Gasterblaster Stories

In a world where heroes rise and darkness lurks, a unique girl named Sans finds herself thrust into the vibrant halls of U.A. Academy. With a mysterious past and the pow...

YN Sans grew up wanting to be a hero. With the help of his best friends Frisk and Izuku, he aims to go to UA and accomplish that goal. Sans Male OC x Frisk

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 rais...

Basically what it says in the description... Just some pictures of Feraltale and BB Trust Au. Also some other pictures such as Temmie, Doomfanger, and The Annoying Dog...

Fgod Error, his little sis(Pixel), Null, and Void end up in vampireverse. Now this is pretty typical, the twist though, is that they are gaster blaster shifters! They ca...

Ink had a.. how do you word it? 'Odd' ? That's a good word, he had an odd dream. After waking up, since that day he's been having even more odd dreams. The Star Sans, In...

Sans and Papyrus' dad is the one and only Dr. WD Gaster. There mom is.. a werewolf?

[[UNDERTALE SPOILERS!!]] After frisk had done the pacifist run many times, something gone wrong... Flowey never showed up in the end. So frisk lived in the underground w...

An fgod Empireverse crossover.

⚠️Read first chapter for rules when requesting!⚠️ (requests will NOT be open again in the future) -*_This book is discontinued (Please don't read it, it's so bad.) _*- •...

First Draft The Player has taken over Frisk and is wreaking havoc Underground over and over and over. Sans has broken from the carnage and sacrificed himself to let Papy...

What is wrong with Sans, and who is Gaster? This is such a reused Description. Undertale belongs to Toby Fox.

Warning: this contains vore. If you don't like vore then please leave. Those who stayed, enjoy. Running through snow. "Help me!" " Fear" "It hur...

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...

Comicmaker12 from Wattpad You are a princess but that's not what you want. Your dad wants you to marry a guy you don't know. When you need to visit him an guest blocks y...

(DISCONTINUED. GO TO THE ACTUAL AO3 WEBSITE TO READ OTHER CHAPTERS) https://archiveofourown.org/works/5350673 It's over. Frisk's journey has ended in the best way possi...

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 typ...

This is a GasterBlaster!Underswap!Sans fic in the world of Underswap. Sans (or Blueberry) is a ten-year-old skeleton who isn't allowed to leave home. While his father (G...

𝕬 11 𝖞𝖊𝖆𝖗 𝖔𝖑𝖉 𝖈𝖍𝖎𝖑𝖉 𝖍𝖆𝖉 𝖙𝖗𝖎𝖕 𝖆𝖓𝖉 𝖋𝖆𝖑𝖑𝖊𝖓 𝖉𝖔𝖜𝖓 𝖋𝖗𝖔𝖒 𝕸𝖙. 𝕰𝖇𝖔𝖙𝖙 𝖘𝖎𝖓𝖈𝖊 (𝖄/𝖓) 𝖒𝖊𝖙 𝖒𝖆𝖓𝖞 𝖒𝖔𝖓𝖘𝖙𝖊𝖗𝖘 𝖚𝖓𝖉𝖊𝖗𝖌�...

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...