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  • LOVE Madness (DT!Sans x Reader)
    48.9K 1.6K 13

    Deep underground, a child is on their way to a genocide route. Sans comes to a conclusion where he needs more LOVE in order to defeat Chara. He becomes corrupted and slaughters every monster in the Underground. How will you save him now? (This art belongs to it's rightful owner)

    Completed   Mature
  • 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  
  • Manipulation [EchoFell Sans X Reader]
    18.9K 504 6

    It has been a year since the monsters were freed. You had literally been through hell and back with them; changing every single one of their personalities around as much as possible. Being EchoFell, the only one who was actually nice to you in the beginning was the timid plant. After a while, things were really lookin...

  • Alone (A Gaster!Sans X Reader)
    44.1K 1.4K 20

    A war has been going on for a few years now. My parents are gone. And I'm now alone, left to survive for as long as I can. I didn't believe in love anymore, in fact, I didn't believe in much of anything or anyone. But then he finds me. Should I trust him? Should I let him see my emotions? Undertale by Toby Fox Gaster...

    Completed  
  • Double The Trouble (Echofell Sans vs G. Sans x Introverted,Shy Winged Reader)
    3.4K 74 8

    [Y/n] [L/n]... "H-help m-me..." [Y/n] [L/n]..... "I-I can't s-see..." [Y/n][L/n]........ "HELP ME!" (EchoFell may be a Yandere??"

  • What Lies Inside (Gaster!Sans x Reader )
    98.3K 3.9K 46

    "You know sweetheart, lying doesn't get you anywhere with me." He said lighting a cigarette and placing it in between his teeth. Vanilla, leather, and smoke is quite the intoxicating smell. "I'm not lying, also who gives you the right to judge if I'm lying or not?" Something flickers inside me, a warm burning feeling...

    Completed   Mature
  • Blown Through The Rift (Gaster!Sans X Reader)
    244K 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  
  • 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...

  • 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...

  • Pure Soul (Gaster!Sans x Reader)
    71K 2.4K 24

    You have a small secret that no one knows about. You are the only pure soul human that anyone has ever met. You keep the soul a secret from everyone. That is, until a certain skeleton decides to come... ... And one thing is for certain... He wants your soul. But he also wants you.

  • Anything for you
    50.9K 2.1K 40

    "It couldve been worse." He says as he sits down exhausted "How.." i sob. "We couldve gone against your word and just killed them." He replies earning a glare from me. "Thanks that makes me feel loads better." I say sarcastically. "But we didnt, cuz we all love ya too much."

    Completed   Mature
  • GasterSans! X Reader Chan
    33.3K 1.1K 21

    You're having flashbacks about the past and the life you had with real life monsters. You're feelings to one particular monster takes you to your limits, and you discover something extraordinary yet life changing. (sorry this sounds way better after one of my follows said it's really confusing so I'm sorry if it was)...

  • Hurts Like Hell (G!SansxReader)
    191K 7.1K 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
  • 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...

  • My world in just one skeleton (Gaster!sans x reader)(DISCONTINUED)
    1.2K 149 25

    You were happy,you had an amazing family,amazing life....... until the Monster and human war started then everything fell apart. WARNING:Just slight or maybe a lot of cursing(HUEHUEHUE)(Also the plot line was referenced a lot..pls don't kill meh I didn't copy the chaps I wrote mah own and I will change it abit at the...

    Mature
  • Somethings Not Right// EchoFell!G x reader
    7.2K 254 16

    A mysterious virus that spreads across the nation as fast as lightening. No way to cure it and no way to survive from it. But could there be a way to somehow be immune to it? Could their really be a cure if someone could possibly could be carrying it within their body? It's only a matter of time before everyone is ap...

    Mature
  • Sweatheart, I'm a Mobster. {Mafia!Gaster!Sans x Reader} ||SLOW UPDATES||
    16.2K 659 5

    -------------------------- The 3-year-old frisk cried, as you held them close, rubbing their back. "Kitten, who's this?" The skeleton asked. I growled. "Kitten? That's my sibling, Frisk!" ------------------------- I have seen none of this hot mobster mess of a skeleton. Why not make a hot mafia mess of a fanfic?