Undertaleau Stories

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1.2K Stories

  • Siren || Afterdeath || by WerewolfSoup
    WerewolfSoup
    • WpView
      Reads 30,833
    • WpPart
      Parts 18
    Geno is the Captain of one of the most feared pirate crew in the seven seas along side his Quartermaster, or first mate as some call him, Error and Fresh, the Master gunner. While from the first look Geno looks fragile and unfit to lead a crew, he's actually cunning, smart, reliable and skilled in fighting both with swords and pistols. He always kept his word an put his crew first, always listening to their worries and suggestions. Most decisions where decided via vote. While his judgment was always fair and accurate, so where his punishments and no one was able to get away from one if done something wrong. No one was able to hide anything from the captain, he knew a lie when he saw one. Reaper is a siren shunned by his own people for being "too dangerous". I mean it's not his fault that he was born the way he is. And those few deaths where accidents! Yet even if he tried to explain and redeem himself, he was still exiled and every siren or mermaid he meets never come closer, only further away. And so he wonders the seas by himself, doomed to be alone for the rest of his existence. Or is he? [This is inspired by a song "Siren" by Kailee Morgue and I really wanted to write it before I forgot about this Idea.]
  • Frisk The Villan (Undertale X Mha) by nouser65
    nouser65
    • WpView
      Reads 3,398
    • WpPart
      Parts 42
    What if frisk was in the mha universe?
  • Horrortale: Hunger Behind a Broken Skull by Moonlight_Malaysia
    Moonlight_Malaysia
    • WpView
      Reads 245
    • WpPart
      Parts 7
    A person awakens inside Horrortale!Sans's body with no way back. Trapped in a starving monster's world, they must fight Sans's madness, protect a human child, and decide whether to save the Underground... or become its worst nightmare. ♥️ Update once a week. ♥️ Choice-driven story (+ voting time)
  • Murderous Intent? (Horrortale Sans x Male Reader) by Creep_TEETH165
    Creep_TEETH165
    • WpView
      Reads 35
    • WpPart
      Parts 2
    This ain't gonna be some shitty romance story with Horror alright? it's gonna be a gorey murderous mess, he's gonna wanna eat'cha most of the time, AND it's gonna be a male reader, deal. these stories don't exist yet so here we are.
  • The Misunderstanding by EpicBruh1
    EpicBruh1
    • WpView
      Reads 35
    • WpPart
      Parts 3
    Reaper walks over to Geno slowly, "Geno" Reaper whispered, Geno notices Reaper with tears in his eyes. "Reaper! what happened? Are you okay?" He said, 'I- I didn't mean to - whatever I did to upset you - I didn't mean to- I-" Geno cut him off, "Reaper, it's okay. You didn't do anything to upset me, though. ", "But please tell me what happened to your eye. and why you're crying, please." Geno said.
  • CREATORS BEGINNINGS by fizziethefrog
    fizziethefrog
    • WpView
      Reads 3,279
    • WpPart
      Parts 19
    Underverse self insert Includes Y/N's that might actually make sense REWRITE
  • Untitled cocoapowder fic by Kaspppp
    Kaspppp
    • WpView
      Reads 440
    • WpPart
      Parts 4
    i didnt know what to name it, lol. anyways, just to get you informed basically this is an au kinda similiar to soultale i think, i dunno i havent watched it but from what i know of it its kinda similar. both humans and monster live together in... somewhat peace and harmony, and this is also an au where both chara n clover are alive, but like.. all the underground stuff never happened, so chara never died in the first place. i feel like im adding too much so ill just add a info thing, cover art is mine!! i suck at drawing chara lol.
  • GENERATIONS: Lost Links • part two (Freedom AU Book 15)[FNAF/UT] by MapleInk62
    MapleInk62
    • WpView
      Reads 127
    • WpPart
      Parts 12
    Ever since the Anthros' arrival to settle in and make lives for themselves among the Monsters, Newer Home slowly continued welcoming new Anthro faces. A couple being new faces, though many would be family members reuniting with one another at long last. Some more so for the better than others. Many Anthro families have yet to be made whole again, while the reunion of families proves to only prompt more questions to these family mysteries. Mysteries both of family members who have found each other, and mysteries around lost and missing family links-and all are mysteries the Anthros are willing to uncover.
  • WisteriaTale by x_sunshinelight_x
    x_sunshinelight_x
    • WpView
      Reads 3,079
    • WpPart
      Parts 15
    This Au start with a skeleton who has a special hidden magic that no other monsters in his Au have ever seen he named himself as "Sans" but in other sanses from the different Au calls him "Wisteria" Wisteria is the only monster that has special hidden magic but his plant manipulation is very special to him on his Au all monsters in WisteriaTale can create and grow different kinds of plants but, Sans is different instead of creating different kinds of plants he can only grow 1 different kind of plant which is a "Wisteria Tree" that glows brightly when there is no light. But Wisteria doesn't know that his life got changed when he sees something strange inside the ruins. Then Wisteria realized that he could hear his CREATOR'S voice guiding him for his next adventure and journey to learn more about the different kinds of AU's that existed. *CHARACTERS* WisteriaTale characters- Sunshinelight (me) Original! Sans- Toby Fox Alpha! Sans- SHADIKAL15 Error! Sans and Geno! Sans- loverofopiggies / Crayon Queen Horror! Sans- Sour Apple Studios Dust/ Murder Sans- Ask-dusttale Killer! Sans- Rahafwabas Dreamtale Brothers- Jokublog Ink! Sans- Comyet Darrien and nameless kid- Nazmaki / nanazfruit395 and other versions of sanses
  • A Burst of SuperNova by Nanachi8
    Nanachi8
    • WpView
      Reads 32,410
    • WpPart
      Parts 39
    A change can lead to a new outcome, some worse than others or better than expected. When one's curiosity leads to a new life, do you accept the change or destroy it from happening? Well, welcome Error, the very destroyer of AU's to his new role in the infinite multiverse. Welcome him to Parenthood, strap in and have a seat as this will be a bumpy ride. And an eye-opener so to speak.
  • Hunger || Horror!Sans x Cannibal!Murderer Reader by ravengoose
    ravengoose
    • WpView
      Reads 452
    • WpPart
      Parts 13
    A Horror Sans x Reader obviously :3 Some things you should probably know before we start:: † Reader's gender is not specified, and their appearance is up to you. Just don't hate on any specifics I give you. Keep in mind that I do it simply so the story makes sense, and instead of going to the comments and telling us all exactly what you will be wearing, just keep it in your imagination. † The timeline differs from the original Horrortale one. If you have never read the comics, I suggest you do not read this story. This timeline contains violent Aliza, monsters getting to the surface, and other things that didn't and wouldn't happen in the original. Please note that Horrortale and its characters do not belong to me, but to Sour Apple Studios, and the art used for the cover isn't mine either. I believe it belongs to myammya on Tumblr...? † If you haven't noticed yet, in this story the reader is a murderer and a cannibal. There will be descriptions of violence, gore and injury, as well as dark humor. If you are not comfortable with these subjects, please reconsider if reading this is a good idea. Despite me doing a lot of research for this story, I might get some things wrong. Feel free to point out any mistakes, in a polite way of course. If you still wish to read the story, I'm not stopping you anymore. I worked pretty hard on this one and I'm proud of how it turned out. Please do not copy or heavily inspire. Enjoy!
  • Art Book 1 by ClockWorks-ToyHouse
    ClockWorks-ToyHouse
    • WpView
      Reads 1,117
    • WpPart
      Parts 51
    Just some doodles that I did, all the drawings belong to me.if you want to find my tumblr. https://cryingbluez.tumblr.com/ Feel free to possibly say any requests, its hit or miss if I actual do them, also feel free to send any asks about my ocs. I'd love to have more interaction on my art book. Most of the doodles were done on Drawpile or Whiteboard Fox (some doodles done in sai thou) Most of the first full drawings were done in sai, but the iPad drawings are (mostly) done in procreate. My fandoms change a lot, so expect to see a ton of fandoms smashed into this one book. E.g. undertale/undertale aus, Dream smp, Jojo's bizarre adventure, etc. As well as my own oc content, or fandom ocs. DO NOT STEAL MY ART, OR CHARACTERS PLEASE. ASK PERMISSION IF YOU WANT TO USE MY ART PLEASE. I DON'T WANT TO HAVE TO DELETE MY BOOK BECAUSE SOME MOFO STOLE MY ART, DON'T SPOIL IT FOR OTHER PEOPLE. (if you see my art posted anywhere else please tell me)
  • Au sans x reader oneshot by LunaNightmare_69
    LunaNightmare_69
    • WpView
      Reads 5,503
    • WpPart
      Parts 38
    This book will NOT contain smut/lemon, if you want that go to my other book! I also take requests. ⚠️I don't own any of the characters I use!⚠️ I made the cover on Ibispaint.
  • 31 Days Of Crossmas || Undertale AUs  by Firestorm174ga
    Firestorm174ga
    • WpView
      Reads 14,262
    • WpPart
      Parts 32
    31 oneshots featuring Cross, with one being posted each day in December. Prompt list is in the first chapter if you want to try it yourself! Featuring multiple writers, including the lovely Firehedgehog, DarkMidnightDragon, Lunar_Dreamcatcher, Doodis2014 and ChaosDancer12, as well as myself, Snowstorm174.
  • Guilt Tainted Grief by WhispdawnYT
    WhispdawnYT
    • WpView
      Reads 9
    • WpPart
      Parts 1
    No. Something's wrong. Why is Dream feeling and absorbing negativity? This is a Sans AU that I randomly came up with at 12am one night. Dream Sans is basically like Dust/Murder Sans, and teams with Nightmare against Ink 'cause Ink's being Ink. Yeah. That's...Really basically it. Enjoy! Or don't. Doesn't change my life. [ Cover Art does not belong to me!! ]
  • You And Me? (Depressive Error) by EtherealAzyre
    EtherealAzyre
    • WpView
      Reads 709
    • WpPart
      Parts 12
    Found this gem in my unpublished, going to continue it after 2 years :) Error CQ, a depressed new student at lucendell's high school meets Ink Comyet, they don't get along well and after a bit, Ink starts getting concerned about Error as he thinks there's something he's hiding.
  • Lucid Terrors (DISCONTINUED, READ MOST RECENT UPATE) by splatt_the_cat
    splatt_the_cat
    • WpView
      Reads 2,603
    • WpPart
      Parts 21
    (EDIT: the views spiked after i changed the cover by accident so shocked pikachu is staying) - - - Dream goes on a quest to uncover the reasons behind his missing childhood memories, and soon discovers something more sinister lurking in the depths of the Multiverse. Cross, worried after Dream's mysterious disappearance, sets out in search for him, leaving behind a strange project that is not all his own. Error struggles not only with self-destructive feelings, but a potentially dangerous crush. PLEASE NOTE: This fic depicts mental illnesses/disorders/phenomenon as personified characters. One such character was written after an eating disorder of which I no longer feel comfortable writing about. As such edits will be made to mention very little about her inspired condition. If the following are triggering to you in any way I advise you to quit or proceed with caution. -Anxiety, depression, paranoia, PTSD, & sleep paralysis All AU characters belong to their respective owners. All characters originating from this fic belong to me.
  • info about myself and ideas by Lucero1142
    Lucero1142
    • WpView
      Reads 297
    • WpPart
      Parts 14
    here are things I wrote to other writers and ideas like oc characters or other things. updates are random.
  • Weekly Underverse by App1eS0uce
    App1eS0uce
    • WpView
      Reads 1,004
    • WpPart
      Parts 61
    Hello! In honor of Underverse 0.8 part 1 coming out and Jakei's year and a half hiatus, I am going to (try to) do this thing I will be calling "Weekly Underverse" where I update weekly with some sort of Underverse related content. It's not going to be anything big. Some weeks it will be a 3,000 word Cross fic, maybe a digital drawing I worked on for 5 hours. Other weeks might be as small as a snippet of a poem that was inspired by an Underverse thing, or a little doodle I did in my notes packet. It may even be recycled content I have posted outside of this project. But whatever it is, I will try to update it weekly until the hiatus is over. Weekly Underverse starts today, November 20, 2024. Updates will (try to) be every Wednesday. Underverse belongs to: Jael Peñaloza Little note: I am nowhere near an Underverse expert, so most things might be fanon, most things might be Cross focused, but maybe I'll do some learning and write with the other characters. Maybe I'll give fun facts one week. We've got about 78 chances so... we'll see where this goes!
  • 30 Day OTP Challenge: Template x Pale by Sansy-ton33
    Sansy-ton33
    • WpView
      Reads 37,880
    • WpPart
      Parts 30
    Wait, another book about these suckers? Yes, and shut up. Also, don't mistake it for the NSFW 30 day OTP challenge, this is the other one where there is a lot less sex. ALSO it may not be entirely canon, but I try my best and include some head canons of mine. I hope you enjoy!~