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  • Royal Blue
    170K 8K 46

    Sans knows a lot about secrets; he hides many. But when old burdens emerge from the darkness, secrets, new and old, put his brother in danger; and what else can a good big-bro do but begin a double life? This decision haunts him, even years after his suit of armor is stocked away and hidden, after his quaint life of d...

  • Under the Veil
    205K 11.1K 75

    Sans has gotten himself stuck in the void between worlds in a successful attempt to stop the resets of his timeline. He's not sure how long he's been chillin' alone there, but eventually a chance at escape stumbles his way in from the Veil of Death. His name?-Sirius Black.

  • Welcome to the Future
    24.2K 1.1K 40

    For 130+ years, monsters have been extinct with the only things left behind having been their hybrid children. Over the years as the hybrids continued to reproduce and 80% of the world's population went from human to superhuman. With the rise of superhumans came the rise of heroes and villains. AU High. Japan's #1 he...

    Completed  
  • No More (Undertale)
    71.1K 2.9K 13

    For years, Papyrus knows, Sans has had nightmares. Horrible nightmares, nightmares that leave him crying in the dark, crippled in the mind, and barely able to function in life. And that's why Papyrus stays so happy, so bright, for Sans, to keep his brother going through the hard times. But when Papyrus starts having...

    Completed  
  • The Time Before (Undertale)
    362K 20.6K 59

    ~o0o~ Book 1 of the "Better Times" trilogy ~o0o~ (Book two: "A Name to Remember") (Book three: "No One is Happy with This") There was a time where a Royal Scientist got an idea. A time where he created two weapons, who turned out to be people. A time where he built a machine to power the Underground. There was a tim...

    Completed  
  • A Name to Remember (Undertale)
    119K 9K 44

    ~o0o~ Book 2 of the "Better Times" trilogy ~o0o~ (Book one: "The Time Before") (Book three: "No One is Happy with This") Ah. Hello there. You are here in search of a story? ... I could tell you a story of a family, reunited once more, living on the surface world. But such a story has not come to pass, nor do I know ho...

    Completed  
  • No One is Happy with This (Undertale)
    281K 19.8K 91

    ~o0o~ Book 3 of the "Better Times" trilogy ~o0o~ (Book one: "The Time Before") (Book two: "A Name to Remember") Two years after the Barrier was destroyed, it's a dark and stormy night. A group of friends; six monsters, one human, and one flower, celebrate the anniversary of the monsters' freedom. Everything starts of...

    Completed  
  • Reset {UNDERTALE}
    116K 5.8K 19

    *FEATURED STORY* As Judge for King Asgore Dreemurr, Sans has seen a lot of strange stuff. But when he wakes up with the feeling that something is completely wrong, he decides it's time to investigate with the only monster who could know what was happening: Royal Scientist W.D. Gaster.

    Completed  
  • Five Places Sans Most Definitely Should NOT Be Sleeping (An Undertale Fanfic)
    19K 841 5

    Sans falls asleep in some pretty spectacularly weird and inappropriate places. This is just a small collection of those places, from tame spots like the middle of the doorway to stranger places like the inside of his trombone. With a hint of plot in the background.

    Completed  
  • When Two Fates Intertwine (Sans x Reader)
    91.8K 2.5K 13

    [THIS IS A SEQUEL TO MY OTHER FANFIC "WHEN TWO SOULS MEET!" If you haven't read it, I would highly suggest it--the story won't make much sense otherwise.] Sans has finally found someone he can trust--Frisk's sister, the eighth fallen human. After months of step-siding and awkward interactions, the two are finally a co...

    Mature
  • Eccedentesiast
    102K 3.9K 25

    Eccedentesiast Noun Someone who hides behind a fake smile, when all they want to do is hide and/or die. (Cover art is not mine, and full credit to the artist!! (I cant find any active @ to tag them but if you can please let me know so i can give proper credit), Undertale is Toby Fox's, please don't sue me I'm br...

  • Fairytale Complex - [Sans x Reader]
    58.1K 3.1K 57

    [Frisk's Parent Reader | Slow Burn] The dichotomy between black and white is your constant when it's time for you to meet the whole new civilization Frisk brought along with them to the Surface. As a parent, it's not easy to trust others when they've hurt your child. So when that new civilization decides they owe Fri...

  • GravityTale
    12.5K 737 5

    Last summer, Mabel and Dipper Pines vanquished the demon known as Bill Cipher. This summer, they're looking forward to a vacation in their favorite place on earth: Gravity Falls. Meanwhile, Sans is relatively happy. This is the first timeline in which the kid has gone completely pacifist, not gained even one EXP. Of...

  • Not a Hero, Not a Villain (Undertale x My Hero Academia)
    15.3K 946 14

    After a genocide run, when Frisk decided to destroy the world, Sans' soul didn't make it back. It ended up inside the body of a woman, who'd quirk was to destroy her soul and place another into her body. Now, in the body of a woman, with no money, no friends, and nothing but his natural skeleton powers. Until someone...

    Completed   Mature
  • (Sans x Reader) When Two Souls Meet
    947K 27.2K 28

    Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that...

    Completed  
  • My Greatest Experiment (Skelebros' Origin Story)
    34.4K 1.8K 29

    After much research and theorizing, I've decided that I'm going to attempt it. It's risky, but I'm so desperate at this point that I'm willing to put my own well being on the line. If I survive, this may just turn out to be very... interesting. This is my thoughts on the origins of Sans and Papyrus, as well as their...

    Completed  
  • UnderCorrupt
    86.9K 7.3K 54

    I have an Idea for an Undertale AU. And apparently, it's a good idea? So here, have a book. --- Long ago, two races ruled the earth. But when a plague of corruption swept through one species, causing a half of their population to attack the humans, the humans thought it safer to banish all the monsters underground. No...

    Completed  
  • Sans' House Guests (CreepyPasta x Undertale)
    172K 6.8K 27

    The surface was not what Sans thought it would be. Lack of communication skills, communication in general, and social interaction had driven him into a depressed and anxious state of loneliness so deep that it'd take a gang of serial killers to help drag him out and fix his problems. Literally, it took a gang of murde...

    Completed   Mature
  • Shadows Of Remorse (CreepyPasta x Undertale)
    161K 8.4K 63

    (This is the sequel to Sans' House Guests, you should go read that before you read this because you will be confused on what the heck is happening! Read the first story here: https://www.wattpad.com/story/192345936-sans%27-house-guests-creepypasta-x-undertale ) After the events over the months, Sans had finally called...

    Completed   Mature
  • Soul of Fire (CreepyPasta x UnderTale)
    87.3K 6.2K 75

    ( This is the third book to Sans' House Guests, you should go read that and Shadows of Remorse before you read this because you will be confused on what the heck is happening! This is an original crossover story between Undertale and CreepyPasta where Sans is the main character and makes some CreepyPasta friends! I ow...

    Completed   Mature
  • A Woman's Vision (Female Sans Story)
    30.4K 1.8K 44

    Everyone knows the story. Asriel died upon the golden flowers long before Alphys took one for her experiments, and revived him in the form of Flowey due to the determination. This happened again with the monsters falling down, showing a pattern of the true strength of determination. Determination is the key for keepin...

    Completed   Mature
  • Sapphire Judge (Undertale x BNHA Crossover)
    277K 9.6K 44

    Sans world gets reset and he finds himself transformed into a human girl in a world of heroes and crime. She, however, is all alone, her friends and brother all lost to the past, lost to the last world that she now only has in memory. With this new life, she vows to learn to become a hero, so she can save those who ca...

    Completed  
  • Branches On A Tree
    17.4K 662 17

    The barrier is finally broken, and at last all of monsterkind are free to walk on the surface. Again. Sans the Skeleton is skeptical. Why bother getting excited for something that's just going to reset? This is not the first time the barrier is broken, and probably not the last. He feels the need to take a break for e...

  • Save Point (Sans x Reader)
    115K 6.1K 124

    (Sans × Gender-Neutral! Parent! Reader || Slow Burn) Moving from a backwater town to a city bustling with human and monsterfolk alike, some things begin to change both for the better and the worse. What was left behind comes back to bite at you in the most unexpected times, current progress being put in danger as a re...

    Completed