Gaster Stories

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)

This is a fanfic of my own adaption of the Storyshift AU from Undertale. I found that it was a little strange that only the main characters of Undertale got shifted, so in this Fanfic, pretty much everything will be different, while hopefully staying true to what's good about Storyshift Enjoy! Or I'll give u hava >:3 Have nice day!

« ˡᵒᵛᵉ ᵘˢ ᵗᵒᵍᵉᵗʰᵉʳ ᵃⁿ ᵉᵃᵗᵉʳ ⁱ ⁿᵉᵉᵈ ʰᵉʳ » kris x female reader/krissoul on A03, same title, username renoxeno on a03

The skeleton shakes his head slightly, a boney hand sliding across his skull. "Ah- well- that wasn't free Doll, 'course you'll have to pay me for that..." He trails off, his cocky smirk ever present on his face as he looks you up and down for a mere second, "...little favor." He pinches his pointer finger and thumb together before rubbing them together. _____________________________________ (Y/N) is a bartender that was kept secret from the after hours patrons at the bar she worked at for two years. Her boss not wanting her to associate with the people that would further pull her into a world that she was scratching the surface of just by working there. But after staying just a few minutes later then she was supposed to she stands face to face with a gold toothed smartass with a devilish smirk- his red eyes trained on her every move. ______________________________________ There is cussing but let's be honest- there's cussing everywhere. I was inspired by- @MissHoll-E-Socks with their story "Can I take you to dinner?" NONE of the art is mine.

She is an Artist. He is a Bad Boy. This should be fun. ||a Gaster!Sans x Reader fanfic - EDITING|| Painter was always the one that got away. From the cops, I mean. This mysterious figure was Ebott City's top graffiti artist, famed for their large wall murals that always seem to appear overnight. Nobody would ever suspect that Painter was goody-two shoes (y/n) from the art store on the corner of Magnolia and Wick street. G was the badass of the city. Always riding his smokin' hot red motorcycle all over the place, he is known all around for knowing everyone, having connections, and one one of the most popular monsters in the city. Although there is a lot of racism against monsters, he is the one to usually break up the fights, and only gain fame for it. He knows everyone personally, except for two people. (Y/n) the artist, and Painter the rebel.

This story features episodes of the series where some are full of humor and made for fun while the rest are deadly serious and filled with lore and is for people that are not familiar with the NC Series. (The one TOC made) No, you don't need to find where it is. Just read this for the content.

This is the absolute, perfect timeline. There's no Flowey, only Asriel. There was no demonic Chara. And Gaster never fell into the void. You come along, and free the monsters. Things change, relationships form, and some things get a little crazy at times. But things are good. You're finally... Happy.

Was perhaps from the moment that Monsterkind were hurled down Mt Ebott like trash that W.D. Gaster knew humans were rotten creatures? Or maybe it was instead during the war when he had been but a young child. Forced to flee from all he's ever known as battle raged across lands, then later as he grew up to create weapons of mass destruction. Perhaps, it was before he was even born that he had know this truth. Gaster was, after all, one of the smartest monsters to have ever lived, and most certainly was the smartest monster in the Underground. Because humans were dangerous, after all. They were miserable, miserable creatures that were powerful yes, but miserable. And his next invention would be the bridge to that gap between their two races. No. Rather then gap it was a chasm. He would create the first biological weapon, and once the barrier was destroyed then nothing would get in its way.

Monsters like you are the reason we will never be able to coexist peacefully. And for that, your end Must come. Is that all you have to say? I knew some of my creations were stupid. But you truly are idiotic. You are but a fraction of my creativity with none of my power.

W.D. Gaster, the royal scientist for King Asgore. He has done many experiments, most being successful, though some ended in failure. This time, Gaster has been working on an experiment to create living monsters! He has been successful once, creating a beautiful child with wings that he wishes to give to the king. The second time? Two skeletons, brothers, his sons... Follow the angel, (Y/N) throughout her journey. From her childhood with the skele-bros, to her returning from a long mission from the king.

Yes I'm aware my drawings are shitty and I'm trying to get better at it , but if you have a suggestion or anything that you would like me to draw (lol like I'll get any requests) just ask and I will because I have too much free time.

Naruto started questioning if his existence meant anything. His question was answered when his so called "friends" ganged up on him, when they were still like....13 (their parents gave them the idea and they liked it, still haven't been found out, they threatened Sasuke's life, that's why he hasn't said anything) and managed to kill him. After finding this out Sasuke became an introvert and a mute. His best friend was killed by people he thought he could trust. When the one person who actually understands sign language, his girlfriend, Frisk, Who seemed like an edgy person but, was only that way in public, disappears. A couple months later she returns and sees Sasuke was gone. She looked all around noticing Sasuke was no where in sight. She frowns and stays with Red (Underfell Sans) and Fell (Underfell Papyrus) until she is finally told that he had committed suicide. Red wanders around a field of golden flowers. He finds one glowing, above it a glitching, pure white soul. A human one. What does he do? (Frisk found a way to also to get Gaster out of the void and he is on the surface as well)

After years of hiding, training, and planning. The monsters are finally ready to take on the humans.

The monsters have been on the surface for over a year. But unfortunately, you're stuck in a forced marriage with one. Not only that, he has 2 sons who are older than you. How this tale unfold when things get out of hands between monsters and human?

this is literally just oneshots I'll do ships, I'll do angst, I'll do anything bois. Posts erratically, sometimes crossovers and dedications.

Hey, guys!! It's almost Valentines so why not make another rp book for undertale?? I know some people who signed in were late since I closed my first book so this is your chance to roleplay again!!

'The voice' had always been at the back of his mind. Taunting him at--seemingly--random throughout those nights in the pizzerias. How he'd hated it. But, since arriving in Newer Home, Bonbell(T.Bon) had been able to get help for his 'problem'. The voice had been silent ever since... until recently, when it seemed to suddenly return at full force. Taunting him at every waking hour, causing him to do things against his will, and even threatening those closest to him. Who is this strange voice? What does it want with Bonbell?

no se necesitan palabras para ser pareja.

When the monsters mysteriously vanish, the restored Prince Asriel must ally with Temmie, the enigmatic River Person, former Royal Scientist Dr. W.D. Gaster, and his old bestie Chara to bring them back. In this fanfic, we will see stories untold and interactions unseen, and perhaps the crew finding themselves in the process. Undertale and its' characters by Toby Fox Story by me Cover also by me (I'm an artist too) Welcome, and prepare to be intrigued

Je n'ai toujours pas d'inspiration pour les résumés... Il y aura 2 fins ( happy end et bad end )