Gaster Stories

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

The future of this timeline DISCLAMER All the main characters belong to Camila Cuevas. THE ADDITIONAL CHARACTERS ARE MY CREATION to give my idea on the future of Glitchtale having said that I hope you like it if so I invite you to follow me and leave a positive feedback ;3

Abandoned on Mt. Ebott at the tender age of five, young Harry's unsurprisingly died, but Death's always had a weird relationship with his variant... Meanwhile, before Flowey's revival as souless talking flower, Sans makes a discovery under the mound of snow, Papyrus has always wanted to be a big brother anyways. *Edited Summary (29/09/2025)

Underfell is a dark world with the major rule of kill or be killed. Even though children are suppose to be secluded from this rule, that doesn't stop monsters from hurting children. Undyne is a monster who lives in Waterfall. Under the care of Gerson. One day while out on a walk the fish monster stumbles across a baby. Though it wasn't any monster. It was a small little baby skeleton. (the cover is only temporary, until I'm able to make a cover for the story)

One day, Y/N was playing Undertale. Y/N finished the game, both genocide and pacifist. After the second pacifist ending, you wondered how life would be like IF the monsters actually were real. If the monsters would actually roam around and act as humans. That thought soon changed. ( Book Cover Picture is NOT Mine. I found it on google. Credits to the owner. )

4 years after monsters came about Ebbot (Y/N) was friends with the Dreemurr children. Being the master dancer that she is can gather her magic to do amazing things. Having been through a lot in the short 19 years of life. She finally meets a handsome monster who knows her big brother and who understands what she goes through. What will happen between these two?

Throughout all the humans to fall down, all the souls to shatter, and every reset, there is a memory. Where reality meets void, and fragments of memory are joined by seams of darkness, there is a presence. Years spent on the surface dull such things, reducing them to faint whispers in the deepest reaches of the mind - to vague terrors in the night. But a jump too far begins the unraveling, and the cracks that form are not so easily fixed. As the cycle resumes, the veil tears, and the presence grows stronger. Just how many cracks can a SOUL hold before it breaks?

Description kind of in the first chapter. ---- Storyline created by me. All characters belong to toby fox unless specified. Cover does not belong to me; it belongs to someone on wiki fandom Word count so far: 8,255 Also thanks for 63 out of 1000+ for origin!

Sans and Papyrus weren't the only experiments in Dr. Gaster's secret lab. ------------------------- "Why?" "Why what?" "Why do you hurt them? They ain't do nothin' to you, so why hurt 'em in the first place?" "Why aren't you asking why I'm hurting you? Do you not care what happens to you? "Duh! It's just... I put others before myself sometimes."

You are an experiment. Made from stars and dust. You can control magic. You are 16 years old. You were determined to search about rumors of Mt. Ebott. You going in into the cave and you fall. You are really Determined.. *ST☆RT* (Covers made by myself)

In an alternate reality, only one boy fell into the Underground. Adopted by the Dreemurrs, life was good. Until another child fell and everything changed. Ray and Asriel are now alone, without a family, without a world to call their own until they are teleported to another timeline: the Post-Pacifist time-line, where Frisk has led Monsters to the Surface into peace and prosperity for years. However, not all is well. Some Humans don't get along with the Monsters, and things only get worse when Sans reveals that a terrible evil is at work in Earth, sabotaging both Humanity and Monsterkind. Earth will be thrust into either unparalleled peace or all-encompassing war. Regardless of what happens, one thing is clear:The Ancient Days have returned and a New Age is coming. Cover Art by AshleyArtz

chip·per ˈCHipər/ adjective/informal cheerful and lively _____________________ Not everyone would've described this skeleton man as 'chipper' at first glance. But [Y/N], someone with first-hand experience on how he acts, would definitely describe him as such.

Gaster Experimented on you because you are half monster. This was a completely new experience for you. Handplates are not mine.

The story of Chara, the first fallen human. After being adopted into the royal family of the monster kingdom, Chara must discover their role in the fight to free monsterkind, all while battling inner demons to discover their true nature and identity. **NEW CHAPTER EVERY WEDNESDAY**

This is a fan made boss made by the winterer (Please subscribe to them as the make some great deltarune related stuff) What if Uzi had another reason she went outside of the bunker... what if she did this daily... to see a friend who has a litttle... speach impediment someone who isn't a drone nor human... Well find out on The Sock's Solver where we see our favorite little socky buddy and his friend go an a adventure with the gang as they help them with Uzi understanding that she has a virus, dealing with V's murderous behavior, and others as they help our socky friend see.... T H E S T A R S T O N I G H T. *You feel the weight of the universe on your back.

The Pacifist Won't Last Long Because The Demon Always Win. Once The Demon Won, The Genocide Start. Let's See Why Sans Change To A Heartless Skeleton/ A Dirty Killer.

You find yourself in a little weird town with very strange creatures. You're absolutely terrified and you don't know what to do or where to go. You left your past for a new future but everything here is just so different. These things are talking and walking. They are MONSTERS.... but they want to be your friend. Are you going to build up some courage and trust these totally scary looking beasts? It seems like one already doesn't like you because of a horrible past they all have lived. What's going on in this monster town? ((Self-Insert. After the escape. After timelines. No back story)) Cover :Pinned by Dan Stwalley of Pinterest

In this book I plan to do one shots for Gaster the royal scientist, for the underground. Requests are accepted and would really help in the making of this oneshot book. I will not do lemons due to the fact that...... (Throws hands in air and falls to knees) I do not know how to!! anyways hope you like the book. Sincerely, Lilly-pad

Yay, another story. I want to include Charisk, so... Expect some mentions of it. Thanks for helping me with a few things, syhraus. Can you really call this an AU?

please read!