Select All
  • Chaotic Corruption ( a bittybones x Ultima!reader )
    21K 458 6

    Y/N is an Ultima but she is also a soul mix. A soul mix is when two soul types combine and become one being. She is a mix of CHAOS and CORRUPTION. The strongest soul types other than Determination and Fear. Y/N was used as a weapon in a war. The Children's war to be exact. She has become emotionally drained since then...

  • The white soul (Geno sans x reader)
    620 17 4

    (Y/n) has fallen in the underground with her friend, no memory, and a voice in her head with the name Geno. A human with the color of a monster soul is strange, but is it as strange that the voice in her head as some of her soul?

  • Fallen Angel (Gaster x reader) OLD
    148K 6K 49

    OLD AND BADLY WRITTEN THE REWRITE IS POSTED ALREADY DISCLAIMER: The god figure created in this fanfic is purely fictional. He is purposefully made to be prideful and cruel and is not supposed to represent any god. I am religious myself and I did not intend to attack anyones believes with this book. An angel. Sign of...

    Completed  
  • Flowerfell Sans x Abused! Neko! Reader
    67.6K 1.4K 34

    I made this book for @KawiiPotao6678 they have never read a flowerfell x reader so I made this book for them. But all you other people can enjoy as well. Sorry if some of the information on here is wrong I am not very familiar with the Flowerfell AU. I will look up what I can and learn more about it while making it. I...

    Completed  
  • Monster cops (re-written)
    15.3K 1.1K 48

    Now on the surface, Grillby re opened his bar. New and old faces poured in each day. One recognizable face was the pun loving skeleton Sans. After meeting a strange woman, they are given job offers that they simply cannot refuse. Literally. I absolutely hated my original story, so I re-wrote it here. The story line an...

    Mature
  • 'Tough Love' Mafiatale!sans x Reader
    2.2K 61 10

    ⚠️WARNING⚠️ profanity will be spilled YOU HAVE BEEN WARNED

  • Romeo and Roulette (Mafiatale Sans x Reader)
    68.8K 2.5K 37

    There are certain street rules branded on the hearts of the people of Chicago. Certain rules like always watch your back. The city is thriving with mafias, all of which have a rivalry against each other. Each Mafia has there own contracts and if someone steals it they're dead meat. But what happens when the mafias ha...

  • Angelic Songbird (Mafia!Sans x Singer!Reader)
    13.8K 428 12

    You always enjoyed watching your big sister perform since a young age. As you both got older, something in her was starting to change. She was more sharp tongued, cruel even when she spoke to you. One day she even got a gig to sing with a small group at the local popular bar Grillby's. Long story short she walks out...

  • Hurting Heart (Dancetale!Sans x Paralyzed!Reader)
    100K 5.6K 18

    Ever since you were little, you dreamed of being on stage and dancing to your hearts content. You were determined to get where you wanted. All spot lights on you, people cheering and clapping as your feet swept across the stage. You were so close. 1 day away and you would have all of your dreams come true. Then every...

  • The War Amongst Us (W.D. Gaster X Reader)
    64.6K 3K 24

    (Y\N) is a young female spy and soldier fighting in the War of Humans and Monsters. She is fighting on the humans' side of the war until a turn of events when she becomes apprehended by the enemy. What will happen when a young monster scientist tries to change her views? Thanks to Itachei on Deviantart for letting me...

  • .. The new au .. Sans AU x female AU reader
    141K 3K 31

    Ink has made a new au... Being tale where every one of the aus for a character is in one, for you though. You're sans, but What happens when ink finally lets you meet the other true sans aus which you where made from? And what new power do you have, that the other sans don't, and how will it affect you? Read to fi...

  • Death's Flower(Reaper Sans×Flower)
    4.7K 156 44

    You're a hybrid. So is your mother. You're a 22 year old woman, daughter of a very dangerous man. Your father is a reaper, named Black Night. He is known almost everywhere for his job. Because of this, he had forbidden you from socializing until, one day, he decided to send you off to Mt. Ebott University. The place w...

  • Sans x reader (together)
    237K 6.3K 20

    Hiya! This is going to be my first fan fiction. I have recently been obsessing over undertale, and sans is my favorite character. I have already read a lot of sans x reader and decided that's what I wanted to write. I don't know how long this story is gonna be or how often ill update, but ill see how it goes and if yo...

    Completed  
  • Grillby x Reader: Burn the Witch
    9K 493 5

    Decades after the monsters were imprisoned underground, the humans have found a new prey to hunt. Despite hiding from the humans for centuries, witch trials swept through the world killing almost all surviving mages. Almost all. The reader is one of the few mages still alive through the horror of the witch trials. Fle...

  • Grillby x Reader: War Zone
    81.8K 3.3K 11

    The reader is a wizard, beings with the shape of humans but the magic of monsters. Wizards were forced into the war between humans and monsters by the humans. There, she meets the monster general, Grillby. Cover photo belongs to: http://ask-grillby.tumblr.com

    Completed  
  • When Two Fates Intertwine (Sans x Reader)
    90.4K 2.5K 12

    [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
  • (Sans x Reader) When Two Souls Meet
    941K 27.1K 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  
  • Bone of Contention (Underswap Papyrus X Reader)
    370K 14.6K 62

    Humanity is divided over one thing---the Monsters' reappearance. Some believe that they should stay aboveground, and others think that they should be sent back to where they came from. Then, there are those like you who don't quite know what to think yet. What will happen once you become acquainted with two skeleton b...

  • I Don't Dance, I Perform ~DanceTale!Sans x Reader
    77.5K 3.6K 18

    In this world, you dance for your life. But in your world, dancing is just a part of your act. When helping Frisk with their stamina by dancing up Mt. Ebott, you find yourself in a rather monstrous situation. Lace up your dancing shoes, it's about to get funky in here.

  • The Bounce Of The Ball Followed By The Steps To The Beat-Dancetale!Sans x Reader
    115K 5.1K 31

    You're an athlete, simple as that. You've thought about dancing, but you figured it was never your strong suit. One day, your friends drag you to their dance practice and you are introduced to their friends. In the group of new-monster-friends, one of them catches your eye. Suddenly, dancing doesn't seem like a bad i...

    Completed  
  • Mafiatale - What's Important [Frans] [Book 2]
    32.1K 1.6K 73

    People always said that being a parent was difficult, especially in the world that Sans and Frisk lived in. But somehow, together, they were managing to get through it the best that they could. Now, the two of them are a couple of years older. As a 26 year old, Frisk still tries her best to juggle parenthood, being a...

  • Soul: The Return An Undertale Fan Fiction
    8.7K 340 7

    Book 2 of my Soul series! Check out Soul before you continue please!! Also sorry about the cover. I tried to make it fit but it just wont. If you wanna see it just go to my DA page, the link should be on my profile.

    Completed  
  • Prisoner of War (W.D. Gaster X Reader)
    46.5K 1.7K 14

    You are one of the few humans with magic during a war between you and the monsters. (Pre Undertale) Instead of killed you wind up captured by the monsters where you meet a scientist and doctor W.D. Gaster. Cover... I drew it myself this time

  • Hard Luck (G!sans x Frisk)
    38.1K 1.3K 31

    {WARNING: THIS IS CRINGE I MADE ALMOST TWO YEARS AGO} Frisk is 20 years old a living on the surface. After she was attacked by a human she ended up killing them. She was put in to prison and had to serve her sentence. She meets an old friend who changed alot. Frisk nor G don't realize that they know each other. They e...

  • Hold Still GXReader
    63.3K 2.7K 26

    (Y/n) has had a rough life, how could it get any worse? Let's let G answer that. ~~ This is a Complete Rewrite of Hold Still! I don't own any of the pictures or Songs.

    Completed  
  • Silence Is Bittersweet (DanceTale Sans X Reader)
    32.5K 1.6K 39

    (This is an Undertale Fanfiction and is made from an AU, or Alternate Universe, called DanceTale) A happy turn of events leads you to your Aunt's house. Working at her cafe, you make friends in this new town. You have a new name, and a new family, leaving your troubling past behind. Then one small child turns your wor...

  • - My Angel from the Sky - Gaster x Reader
    88.8K 3.1K 30

    Suddenly you find yourself in the Underground, with no memories and an unknown and painful past. Your first encounter is Flowey and he tells you how weird and different your soul is. What does it mean ? What happened to you ? A fated meeting awaits you. The beginning of everything. THE UNDERTALE P.S (GasterxReader) Th...

  • Lost Without You (Gaster!Sans X Reader)
    76.5K 3.5K 18

    This story will contains things such as ABUSE, CAPTIVATION, VIOLENCE, ect. This is the only warning I will give, so if it's not your cup of tea- sorry about that! . . . Death. War. Violence. A world torn apart by two separate races. In a place like that, can peace even exist? Will you fight for your freedom as a human...