Gasterxreader Stories

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46 Stories

  • - My Angel from the Sky - Gaster x Reader by MonicaGiudice
    MonicaGiudice
    • WpView
      Reads 91,516
    • WpPart
      Parts 30
    Suddenly you find yourself in the Underground, with no memories and an unknown and painful past. Your first encounter is Flowey and he tells you how weird and different your soul is. What does it mean ? What happened to you ? A fated meeting awaits you. The beginning of everything. THE UNDERTALE P.S (GasterxReader) The beginning of the story is set some years after the war between humans and monsters. #9theories 9/05/2018 <3 Thank you guys :D #8theories 10/05/2018 <3 #1 gasterxreader 16/08/2018 <3
  • Darkness' Eternal Bride (Gaster x Reader) by xsfolia
    xsfolia
    • WpView
      Reads 36,027
    • WpPart
      Parts 34
    WARNING: THIS CONTAINS HIGHLY MATURE CONTENT (BLOOD, VIOLENCE) READ AT YOUR OWN RISK Money can change a lot of things. It can even change your destiny. Plunge yourself into a life of romance, science, disappearance and misunderstanding. ________________ "When you get better, I'd like to kiss you" ... Gaster only wanted to conduct an experiment. He surely didn't want his life to be taken over by weird feelings. He also wanted the only thing he couldn't really have. He wanted you. What will he obtain? Will his research finally be completed? Or will he have to start another one? As for you, will you be able to move on from the past? Words count: 81.390 Also contains mentions of nsfw [Rankings: #1 in #gaster (08/21/2022), #5 in #xreader (08/21/2022)]
  • The Ghost Above Me (Gaster x Reader) by xsfolia
    xsfolia
    • WpView
      Reads 53,468
    • 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
  • Not Alone (Gaster X Skeleton!reader fanfic) by KawaiMoonShine
    KawaiMoonShine
    • WpView
      Reads 330
    • WpPart
      Parts 3
    Author's note: Brrrr this is my first ever fanfic I've ever made sksksk and for the first time, the reason for this is bc I got an idea for Gaster X reader fanfic! I guess I got inspired by other Gaster X reader fanfics or then it's (was) just an alternative version of my OC Thiara (whose a skeleton) "arrive" to the underground rather than canonically/officially being already in there, don't know! it can be both^^ But my god- I'm a bit scared tho lol since I've never done this before, I don't really want to make the characters wrong or something (might be off-character idk),,, But uh- yea, read below for the story description now,, -- (Y/N) is a skeleton who weren't trapped underground like the rest of the monsters when barrier was casted, but instead hid with her/his/their mother and her/his/their twin, but were one day found and captured.. or at least (Y/N) was. Their family wanted to rescue them, they all managed to run to the mountain where the barrier was casted, but the humans had catched up, only (Y/N) was able to get through the barrier to safety.. or rather pushed in as their rest of the family was killed. From there (Y/N) was found by queen Toriel and were taken for better healing to a certain royal scientist; W.D.Gaster! The story continues on..... -- All the Undertale characters belongs to Toby Fox!!! Reader belongs to you^^ I might give out some additional OCs or not, depends! Now babai~ Edit: I'll be using they/them pronounces for the reader-- might've forgotten to mention it before publishing anything,,,
  • |~|Unknowning Love|~| W.D. Gaster X Reader by AshyTheGreat
    AshyTheGreat
    • WpView
      Reads 167
    • WpPart
      Parts 4
    Hope You Guys Like It! its my first book I will update as soon as I can
  • Sneaking Suspicion || Gasterxreader by yourfriendmars_404
    yourfriendmars_404
    • WpView
      Reads 132
    • WpPart
      Parts 4
    Gaster x reader Reader named Sage bc Y/N is cringe /j I have writers block don't bully me
  • 《Gasters X reader》 by KarmaAnimatesYT
    KarmaAnimatesYT
    • WpView
      Reads 114
    • 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
  • _~^ May This Be? ^~_ {Gaster x Neko Reader} by Potato_potatoes131
    Potato_potatoes131
    • WpView
      Reads 2,952
    • WpPart
      Parts 6
    Your a neko: (deal with it) your 'Master' has thrown you into a pond that had a waterfall going to the underground. After falling 1000ft down, you landed on a soft yellow flower patch that broke your fall. (Yes there's a small patch of buttercups on a raft.) and you were terrible afraid of water, what will u do?
  • Glowing Souls (Gaster x Reader) by WolfSans88
    WolfSans88
    • WpView
      Reads 7,966
    • 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.
  • Kairos by Radio_Cherry
    Radio_Cherry
    • WpView
      Reads 1,100
    • WpPart
      Parts 6
    'Filled with power the Queen will rise but loving monsters led to her demise. (Y/n), Queen of Darkness' Frisk stared at the plaque and took a look at the tapestry. A girl with spade cheek marks, around her 20s held a parasol surronded by roses. She was accompanied by a monster who Frisk couldn't recognize but seemed oddly familiar. The two bore matching outfits, the girl a short sleeved purple dress with a white undershirt, a cresent moon decorating it. She wore long purple gloves as well. It seemed edwardian. The other wore a dark purple coat and pants. A white sweater underneath. Maybe they were a couple or something. Frisk shrugged at the thought and motioned for everyone to follow them further into the castle, missing Asgore's, Toriel's and Sans' long stares at the tapestry. "Is that....really them?"
  • Dark, Darker Yet Darker AU (W.D Gaster Romance) by s1mplyp0tat0
    s1mplyp0tat0
    • WpView
      Reads 1,676
    • WpPart
      Parts 3
    Watching your determination being extracted from your soul. Fills you with fear.
  • Scientist - GASTER X READER by NapstabIooker
    NapstabIooker
    • WpView
      Reads 149,864
    • WpPart
      Parts 19
    Hi guys! So this is actually my first time writing a adventure story (and xReader), so I am kind of sorry if it looks crappy!! ****** A long time ago, people were missing when they climb up Mount Ebott. They say there was magic, got lost, or even died. But when you discover the secrets of the mountain, you will get attached to it, and even maybe meet a new 'friend'... ||an W.D. Gaster x Reader fanfic|| •I do NOT own any type of artwork that is included here in the fanfic, all art goes to thier respective owners.•
  • Fallen Angel (Gaster x reader) OLD by Feniksiara
    Feniksiara
    • WpView
      Reads 153,034
    • WpPart
      Parts 49
    OLD AND BADLY WRITTEN THE REWRITE IS POSTED ALREADY DISCLAIMER: The god figure created in this fanfic is purely fictional. He is purposefully made to be prideful and cruel and is not supposed to represent any god. I am religious myself and I did not intend to attack anyones believes with this book. An angel. Sign of hope for humans, yet a nightmare for monsters. Powerful, skilled and...beautiful. But what happens when one rebels against the cruelty towards monsters? What happens when she's banished to the underground, only with wings as a painful reminder of who she once was. What if she's found by the Royal Scientist? What if the nightmare every monster is scared about, is just as broken as they are? And what if she'd find something she would never imagine she'd find in the underground...love? *Cover edited by me. The pictures used in the story belong to their original creators. If any of them aren't okay with them being used, I'll take them down* Started: 21.12.2018 Ended: 22.08.2021 09.03.2019-Number 1 in gaster! 07.02.2020- Number 7 in undertale! 25.02.2020- Number 4 in undertale! 15.04.2020- Number 1 in undertale! 11.10.2020- Number 1 in papyrus! 03.06.2021- Number 80 in fanfiction!
  • Doctor Darkness {Gaster x Kind!Reader} by tyjowrites
    tyjowrites
    • WpView
      Reads 337
    • WpPart
      Parts 1
    It's been a few years since monsters had poured out from Mount Ebott unexpectedly. You were always a kind soul, so you had very little problem adapting to the newcomers. Even if some monsters were bitter toward humanity, you always tried your best to befriend them and show them the kindness that your ancestors had not. Through that, you made many monster friends, none of them you would trade the world for. But perhaps you could not change everyone's mind. You always thought that with the right amount of patience and persistence, you'd eventually break through to the other side. However, this didn't seem to be the case for the mysterious man you encounter one night. His anger and hatred frightened you, yet you couldn't bring yourself to ignore him. There was just something about him the drew you in closer, even if you knew it could be dangerous. Image used for the cover can by found on http://atomicshitpost.tumblr.com/post/135177890511/is-there-anything-i-can-do-for-you
  • (CANCELED) All of my pain(Gaster!SansXHybrid!Reader) by stressed_petals
    stressed_petals
    • WpView
      Reads 458
    • 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)
  • Living With Gasters (One-shots) [Gaster Gang x AU!Readers] by rubybadappledream
    rubybadappledream
    • WpView
      Reads 399
    • 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).
  • Fallen Angel(Gaster x Reader) REWRITE by Feniksiara
    Feniksiara
    • WpView
      Reads 2,032
    • WpPart
      Parts 9
    (Cover drawn by me) The angels weren't supposed to pick sides. They were created for one reason and one reason alone. Protect the humans from any threat. There was no such thing as a grey area when your entire worldview was supposed to be black and white. And yet yours ended up shifting. The things that once felt right now didn't and you did the one thing no angel ever dared before. Went against God themselves. Your punishment however, ended up changing your life in a way you could have never expected. And it was all thanks to a family of three skeletons and a fateful meeting that couldn't have gone worse. Started:29.04.2023 Finished:??? DISCLAIMER! THE GOD IN THIS FIC IS NOT BASED UPON ANY RELIGION. NOR ARE THE ANGELS. IT IS PURELY FICTIONAL AND NOT MEANT TO FOLLOW ANY OF THE RELIGIONS EXISTING IN THE REAL WORLD. PLEASE DO NOT MAKE COMMENTS ABOUT THIS BEING INNACURATE TO SOME RELIGION OR ACCUSE ME OF ATTACKING YOUR RELIGION. I ASSURE YOU IT IS NOT MY INTENTION.
  • ask gaster x Reader fanfic by WDCharaAKADingsOrcha
    WDCharaAKADingsOrcha
    • WpView
      Reads 2,177
    • WpPart
      Parts 13
    you can and Dears us both just STAR ASKING AND DEARING US OR SAMETHING
  • We Speak In Hands (Gaster x Female!Reader) by OreoDaSkeleton
    OreoDaSkeleton
    • WpView
      Reads 51,550
    • 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^)~
  • Late Night Patch-Up by moonlights_haiku
    moonlights_haiku
    • WpView
      Reads 4
    • WpPart
      Parts 1
    You keep going, keep pretending, keep hurting. Communication always helps. - Part 2 of To Get Rid Of (One Fades In side series)