Gasterblaster Stories

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60 Stories

  • Darker Yet Darker by RealityFanReading
    RealityFanReading
    • WpView
      Reads 62
    • WpPart
      Parts 1
    (UNDERTALE Fanfiction Prequel) Gaster's tragic history as the underground's royal scientist, and the project that ultimately scattered him through time and space.
  • Chaotic Corruption ( a bittybones x Ultima!reader ) by Kitty_AnimationZ
    Kitty_AnimationZ
    • WpView
      Reads 21,206
    • WpPart
      Parts 5
    Y/N is an Ultima but she is also a soul mix. A soul mix is when two soul types combine and become one being. She is a mix of CHAOS and CORRUPTION. The strongest soul types other than Determination and Fear. Y/N was used as a weapon in a war. The Children's war to be exact. She has become emotionally drained since then. She hopes that the bitties will help her become more emotionally active. And they do...
  • A certain Bonely man by Danish407
    Danish407
    • WpView
      Reads 580
    • WpPart
      Parts 4
    It's seem sans has been reincarnated after died at frisk hand but there's different happening
  • FutureTale: Back to the Underground! by Yikes_Babby
    Yikes_Babby
    • WpView
      Reads 992
    • WpPart
      Parts 8
    Frisk has spent 8 years in the underground, during 4 of these long years her friendship with Sans grew to be something more, resulting in a beautiful relationship. Tragedy strikes leaving Frisk forced out of the underground, finding out not long after she's pregnant with Sans child. She decides the underground is no place to raise a growing baby, but this leaves the entire underground devastated and confused on the whereabouts of Frisk. Flashing 9 years later, her baby, a boy named Cyrus has just turned 9 years old. Half human, half monster. What happens when he gets separated from his mother and finds himself in the world of the monsters under Mt. Ebott? What about Frisk who was forced to leave the underground, who now has to go to receive her son? DISCONTINUED OFFICIALLY AS OF 5/17/2021
  • Our story by DevilcornHD
    DevilcornHD
    • WpView
      Reads 469
    • WpPart
      Parts 6
    It is about a little human girl who meets a scary looking monster that is actually very sweet. The two go on an adventure of a lifetime and meet new friends and fight enemies along the way. They will go through some nasty obstacles but they will stick together until the end............
  • My Undertale Drawings!!  by HollowAngel10151
    HollowAngel10151
    • WpView
      Reads 241
    • WpPart
      Parts 7
    Exactly what the title says! X3 enjoy! And if you want me to do and ink sans x reader I will! ( also the cover photo isn't mine)
  • Sans and Papyrus  by XxAli-AxXForReal
    XxAli-AxXForReal
    • WpView
      Reads 84
    • WpPart
      Parts 4
    I'm writing a fanfic on the back story of Sans and Papyrus. P.S most of this is based on pure theory
  • Niespodziewani GoΕ›cie /TΕ‚umaczenie/ by lachota3
    lachota3
    • WpView
      Reads 450
    • WpPart
      Parts 12
    https://www.deviantart.com/undertalethingems/gallery/all Ja tu tylko tΕ‚umacze ;)
  • 2 Sans and a Papyrus (Undertale story) by SpiritWolfNura
    SpiritWolfNura
    • WpView
      Reads 6,519
    • WpPart
      Parts 16
    W.D. Gaster never meant to fall in love during the war. But he did. It resulted in heartbreak, a pup, and a high LV. So he experimented. 10 years and no more kid. So he made more. Who is Gaster's child? Will Gaster ever be forgiven? Will Sans and Pap ever meet their sibling?
  • The Acts Of Resentment ( Dustale X Rwby )  by Atoms69
    Atoms69
    • WpView
      Reads 122
    • WpPart
      Parts 3
    What If I Told You That In A Once New Circumstances Dust Had Now Succeeded To Propel His World Of Infested Hackers, Destroying Frisk Soul With No Resets, Without The Complete 7 Human Souls Having No Way Out Underground He Uses His Once Abandoned Lab To Fix His Dimensional Machinery, He Is Sent To Rwby Will He Prove Himself, Regaining Full Redemption? Or Is He Going To Pursue A Once Snowy Path Using Violence.
  • UNDERTALE: HATRED by LiteralGarbago
    LiteralGarbago
    • WpView
      Reads 36
    • WpPart
      Parts 4
    π€π§π¨π­π‘πžπ« 𝐝𝐚𝐲, 𝐚𝐧𝐨𝐭𝐑𝐞𝐫 𝐫𝐞𝐬𝐞𝐭. Sans, a lazy short skeleton is a victim, along with the entirety of his home and family to a human named Frisk and their friend Chara. After the thousands of times that Frisk has murdered the entire Underground, Sans didn't even know why he kept fighting. It was like he was some type of mindless NPC. However, one day was different. Even in the slightest change, Sans found an opportunity to strike, and finally kill Frisk. However, that was all false hope. Frisk was transported to another world, meeting someone who looked oddly similar to Sans, however, he had a dark shape to him, and black goo surrounded his body. He easily overpowered them, yet, he offered something. That's when Frisk knew, this was the start of an entirely new story. A new timeline. οΌοΌ©ο½Žο½“ο½ο½‰ο½’ο½ο½”ο½‰ο½ο½Žο½“οΌ α΄œΙ΄α΄…α΄‡Κ€α΄ α΄‡Κ€κœ±α΄‡ ᴄᴏᴍʙᴀᴛ Ι’α΄α΄…κœ± (α΄ŠΚœα΄€Ι΄α΄’α΄α΄œ) ʜᴏᴑ ᴛᴏ ɒʀᴇᴇᴛ α΄€ ɴᴇᴑ α΄˜α΄€ΚŸ (α΄œΙ΄α΄…α΄‡Κ€α΄›α΄€ΚŸα΄‡ ᴄᴏᴍΙͺα΄„) α΄€ Κ™Ιͺα΄› ᴏꜰ Ιͺα΄„ΚœΙͺα΄‹α΄€ -2est οΌ‘ο½ƒο½ˆο½‰ο½…ο½–ο½…ο½ο½…ο½Žο½”ο½“οΌ ɴᴏɴᴇ α΄Šα΄œκœ±α΄› ʏᴇᴛ! οΌοΌ¬ο½…ο½Žο½‡ο½”ο½ˆ οΌ₯ο½˜ο½ο½…ο½ƒο½”ο½ο½Žο½ƒο½™οΌ α΄„Κœα΄€α΄˜α΄›α΄‡Κ€κœ± ΚŸα΄‡Ι΄Ι’α΄›Κœ: 1.8-2.8α΄‹ α΄‘α΄Κ€α΄…κœ± κœ±α΄›α΄Κ€Κ ΚŸα΄‡Ι΄Ι’α΄›Κœ: 15~20 α΄„Κœα΄€α΄˜α΄›α΄‡Κ€κœ± "𝑻𝒉𝒂𝒕'𝒔 𝒂𝒍𝒍, 𝒏𝒆𝒓𝒅 𝒐𝒖𝒕 𝒃𝒓𝒂𝒉!" - 𝑭𝒓𝒆𝒔𝒉 P.S: THIS STORY IS IN OWNERSHIP OF @ThatWriterBoi, I AM JUST POSTING THIS ALONG WITH HIM SO IT COULD GET MORE RECOGNITION!
  • ... by UnderDiscontinued
    12
    ...
    UnderDiscontinued
    • WpView
      Reads 5,449
    • WpPart
      Parts 11
  • Eccedentesiast by dealialestina
    dealialestina
    • WpView
      Reads 103,514
    • WpPart
      Parts 25
    Eccedentesiast Noun Someone who hides behind a fake smile, when all they want to do is hide and/or die. (Cover art is not mine, and full credit to the artist!! (I cant find any active @ to tag them but if you can please let me know so i can give proper credit), Undertale is Toby Fox's, please don't sue me I'm broke)
  • New Bones - Gaster Blaster Gaster Sans by GraceTheSeaGriff
    GraceTheSeaGriff
    • WpView
      Reads 1,026
    • WpPart
      Parts 4
    Before the events of Undertale. . . All was well in the underground. A skeleton named Papyrus was training to be in the Royal Guard and his skeleton brother Sans was part of the Royal Scientist along with their father Gaster. All it took was one day to change the skeleton family forever. Undertale belongs to Toby Fox Disclaimer: This MY version of how Gaster Sans became Gaster Sans and eventually Gaster Blaster Gaster Sans. This means it is NOT just Gaster Sans.
  • FireIce's Past and update book by GadgetGuyGames
    GadgetGuyGames
    • WpView
      Reads 24
    • WpPart
      Parts 4
    The life and updates on the gaster blaster-human meta crisis
  • In love with master... [Sans x gaster blaster oc] by CinnamonToastEz
    CinnamonToastEz
    • WpView
      Reads 563
    • WpPart
      Parts 1
    Erin was a gaster blaster who was made by dr Gaster for his son Sans. After a few years Sans had grown up and had left the lab taking Erin with him, he had other gaster blasters but preferred his only female blaster. They confined everything with one another but when frisk comes into the picture, things get really awkward for Erin as she might just be given away by the little brown haired rascal. She may even have possible powers only Dr Gaster knew
  • soriel ship OC by BlueBerrySans2007
    BlueBerrySans2007
    • WpView
      Reads 50
    • WpPart
      Parts 3
    Disclaimer: In my OC (this one) Frisk is a female. This is not cannon and ties into the GZ sans AU because sans ate determination pills. i hope you like this!
  • My art by Fantomp
    Fantomp
    • WpView
      Reads 22
    • WpPart
      Parts 1
    Just stuff I drew
  • I didn't think you could love a freak like me (Gasterblaster sans x reader) by epplaeinp
    epplaeinp
    • WpView
      Reads 4,691
    • WpPart
      Parts 7
    A girl with a secret who meets a skeleton with the same one. Can they both control their fears and their forms for each other? or will one of them obtane the higher rank
  • Hiding in Sight (Sans and Papyrus GB Story) by SpiritWolfNura
    SpiritWolfNura
    • WpView
      Reads 14,321
    • WpPart
      Parts 14
    Dr. Gaster made 1-S and 2-P to break the barrier and start a war. When he disappeared, they were scared, confused, alone. They broke out of their prison and Grillby raised them. Many years later, they are on the surface and he comes back. They don't want to go back though.