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  • 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  
  • 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...

  • {R A T T L E D * B O N E S} ~ Sans x Reader
    130K 3.3K 36

    You were walking on Mt.Ebott, when suddenly - you fall down a hole! You wake up there with no memory but your name, age and birthday (that might change, though...).

  • Mindless (Sans x Reader)
    89.1K 3.2K 22

    What if you had no choice? You are being controlled by a Demon to kill your friends and the one you love over and over again. Each time you gain control over the demon it's usually too late. When you finally get close enough to stop the demon how do you manage? A SansxReader undertale fanfic written from your point o...

    Completed  
  • Lost in Despair (Lonely!Sans x Mute!Reader)
    432K 21.6K 49

    Press your fingers together, zip your lips shut, and throw away the key. Once it's time to be free, go fetch that golden key and speak. Unless someone stole your golden key and threw it in the depths of the Black Sea; your nightmares and worst fears. ---- "Even if it kills me a second time." ---- The series- First...

    Completed   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...

  • 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