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  • Photograph Echofell Sans X Reader
    75.6K 2.9K 20

    What's going on? Why is this happening to me! You were an experiment and he was a failed one what will happen when you two meet in a dystopian world?

    Completed   Mature
  • Horror Sans X Reader
    140K 2.5K 27

    You know what it is about except I'm gonna add that you were abused by your family. And there might be some things that get really close to Lemons.... or are Lemons.... that's kinda up to you personally if it's a lemon or not...just to let you know! You have been warned.

  • The Perfect Time ((Gaster!Sans X Abused!Reader))
    33.5K 878 16

    5 years. 5 years it's been. 5 years since Frisk freed the monsters. 5 years since your mom left you. 5 years you've put up with your father. 5 years of suffering and anguish 5 years of torture and abuse, mentally and physically. But that was gonna be stopped. ~~~~~~~~~~~~~ Meet (Y/N), a abused runaway with an attitud...

  • Captured (Underfresh!Sans x Reader) //DISCONTINUED//
    121K 5.6K 32

    You never knew how it felt like to be caged like an animal. But after meeting Fresh, the love you two have for each other slowly burns away. The chemistry, the passion, the honesty. Instead of fixing the mess he made, he decides that you aren't needed anymore. Of course, it wasn't his decision. It was the voice in h...

    Mature
  • Human Again ~ Undertale ~ SansxReader {COMPLETED}
    43.9K 1.5K 26

    {THERE IS LEMON BUT READING IT IS OPTIONAL AND WONT AFFECT THE STORY} You've aspired to be a Monster specialist ever since the monsters had left the Underground. You leave on your first expedition to find as much information on each Monster as you could but then you're sidetracked when you wander into a cave, where th...

    Completed   Mature
  • To the highest bidder
    99K 3.7K 33

    Casinotale Sans x Reader The year 201X, You weren't much of a social girl and you knew that. But your friends you did have however wanted to change that...So they brought you to Undertale casino and resort, a booming place after the Monsters were released from the Mt.Ebott. But what happens when things go south? Why...

    Completed   Mature
  • At the Surface (Sans X Reader)
    497K 20.2K 62

    The monsters have finally made it to the surface and have been legalized to roam the surface as they please. The first couple of months have been spent as a paradise where humans and monsters have lived in peace and happiness. But as we all know, humans tend to be afraid of what they don't understand and the appearanc...

    Completed  
  • Hurts Like Hell (G!SansxReader)
    190K 7K 40

    This is a Slowburn so hate me all you want, I dont care. If you dont like it then dont read it. Basics: y/n-your name l/n-last name e/c-eye color f/c-favorite color h/c-hair color s/c-skin color Setting: Monsters were released from the underground and onto the surface. The Humans were use to living with them but not u...

    Mature
  • UnderFell Sans X Reader
    242K 5.1K 34

    Well yea this is an shipping and yes alot of Lemon cause well Underfell Sans is rough ehehe i know in werid well my first time doing this so if i do make a mistake well comment and help me make it better This can be for guys and Girls i really dont care i know you all think it wrong but meh really dont care if you tal...

    Completed   Mature
  • Protection from the 90's (Fresh Sans x Reader)
    49.7K 1.1K 17

    Fresh becomes in love with a human and very protective

  • Two Hot Skeletons - which to Choose?《 Gaster!Sans X Reader X UnderFell!Sans 》
    18.1K 688 8

    [Y/N] [L/N] is just a normal person, but that's when she has call from a very, very important person in her life, and who knew a simple call could forever change her life? Cover made by: BRAINLESSBEING

  • For Your Sake (Gaster!Sans X Reader)
    60.2K 3K 20

    THIS IS A SEQUEL BOOK!!! IF YOU HAVE NOT READ THE FIRST BOOK YET THEN GO FIND IT ON MY PROFILE!!! Anyway, now for the summary: After death, you hadn't expected much to happen. You fell immediately into a place like the void. You just wanted to reconcile for what you'd caused, but your heart had a wish of its own. You...

    Completed  
  • Darn Hot Skele-Guy... [[:]] Gaster!Sans X Reader [[:]] [D I S C O N T I N U E]
    44K 1.4K 25

    I.. I don't know why I'm writing this..

    Completed   Mature
  • Bone-ly Ness Is Overrated (Sans X Reader)
    91.3K 2.9K 18

    The monsters have been liberated from the Underground by Frisk. You didn't mind the monsters, they were nice. You befriended Frisk, Toriel, Nabstablook, Sans, Papyrus, Undyne, Alphys, Mettaton and Asgor once they the monsters had settled in. The monsters attended human history classes and the humans attended monster...

    Completed  
  • G!Sans x Reader
    36.2K 1.4K 20

    You sigh shakily, your fingertips lightly pressing on the door handle. You were just about to walk into your house, to them. Your parents were extremely abusive, you could never understand why. But from the earliest memories you had, they were always excessively violent. You were afraid because you had come home late...

  • (Sans x Reader) When Two Souls Meet
    914K 26.5K 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  
  • Snowglobes ∆Gaster!Sans x Reader∆
    70.4K 2.9K 62

    Highest Rank: #290 in Fanfiction ××× "Its a mad, mad, world out there, girlie. And your kind just makes it madder." Everyone has a lock. Some people are lucky enough to find someone who holds the key. Opal's lock has been rusted and unused for years. But when a bipolar skeleton wipes away the dust and doesn't mind...

  • Without You. [[:]] Gaster!Sans X Reader [[:]] (#Wattys2016)
    37.1K 1.6K 35

    Hello. I'm [Y/N] [L/N]. I grew up with my father. My mother has died when I was about 5. My father always blamed me for her death. And in each second, I'm starting to blame myself, too. My mother died in a car accident. She was just driving me to a my favorite restaurant; [F/R]. It was dark, and my mother couldn't see...

    Mature
  • The Kidnap: Psychotic!Sans x Detective!Reader
    32.1K 1.1K 24

    This is a sequel. If you haven't read the first book, you're gonna have a bad time (or be confused, whichever)

    Completed   Mature
  • "You Can't Escape Now , Doll" (Gaster!Sans X Reader-chan)
    80.9K 1.8K 20

    Your a 18 year old girl named (Y/N), you've been living in the underground for 1 week and you've been staying with Tories. You had run away from a family who never really loved you except your brother. So you tried to do what most people would have done and tried to commit suicide. That plan had failed and that's when...

  • Most beautiful Girl in the World Sans X Reader
    422K 12.5K 17

    Everyone is finally above ground, Sans is on his own journey into the world and He suddenly meets the girl of his dreams. Will his love be accepted? or will humans and monsters never be able to be together

    Completed  
  • Gold's Eye GasterSans X Reader
    429K 13.8K 25

    You've heard the stories, of the mysteries of a man who guides lost ladies home by night legend says his voice is like a demon of hell and anyone who's ever approached him has died. One night you get lost and you uncover his real story

    Completed  
  • Let Me Run
    702K 29K 67

    It's been two years since the barrier was shattered... All was well until humanity's opinion and voices ruined it all. The war had begun. --------------- Although one girl had always seen the world as a sickening place... A majority of humanity was indeed contaminated, but she was one of the individuals who deserved t...

  • Do you Trust me? (Underfell sans x Reader story)
    37.5K 900 19

    Making friends with others may sound easy as you think! But the thing that starts betrayal is breaking their trust Hah! Got your interest? It better! Feelings are coming up your way....

  • Rescue (UnderFell!Sans X Reader Fanfiction)
    75.9K 3.2K 32

    It was supposed to be a search and rescue with your two closest friends. With your 'brother' Frisk missing now two days and that foster home giving less than a damn, it was up to you and your best friends to follow his one clue. But what happens when one little clue leads to a situation larger than life? Will you surv...

  • ~Why do you care~ [Underfell Sans X Reader] [•COMPLETED•]
    235K 6.5K 51

    Warning: possible swearing, inappropriate humour, perhaps lemons? Idk. Just stop being a goody two shoes and enjoy the book, kid

    Completed   Mature
  • TRAPPED - Gaster!Sans x Reader
    18.1K 651 30

    (Cover Art is not mine.) You don't remember who you are, or who you used to be. You've woken up in an abandoned costume shop with amnesia, after the second human and monster war. The monsters were victorious this time, and practically all that's left of humanity is trapped in the Underground. You find a journal explai...

  • I'm Sans, but it's Hell to You (UNDERTALE Sans X Reader)
    11.1K 339 19

    The kids would always pick on young (Y/N), so she decides to scare them. There's a legend that when you climb to the top of Mount Ebbot, you never return. The characters of UNDERTALE belong to their owner and you belong to yourself, thank you, enjoy!

  • Trust {Sans x Reader}
    178K 5.2K 19

    You woke up and tried to gaze around the darkened room, your vision was blurry. It was just a bad dream, you thought. Your eyes adjusted and you realized it was far from it... {Completed} Thanks so much for 300+ votes & 10k+ reads, holy heck.

    Completed  
  • A Little Bonely (Sans X Reader)
    340K 8.5K 51

    Monsters always fasinated you. Ever since Frisk broke the barrier and freed the monsters, humanity didnt take it too well but they are slowly getting used to it. Slowly. Very...slowly. (btw Chara is depicted as a female in this story, and so is frisk. Dun be triggy) HEY ALL! This is my first fanfiction EVER! so dont j...