Gasterblastersans Stories

Have you ever wondered that out of the thousands of humans during the human and monster war that not even one sympathized with the monsters? I bet you do, for I certainl...

A Snowstorm was due to pass Snowdin that day. It was just starting now. Papyrus was lucky that he was able to get home early with no knowledge of what was in store for t...

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...

Mostly just pictures and some comics on Gaster Blaster Sans transforming or being a Blaster beast already. I do not own any artwork or au's shown in this book. Hope you...

The barrier is finally broken, and at last all of monsterkind are free to walk on the surface. Again. Sans the Skeleton is skeptical. Why bother getting excited for some...

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...

After the barrier shattered, Sans started to display rather strange behaviors and physical changes. No one could understand why this had started to happen over the years...

(UNDER REWRITING!!) this is my first x reader so please be nice you are a werewolf like your pack but you cant change into a wolf fome you have the same strength stamin...

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...

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

The barrier has been broken for a few years now. Monsters and humans have been living in peace together . . . for the most part. There are rumors about a monster who...

[COMPLETE/PLUS EPILOGUE] Blue has always been the happiest and the most kindest to everyone, barely ever frowns at all. However after having a werid dream about a huge...

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Most of you probably already saw these in my art book, but I really wanted to digitalize these, as well as write stories to go with them. :3 Highest Rankings: # 11 in go...

This is a story about pain, trust, struggle and bonding. It follows the characters of Toby Fox's game UNDERTALE. It also introduces new characters. There is a new prop...

The monsters were released from the underground by frisk 6 months ago. you go to a school that accepts both monsters and humans. you get bullied a lot, but you never let...

Ok, so I did this book on quotev and now I'm moving it to here. There will be no author notes any of that (unless I really need to). So this is one of my first story's s...

Intro: The barrier was down. It had already been four week. Most of the humans were not pleased with the monster arrival, but since Mont Ebbot was a bit far from the c...

Mew?

many years after the war between humans and monsters, humans lived peacfully without the threat of soul absorbing monsters, however the peace lasted only a short while a...