1 - 20 of 305 Works in Sans (Undertale) & Original Character(s)

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  1. Tags
    Summary

    The way of a Glutton is a non-canon Reader insert story that takes place in the story of Red Mass, a self AU of Undertale.

     

    You are getting a new job in the City of Paradise, the City of which Sans (Dee) and Frisk built.

    Although you want to work in the city laboratory and also fulfill your dream of studying magic, you also get to know more monsters that you have ever seen in your life. And maybe your dorky skeleton boss asks you out on a date?

    This story will contain lots of drama, blood and tears.

    So be excited for it!

    Series
    Language:
    English
    Words:
    49,426
    Chapters:
    10/?
    Comments:
    3
    Kudos:
    23
    Bookmarks:
    3
    Hits:
    503
  2. Tags
    Summary

    You fall after genocide. It’s been years, perhaps centuries since the final monster breathed their last.

    No one is left.

    You venture forth with only ghosts and memories to keep you company as you slowly lose your mind in the empty Underground.

    Language:
    English
    Words:
    817
    Chapters:
    1/?
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    34
  3. Tags
    Summary

    This is a one-shot fanfiction featuring Mafiafell Sans and my original character, Yoru Felidae—or more accurately, a self-insert version of myself. I couldn’t resist the urge to create a story about him and me because I absolutely FUCK with this character.

    While Yoru might not be a relatable character for everyone, as her specific body type, skin color, eye color, and hairstyle are detailed in the story, I hope you’ll still enjoy reading it. I wrote this purely for fun, but having someone else read it would mean so much to me.

    Thank you, and happy reading!

    Language:
    English
    Words:
    7,983
    Chapters:
    1/?
    Hits:
    12
  4. Tags
    Summary

    This story is about two people from Night City who were accidentally pulled into the world of Undertale with the help of a small device.
    By messing around with forces they don't understand, they're messing with part of the multiverse.
    Together with new acquaintances, they manage to find friends in this strange world and get the feeling of a life that they have never had before...

    Language:
    English
    Words:
    5,192
    Chapters:
    1/?
    Kudos:
    1
    Hits:
    17
  5. Tags
    Summary

    In dieser Geschichte geht es um zwei Menschen aus der Stadt Night City, die mit der Hilfe von einem kleinen Gerät unabsichtlich in die Welt von Undertale gezogen wurden.
    Durch das Rumspielen mit Kräften, die sie nicht verstehen, bringen sie einen Teil des Multiversums durcheinander.
    Gemeinsam mit neuen Bekanntschaften, schaffen sie es jedoch in dieser fremden Welt Freunde zu finden und bekommen das Gefühl von einem Leben, welches sie so vorher noch nie hatten...

    Language:
    Deutsch
    Words:
    5,357
    Chapters:
    1/?
    Hits:
    8
  6. Tags
    Summary

    You may know this song and dance by now, the stories where a creator gets dropped into the Undertale multiverse and makes some skeletal friends.

    More than a few stories exist where a creator is dropped into a 'skeletons stuck in a certain world' scenario.

    Fewer still are the tales of creators becoming skeletons themselves.
    ___

    I joined the Undertale fandom a long time ago, but when I started writing down some ideas I had, I never would have expected joining it to be meant in a literal sense, and I definitely would not have expected my sibling to join me on our adventure.
    Now rated T for certain topics inherent when talking about some sleletons' backstories

    Series
    Language:
    English
    Words:
    47,591
    Chapters:
    19/?
    Comments:
    132
    Kudos:
    646
    Bookmarks:
    160
    Hits:
    18,728
  7. Tags
    Summary

    Recently divorced and too proud to tell anyone how bad she's really doing, the last thing Jennifer wants is a Bitty.
    Luckily, she doesn't get a vote.

    Language:
    English
    Words:
    367,207
    Chapters:
    175/175
    Comments:
    2,627
    Kudos:
    1,097
    Bookmarks:
    197
    Hits:
    38,158
  8. Tags
    Summary

    you swore off fostering bitties as long as you lived yet fate seems to have other plans as you find a cage fulled of dumped breeder bitties, seeing their state, you felt like you had to see things through.

    Language:
    English
    Words:
    6,433
    Chapters:
    4/?
    Comments:
    11
    Kudos:
    81
    Bookmarks:
    17
    Hits:
    780
  9. Tags
    Summary

    Dalil didn’t grow up loving One Piece. In fact, they hated it as a kid—couldn’t stand the art style. But one day, with nothing better to do, they gave it a shot. And, to their surprise, they fell in love. The themes, the characters, the grand adventure—it all spoke to them in ways they hadn’t expected. Still, it was just a story. That’s all it ever was.

    Until it wasn’t.

    One moment, they’re stepping into their house, and the next, they’re stranded on a deserted island in the middle of the sea. When their blood runs gold dust, it’s clear—this isn’t just a random island. And it becomes clearer still when one of the fruits on the island becomes a Devil Fruit.

    And Dalil realizes that this is One Piece universe. And Dalil is in way over their head.

    Rescued by a legendary pirate crew but knowing they can’t stay, Dalil sets their sights on something greater. When a pun-loving skeleton from a shattered timeline crashes into this world as well, it solidifies their goal: to create a crew of Outliers, people like them who have been ripped from their worlds with no way back. Dalil will offer them a home, a family, and maybe, just maybe, they’ll change a few fates along the way.

    Language:
    English
    Words:
    13,685
    Chapters:
    10/?
    Kudos:
    1
    Bookmarks:
    1
    Hits:
    56
  10. Tags
    Summary

    The struggle of babysitting your best friend’s little brother and being a college student. Especially in a house full of skeletons that seem kind of stand-offish towards you. It’s not all bad, you’re able to afford rent, you have fun with the kid, and you’re getting good grades. You just gotta hold on until you graduate college and until the kid graduates high school.
    Just a few more years.

    Language:
    English
    Words:
    25,977
    Chapters:
    7/?
    Comments:
    15
    Kudos:
    134
    Bookmarks:
    21
    Hits:
    2,263
  11. Tags
    Summary

    When Jane Ainsley finds herself trapped with monsters Underground, it's hard not to fall into old habits. The kindnesses of monster-kind make it easy to become complacent, when she had spent so long avoiding companionship. However, the ever-present pull of the Void keeps her moving forward, towards someone only she can SAVE. In helping Dr. W.D. Gaster find themselves once again, can Jane form her own sense of identity?

    An isekai-adjacent story starting Underground and featuring an anomaly that is not our narrator.

    Language:
    English
    Words:
    36,947
    Chapters:
    7/?
    Comments:
    5
    Kudos:
    12
    Bookmarks:
    3
    Hits:
    238
  12. Tags
    Summary

    Just a oneshot drabble(s?) of Killer and L.S, a character from an upcoming Au of mine. It still is a work in progress, but OH WELLL!!!! Maybe it’ll be more, anyways, the title is their (friend)ship name for now…. You can interpret this as romantic or not.

    Language:
    English
    Words:
    588
    Chapters:
    1/1
    Hits:
    7
  13. Tags
    Summary

    Nightmare didn't understand what came over him when he decided to bring a human child back to his base, now every bad sans (and Error) will have to pitch in to raise you.

    Who knew a fragile human life could change them so much?

    Language:
    English
    Words:
    15,727
    Chapters:
    11/11
    Comments:
    15
    Kudos:
    174
    Bookmarks:
    23
    Hits:
    1,915
  14. Tags
    Summary

    What happens when you mix an insane writer’s obsession with Digimon and Undertale. You get fanfiction where a Digimon tamer ends up rooming with a bunch of skeletons while hiding their trouble making little imp.

    Cynebil finally gets into the college major they’ve always wanted, but the college they want is pretty far away. So, after some looking and asking around, an old friend of theirs offers to allow them to stay with him and his friends until they could find an apartment or somewhere else to stay. Cynebil is ecstatic to hear this, but has some doubts when they remember that no one knows about Digimon. Even though monsters have been living on the surface, no one, people or monster, had heard of Digimon.

    So, after some careful consideration, Cynebil figures that they could simply have Zel, their impmon hide and stay in their room most of the time. And he could always be allowed to go outside and walk around on his own when he felt cooped up. It shouldn’t be too difficult to keep one little secret. Especially from… ten skeletons.

    Language:
    English
    Words:
    14,795
    Chapters:
    4/?
    Comments:
    10
    Kudos:
    17
    Bookmarks:
    6
    Hits:
    249
  15. Tags
    Summary

    Nightmare feels the softest of negative emotions in an AU, and meets someone who feels numb, and takes them in, even if they aren’t a sans.

    Or:

    Nightmare finds my oc Aqua and then takes her in.

    Language:
    English
    Words:
    1,134
    Chapters:
    1/?
    Kudos:
    1
    Hits:
    11
  16. Tags
    Summary

    Melody wanted to die. She simply didn't see much point in living. She walked up Mt. Ebott to kill herself that day, not to jump-start a curse that would slowly consume her until there was nothing but a shell left. So, now she has to avoid dying with the help of a little flower and a skeleton in a strange land where everyone seems to want her dead.

    Maybe, along the way, she can find a reason to live.

    or, eleven year old me wrote one of the saddest fanfic ideas i've ever had and nineteen year old me took on the mantle of finishing it with more tact and respect for the subject matter than an eleven year old could.

    Language:
    English
    Words:
    39,436
    Chapters:
    1/1
    Kudos:
    6
    Bookmarks:
    2
    Hits:
    96
  17. Tags
    Summary

    𝘼𝙣 𝙤𝙡𝙙 𝙛𝙞𝙘 𝙄 𝙙𝙚𝙘𝙞𝙙𝙚𝙙 𝙩𝙤 𝙘𝙤𝙣𝙩𝙞𝙣𝙪𝙚 𝙖𝙛𝙩𝙚𝙧 𝙖𝙗𝙖𝙣𝙙𝙤𝙣𝙞𝙣𝙜 𝙞𝙩. 𝙃𝙚𝙧𝙚'𝙨 𝙩𝙝𝙚 𝙤𝙡𝙙 (edited) 𝙙𝙚𝙨𝙘𝙧𝙞𝙥𝙩𝙞𝙤𝙣: Max was better at doing things than you; singing, making friends, romance, school, even having a better relationship with your dads than you could ever have. You tried everything to be the best you could be, but they never noticed you. Even if they did, they always compare your accomplishments with Max's. What's worse is that Max was a wonderful person, he never rubbed any of his talents in your face, or the fact he was obviously the favored child, and was an overall caring brother. Yet, it wasn't enough, and soon you feel like you need to just...give up.

    𝐀𝐑𝐂 𝟏: 𝐀 𝐍𝐄𝐖 𝐇𝐎𝐏𝐄 (𝟏𝟎/𝟏𝟎)
    𝐀𝐑𝐂 𝟐: 𝐈𝐍𝐕𝐀𝐃𝐄𝐑, 𝐓𝐑𝐀𝐈𝐓𝐎𝐑! (8/??)
    𝐀𝐑𝐂 𝟑: ???
    𝐀𝐑𝐂 𝟒: ???

    Series
    Language:
    English
    Words:
    14,318
    Chapters:
    19/?
    Comments:
    36
    Kudos:
    79
    Bookmarks:
    7
    Hits:
    1,057
  18. Tags
    Summary

    Here are some snapshots of your wonderful life with Classic, Creampuff, Red, Edge, Blue, Stretch, Black and Rus as your fathers, as well as your wonderful and thoughtful older brother, Max!
    With such nice guys like these as your family, what could go wrong?

     

    (Everything. Everything goes wrong.)

    ------

     

    ✡︎⚐︎🕆︎🕯︎☼︎☜︎ ❄︎⚐︎⚐︎ ☹︎✌︎❄︎☜︎📬︎ ❄︎☟︎✋︎💧︎ ✋︎💧︎☠︎🕯︎❄︎ ✌︎ 💧︎❄︎⚐︎☼︎✡︎ ✌︎☠︎✡︎💣︎⚐︎☼︎☜︎📬︎ ✡︎⚐︎🕆︎ ✌︎☼︎☜︎ 💣︎☜︎💧︎💧︎✋︎☠︎☝︎ 🕈︎✋︎❄︎☟︎ ☞︎✌︎❄︎☜︎📬︎

    Series
    Language:
    English
    Words:
    103,197
    Chapters:
    92/?
    Comments:
    613
    Kudos:
    276
    Bookmarks:
    36
    Hits:
    8,505
  19. Tags
    Summary

    Well, you were kidnapped (kinda) by the Nightmare Gang!

    But if anything, they’re the best family you’ve ever had.

    Series
    Language:
    English
    Words:
    9,694
    Chapters:
    6/?
    Comments:
    26
    Kudos:
    282
    Bookmarks:
    34
    Hits:
    4,227
  20. Tags
    Summary

    To the outsiders, Mount Ebott, the deep forest and its beach side was cursed. Otherworldly monsters, mythical and powerful beastly monsters at that, roamed the land and caused most of the forest and mountain to be closed off from the outside world and the ocean by the mountain to be terribly dangerous. Those that try to sneak or break in are cursed, punished or never seen again.

    Or

    Undertale Fans Isekai

    Language:
    English
    Words:
    1,794
    Chapters:
    2/?
    Comments:
    1
    Kudos:
    10
    Bookmarks:
    5
    Hits:
    262

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