Gasterxreader Stories

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43 Stories

  • We Speak In Hands (Gaster x Female!Reader) by OreoDaSkeleton
    OreoDaSkeleton
    • WpView
      Reads 47,978
    • WpPart
      Parts 33
    Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the task is clear, since he'll make whatever sacrifice necessary to complete it. However, even a perfectionist can be blind to some of their own flaws. Gaster has a habit of pushing things or himself too far. An accident occurs in the lab. Whilst trying to save him; one of his lab assistants, Y/N, gets injured. Burdening himself with even more pressure and guilt to fix it, Gaster thinks that doing all of her work for her will cover up the incident. Still, the sad reality is that the damage can't be undone. Well, Gaster ends up spending more and more time with her. As a result, both of them gain an entirely new perspective of the other, they aren't just another monster in a lab coat anymore. Hey! It's Oreo aka Writer~San! Undertale, it's characters, and it's fanart do not belong to me. However, the story does!!! I hope you enjoy it! (^w^)~
  • Glowing Souls (Gaster x Reader) by WolfSans88
    WolfSans88
    • WpView
      Reads 7,930
    • WpPart
      Parts 7
    You are about 15, Gaster is 17. In this Gaster is an older brother to Sans and Paps. Asriel is about 6 along with Frisk and Chara, who show up later. You and Sans are best friends, but Gaster is amazing! At age 17 he is the royal scientist and you hope you can help him out.
  • FRUIT OF THE VOID (Gaster X Reader) by rechtbrecher75
    rechtbrecher75
    • WpView
      Reads 17,440
    • WpPart
      Parts 12
    Dark, darker, yet darker. The darkness keeps growing in your life. You don't know why, but there's someone relentlessly haunting you. He won't leave you alone, and every dream you have is a nightmare. It seems peace is currently impossible for you. What great evil could possibly want to harm you? You never felt that you had done any evil unto anyone else...if anything, you felt like your life was just a long list of things you'd never done. Was your insecurity in itself a sin? Don't jump to conclusions so fast, you poor, tortured soul. Harm may not be what this force wants to inflict after all. It may just be a distorted cry for help. In this post-pacifist route story, get support from well beloved characters as well as new ones, and delve deep into your curiosities and sympathies for one of Undertale's most mysterious characters. Dive in an reap the fruit of the void! Also on my Deviantart! http://rechtbrecher75.deviantart.com/gallery/60771559/Fruit-of-the-Void-Gaster-x-Reader
  • Meeting WD Gaster by mrdapperness
    mrdapperness
    • WpView
      Reads 6,194
    • WpPart
      Parts 4
    Reader meets WD Gaster. Takes place before the monsters are freed from Underground. Enjoy.
  • Just Leave (Gaster x reader) by _Bobundercover__
    _Bobundercover__
    • WpView
      Reads 1,037
    • WpPart
      Parts 5
    Sequel to the book Subject 108. Six years after leaving the underground,the dreams of your once beloved return as well as the calling of the mountain. But, the return of monsters and your own bitter secrets prevent you from knowing the whole truth. Will you ever be free from his grasp? (WARNING: GORE, SEXUAL SCENES AND STRONG LANGUAGE)
  • Gaster x Female Reader by FloweyTheGrouch
    FloweyTheGrouch
    • WpView
      Reads 824
    • WpPart
      Parts 8
    This story is about a girl named Y/n L/n. She barely managed to graduate highschool because she was one point away from failing. One day she decides to be a test subject to earn a little money on the side. She winds up in the company of monsters. She happens to meet a certain skeleton and her story goes from there. Disclaimer: I do not own Undertale. Undertale belongs to Toby Fox.
  • Onshots/Ideas by Pinkflames3
    Pinkflames3
    • WpView
      Reads 1,258
    • WpPart
      Parts 5
    Here is where I will be putting little bits of my stories. I will be updating the ones with the most votes or comments first. This is just a little thing I'm doing so I can get back into the posting things I write groove! I will update it as much as possible and probs once a day for a while... I have these stories stockpiled.
  • Living With Gasters (One-shots) [Gaster Gang x AU!Readers] by rubybadappledream
    rubybadappledream
    • WpView
      Reads 389
    • WpPart
      Parts 1
    One day a young adult human female was coming out work, and had a strange feeling that something wasn't right until she pass one certain building then everything went black as the female felt herself falling into an endless hole until what seem like hours she finally fell through and fell flat on the floor without dying. She ended up meeting four other versions of herself and meeting up five other monsters. Later on she started living with them, that female was you (Full Name).
  • (CANCELED) All of my pain(Gaster!SansXHybrid!Reader) by stressed_petals
    stressed_petals
    • WpView
      Reads 452
    • WpPart
      Parts 3
    you lived a bad life,to say the least,bullied,abused. Then,monsters came to the surface,you learned of your real parents, then met Him. (APOCALYPTIC SETTING) (SLOW BURN)
  • |~|Unknowning Love|~| W.D. Gaster X Reader by AshyTheGreat
    AshyTheGreat
    • WpView
      Reads 155
    • WpPart
      Parts 4
    Hope You Guys Like It! its my first book I will update as soon as I can
  • Love's Flames [Gaster x Reader] by deadlyyaalive
    deadlyyaalive
    • WpView
      Reads 523
    • WpPart
      Parts 6
    I'm writing this for me as well for you Uhm I have no idea what I'm doing so yeah- I'm trying to make it inclusive and crud so PLEASE be patient!! TikTok is @gastermybeloved lol- Cover is by someone, idk, but google didn't say so.. If they're on this app and want me to take it down, I will. Onto the actual book description: ~~ After the incident, you lie in a limbo. No idea what happened or where you are but you're there and confused. And then your here. In your favorite game's reality. And there he is.
  • Sneaking Suspicion || Gasterxreader by yourfriendmars_404
    yourfriendmars_404
    • WpView
      Reads 124
    • WpPart
      Parts 4
    Gaster x reader Reader named Sage bc Y/N is cringe /j I have writers block don't bully me
  • Void Heart by x_skellybones_x
    x_skellybones_x
    • WpView
      Reads 1,426
    • WpPart
      Parts 7
    The True Gaster x Female Fanfiction
  • Exposure Therapy [Grillby × Reader] by BoredNotBored
    BoredNotBored
    • WpView
      Reads 145
    • WpPart
      Parts 2
    I lost everything in that fire, my neighbors, my memories-my bed... In a way, it was a not-so-controlled swailing, gifting me a fresh start in Ebott. So when I finally got a job here, I thought the universe was giving me a well needed rest. Well the universe has a morbid sense of humor, that's for sure.
  • The Ghost Above Me (Gaster x Reader) by xsfolia
    xsfolia
    • WpView
      Reads 50,792
    • WpPart
      Parts 33
    Even though the Underground is now empty, except for some people, you still stupidly managed to fall in the once prison for monsters. Who knew you would get away from the prison with someone following you behind your back? Who would have known an echo flower would have revealed too many things? Who would have known you'd fall in love again? Words count: 55.608
  • Falling For a Monster (Glitchtale Gaster x Female Reader) by Sakretnyipisatel
    Sakretnyipisatel
    • WpView
      Reads 34
    • WpPart
      Parts 2
    Y/N or (Sky) Grey was Jessica's younger sister who works as a supervisee, where her older sister was the head of the Anti-Monsters Department, the District Leader of Determino succeeding Noah Rutrow. In appearance she is a normal woman who is kind hearted and nice to everyone, but if bad guys attacks her or her loved ones, there will be a risk that they will end up in a hospital. Since the car accident where Noah Rutrow and Ethan Ellis (her boyfriend) died, (Sky) hadn't dated anyone for 20 years. She soon met with monsters and became close with them, especially with scientist skeleton. Although she never thought that she will start to love someone more than a friend especially with a monster, maybe the skeleton will change her. Warning: art works are not mine!!! Second Warning: I don't own the Glitchtale!!!
  • Take Me to the Moon (Doctor Gaster x Experiment!Reader) by GenocidalMuffin
    GenocidalMuffin
    • WpView
      Reads 314
    • WpPart
      Parts 3
    (Cover art by Tumblr user rorischach) Tw for mentions of medical settings and tools, as well as possible death and light gore. Nonbinary Gaster (he/they), I will die on this hill. Gender neutral pronouns for the reader as well! Also loosely theming it around Rät by Penelope Scott Enjoy <3
  • 《Gasters X reader》 by KarmaAnimatesYT
    KarmaAnimatesYT
    • WpView
      Reads 111
    • WpPart
      Parts 1
    your name is Y/N and you got transferred into a void filled with tall skeletons and you are very confused...but...not afraid
  • between two souls | gaster x reader by meekicat
    meekicat
    • WpView
      Reads 477
    • WpPart
      Parts 7
    still need a proper thumbnail "do you think this will work?" he questioned, concern coating his face as he stared into your eyes. "I don't think, I know." you replied, confidence weeping from your soul.
  • Part of You (Gaster X Reader) by Understandable56
    Understandable56
    • WpView
      Reads 508
    • WpPart
      Parts 6
    You'll get it as you read I'm shit at describing what the heck books are about