, Grillby, and the rest of the monsters, the only human included in their inner circle. But this only makes you a bigger target to the rival clans and mobs. Someone is working to force the monsters back to the Underground, the prison of their once and former King, and will stop at nothing to do it.

    You'd give your very Soul to keep it from happening.

    - Reader is nicknamed and gender neutral pronouns used where necessary -

    Series
    Language:
    English
    Words:
    31,731
    Chapters:
    38/?
    Comments:
    227
    Kudos:
    182
    Bookmarks:
    33
    Hits:
    4288

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