Select All
  • be my girl (gaster sans x reader) EDITING
    99K 2.5K 27

    You are a 16 year old girl with a magic glowing eye living in the ruins with toriel and frisk you're younger sister. you have never been let out of the ruins not until one day toriel sends you to meet 2 skeletons. will you fall in love with sans or will you're love crumble? undertale belongs to Toby Fox

    Completed  
  • This Damn War (Part 2 of The Only One A Gaster!Sans FanFiction)(discontinued)
    34 2 4

    It's been a year since anybody's seen Gaster!Sans and Aqua. The war is still going strong, but it sure did help. And with the help of new friends and old enemies, the Resistance still has a fighting chance for victory, but with the loss of their greatest leader, who will take charge and who will fall from power? Hello...

  • The Only One (Gaster!Sans Fanfiction) (Completed)
    4.6K 247 37

    Aqua has a terrible life. She's seen it all, divorce, death, abandonment and everything she ever had has been taken from her at one time. But when someone comes into her life and she finally escapes, will it be for good? Or will the be like all the rest? And without him, will she ever be set free? Cover edit done by m...

    Completed  
  • TRAPPED - Gaster!Sans x Reader
    18.2K 655 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...

  • Crossfire -Gaster!Sans x Reader
    92.4K 3K 42

    What would you do if you lost your family and had to be alone? A girl named Y/N, has lost her family from the war. She hates monsters to this very day. But what if she finds a monster that changed her life forever? Would she befriend the monsters or make more of an enemy out of them all? ____________________________ I...

  • Demons(AU Sanses X Reader) Updated 2021
    40.3K 767 16

    This story has been stuck in my mind for a while now so this happened. The AUs are: Undertale(original) Fell!Sans Ink!Sans (My au) Traveller!Sans Error!Sans Swap!Sans (Other AUs) So hope you enjoy the story.

  • Sans Xa Mermaid Reader
    2.2K 34 4

    I dont even know

    Mature
  • Sans X Werewolf Reader!
    82.9K 2.3K 13

    "When you transform imagine a big ass wolf! Like Jacob from twiligh Okay?:) Just giving you a visual

  • 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...

  • Stay
    935 77 10

    "You are far greater than you think. Please stay just a little longer. Because you live everyday. You only die once." the tall skeleton held out his hand and you looked at it. Should you even try? Warning! This is very depressing and may trigger certain people. This also doesn't have an update schedule at the moment...

    Mature
  • Eyes of Stone (Gaster!Sans x Reader)
    59.8K 3.2K 52

    His eyes were like stone, cold and dead against the blank snow. Hers were like melting frost, swimming in glacial lakes like an undisturbed winter. It was journey of finding and losing her, an adventure of losing and regaining him. A trial to see if their love was truly set in stone. (SEQUEL TO 'EYES OF FIRE') (FANFIC...

    Completed  
  • Broken [gaster sans x reader]
    474 11 2

    you wake up in darkness. You feel around to see if you could feel a light a doornob or something. You felt around till you felt......A body.

  • Gaster sans x reader
    893 18 3

    I love g sans and I would thought this would be a better story than my other one i don't know if you will like it I just really hope you do

  • Mafiatale sans x reader {Safe with me}
    221 1 2

    Your only 16 years old when you get in a group of monsters, You kinda bit of Shy, Loner, and silent. I had a help with @DusttaleYuri423 she makes stories too like jock pj x reader and some other stuff. hope you like her and my story

  • Sharpshooter ' Mafiatale Sans x Reader '
    19.5K 712 27

    You were left to survive on your own when you were Ten. Now, your Eighteen and the monster were let free. You were known as, "The Flame," Why were you called that? To find out, read this story. NOTE: Ander, Christian and Georgie are based off real people. Please understand they aren't exactly the same as they are in t...

    Completed   Mature
  • |Mafia!tale sans x reader| = /I'd steal you any day!\
    87.5K 1.8K 17

    You opened your eyes and you felt...packed...squeezed sorta you heard people talking to each other "We got the kid that's all there is to it Paps!" A more Anxious voice said "yes but we never kidnapped a child!" The first voice argued "she's not even a kid! she's maybe...twelve?" There's lemon part because someone wan...

    Completed  
  • An Assassin of the Night Mafiatale Sans x reader
    3.4K 65 10

    You're not a normal rich girl with a Butler and your own mansion, you have a secret life but only at night your a special kid, your an Assassin with employers your known so well, they even let into big casino. Until one day your found out by your parents. Later on you fell in love with a certain skeleton ((Edited!!))

    Mature
  • Angel (Mafiatale Sans x Reader)
    164K 5.1K 17

    (Y/N) is a local jazz singer at Later's Nightclub. While singing she meets some monsters, and it all turns crazy.

  • A Monster's Love (Mafiatale Sans X Reader)
    6.2K 239 21

    Sequel to: A Monsters Hope

    Completed   Mature
  • Why The Hell Do You Care? (MafiaTale Sans X Reader)
    1.8K 34 6

    NONE OF THE ARTWORK IS MINE~~~~~~~~~~~~~~~EXCEPT WHEN I SAY IT IS I'm wayyyy too lazy to describe the story.It's basically what the title says.

  • Mad Hatter Mafia Sans X Sane Reader
    990 17 3

    The monsters have been finally released from the underground and now live on the surface. But most of them don't like humans still even though some still think they can be good. Because of this, most of them have joined and created mafias just to terrorize humans around the globe for fun. They accept humans, but only...

    Mature
  • Chesstale Sans x Female Reader
    11.7K 338 12

    You have already been through a pacifist run for normal Undertale after curiosity about Mtt Ebott, but something doesn't feel right and when you get to the surface everything goes wrong so you do the only thing you can think of and have Frisk reset. You end up at the beginning of the game only to realize Frisk isn't t...

  • 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...

  • stuck between (Reaper!Sans X reader X aftertale!Sans)
    17.7K 354 14

    Y/N has somehow cheated death more times then she could count, she isn't like chara nor frisk so what kind of power does her soul hold? And will she survive much longer... after all a humans body can take so much before they fall apart... But on a sunning day she falls into a hole that will change her life.... Disclai...

    Completed   Mature
  • A Reason To Breathe
    14.7K 528 27

    Frisk freed all monsters and everyone is happy, except one monster. Finally Geno can rest at peace, but a certain human has caught his eye and gave him a new reason to keep on living.

    Completed  
  • Error 578 (Error!Sans x Reader)
    120K 3.6K 40

    account inactive. you can find me on @Mini_Crushies

  • Love is Torture - Underfell!Sans x Reader
    1.2K 50 2

    account inactive. you can find me on @Mini_Crushies

  • Radical Obsessions (Fresh!Sans x Reader)
    175K 5K 14

    account inactive. you can find me on @Mini_Crushies

    Completed