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  • Eyes of Fire (Gaster!Sans x Reader)
    270K 11K 63

    (FAN FICTION BASED OFF OF VIDEO GAME 'UNDERTALE') His eyes were like fire. Amber. Dangerous. But they intrigued me. The flames of his soul danced and encased my heart. It was needless to say that I didn't mind. (COMPLETED)

    Completed  
  • Blown Through The Rift (Gaster!Sans X Reader)
    245K 9.5K 35

    You were working with Alphys in the lab in Undertale when chaos strikes! In a freak accident, concentrated determination is mixed with an unnamed concoction and blow you through a dimensional rift. When you reawake, you find yourself in what seems to be the beginning of Undertale once again. Upset but not overly surpr...

    Completed  
  • So This Is Determination {Frisk x Sans}
    83.3K 1.9K 27

    Sans. A monster with a skele-ton of puns up his sleeve. Frisk. A human girl who fell down into the ruins. Toriel. A mother figure for Frisk. Papyrus. Sans's younger brother who loves spaghetti. This. A story about them, and more.

    Completed  
  • UnderSwap Sans X reader
    70.6K 1.7K 36

    Why, Hello Human! This book used to be..not as great as it is now! It's been a while and I have finally finished my puzzles. There's no way you can get through them now! Mweheheh! Author: Heheh-Hey, Guys! This book was awful back then. Just forget about those awful chapters in the beginning. The chapters now have imp...

  • Underswap Sans x Sad! Reader
    15.3K 415 8

    Here's some more Blueberry love for the fans out there!

  • No One can have you but ME (Yandere Underswap!sans x reader)
    68K 1K 14

    Not every one is what they seem. to learn this after falling into mount ebot and meeting papyrus and his brother, sans. or as you call him blueberry. you become friends with blueberry and hang with him often. but little did you know that blueberry wanted more then your friend ship...

  • Undertale lemons
    258K 1.4K 8

    Any type of lemon from Undertale all the way to error!tale (can't believe that I am about to do this)

    Completed  
  • Darn Hot Skele-Guy... [[:]] Gaster!Sans X Reader [[:]] [D I S C O N T I N U E]
    44.1K 1.4K 25

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

    Completed   Mature
  • After Dark An Gaster Sans X Reader
    14.2K 402 4

    This is from the readers point of view. You don't know where you came from. You don't know where you've been. You don't even recognise yourself. You're lying in the street whilst it's pouring it down. Your hurt and alone. Your clothes are in even worse condition than you are. You feel that your going to die there. Unt...

  • Dear Demon(Gaster!SansXReader)
    15.9K 521 22

    You woke up, it was monday. You were going to your wardrobe to change your clothes... But there was no wardrobe. You was in a decaying dirty couch, in the middle of nowhere. You forgot that your house was burned to the ground by some human-hating monsters, while your family and friends were there. And you watched them...

    Mature
  • G!Sans X reader
    93.4K 2.4K 20

    Now, you're about to read a story where YOU are the main character, if you're a fan of echotale and G!sans then this is the right story :3 Its my first story so please do not expect the best, but ill try :) Otherwise i'll be posting stories with other characters when this is done, hope you'll enjoy! :') Love ya!

  • The Skelly Badboy(Gaster!SansxReader)
    34.2K 1.2K 17

    Yeah my account was delrted so today I shall start making a story about Gaster sans and the reader..might lead to smut so be warned

    Completed   Mature
  • Lost Without You (Gaster!Sans X Reader)
    76.6K 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...

  • My bodyguards (ReaderXSons of sanses)
    67.6K 2.5K 27

    A story where you are roomies with the Au sons of sans. I dont really like introducing them again and again.Kinda like your harem..so uh good luck..lets see who you'd pick. *wink*

    Completed  
  • A Day with Sans (Sans x Reader)
    1K 25 11

    My first actual chapter book on Wattpad! I used to write things like this all the time when I was little, plus I'm joining a creative writing club at school so I think this will be good for it

  • Undertail Smut [DISCONTINUED]
    22.7K 243 9

    This is my first book, hope you enjoy :)

    Mature
  • Undertale Smut
    177K 1.2K 20

    End my suffering Stay away if you can't handle the smexy times

    Completed   Mature
  • Solid Yellow Tear (Gaster!Sans x Caring Fem!Reader)
    56.1K 2.3K 28

    A young girl would walked through the woods hiding from any human that would capture those. Until she heard a faint cry of the young girl who saved them from the under ground only then that would change her life, she hated seeing monster in pain, hurt, and tortured just because they weren't human.This young girl, woul...

    Completed   Mature
  • 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

  • Snowglobes ∆Gaster!Sans x Reader∆
    70.5K 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...

  • I'm not alone... (Underfell Sans X Reader)
    21.3K 540 6

    You fall down into the Underground, thinking your life was helpless. Now....you realize your life is helpless without him....

  • Not too bonely anymore.... (Gaster! Sans X Reader)
    1.3K 58 3

    You run away from your abusive alcoholic mother to find a safer home. Taking a rest in an Alleyway, someone finds you, and tries a humongous amount of times to flirt successfully with you. You try running away, only to be thrown over their shoulder and taken somewhere new.

  • [[DISCONTINUED]] There's Never Enough Of You 《Gaster!Sans X Reader X Grillby》
    46.1K 1.9K 16

    NOTE: THIS STORY IS DISCONTINUED [Drawing on Cover by: SmokyJack on Deviant Art.] You clumsily bumped into someone on your way home from work, apologising as their papers from their arms and scatter along the ground. Feeling horrible, you kneeled down to pick their belongings up for them. As you handed the pages back...

  • To Love A Demon (Gaster!Sans X Reader)
    106K 3.9K 30

    *Do you fear me? "N-No" *Are you sure? "Yes." *You will learn to fear me Heh. Well here we are! I hope you enjoy this sin. I'm going to take my time and let you learn to love the characters slowly. So if you're the ones who like lemon in the first chapter, this is not for you. *Don't worry sweetheart. It will be worth...

    Mature
  • Just Like Before (A Gaster!Sans x Reader)
    51.1K 1.5K 29

    ♦Highest Rank :#714 In Fanfiction! ♦ Y/N fell down the Hole of Mt.Ebott when she was 8 years old. She lived happily with Toriel and with Other Monsters. She has a best friend named Gaster!Sans.She calls him 'Gas' for short. They always play at the Castle where Y/N's home is. Y/N broke the barrier before she and gas be...

  • Hidden Inside (Gaster!Sans X Reader)
    85.9K 3.4K 31

    After the monsters are set free, they aren't too keen on befriending humanity. They won't show themselves yet. They will get revenge on the war the humans had waged years ago. Now they attack in secret, getting patrols and assassins prepared at nightfall. One of the pairs of assassins is Gaster!Sans and his brother. W...

  • The Perfect Time ((Gaster!Sans X Abused!Reader))
    33.6K 879 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...

  • Eleutheromania | Gaster!Sans (UNDER HUGE CONSTRUCTION)
    11K 433 11

    obsession for freedom.

    Mature
  • All's Fair In Love And War Gaster!Sans X Reader
    22K 1.1K 8

    War amongst the humans and monsters has really messed things up for you. That is, until you meet a sexy skeleton. ((Note: this is a slow burn. You actually have the chance to fall in love instead of usual fanfic logic. Also reader is gender neutral))

    Mature
  • The Everything Book.
    6.9K 61 29

    One word: Sin.

    Mature