Gaster Stories

This story takes place after the events of the pacifist ending of Undertale, where all the monsters have already left the underground. However, that won't stop problems from starting again; Frisk and his friends will have to face a new threat. DISCLAIMER: This story is based on the fact that the first human fell underground in 2015 and the last in 2060. Here, Deltarune is a sequel to Undertale; therefore, Posttale is not a copy of TobyFox's creation, but an adaptation, or what is also called an "AU." Because of this, there will be things that are different from canon and adapted to my personal preference, with no intention of disrespecting anyone; for example, the gender of the humans: Kris: M Chara: F Frisk: M Don't like it? You can leave. Understood? Great. Contributors: @Fwrevy #Deltapad • Undertale and Deltarune are property of Toby Fox. • Images used in the story are property of their respective owners or made with AI. *#27 in the "Undertale" category 6/13/2026* *#3 in the "Deltarune" category 3/3/2026*

The long awaited new edition to the children of the void series. A boy, born in a world of mystery and confusion, with powers no one had ever expected A brother who seemed small compared to his siblings, the "weakest link" They never knew just how strong that little boy could be, and the sheer volume of the power he possessed

A Deltarune fanfiction taking place across multiple years, before Dess' disappearance. A coming-of-age story (with some horror elements) with Dess and Asriel as protagonists. This fanfiction will take inspiration from, but may not be entirely faithful to, Chapters 1-5 of Deltarune, and may be influenced by future chapters, while maintaining its own identity, lore and story. - CONTENT WARNING: Gore, Death, Sexual themes: including sexual orientation and attraction, gender identity; and potentially explicit scenes, both explicitly sexual content and more psychological-horror and body-horror oriented content. If, for any reason, you are uncomfortable with any of the aforementioned, it is advised that you don't read this. - The story will be translated in Italian as new chapters get released, but it may take a while, due to some adaptation difficulties. - Written by: Mourning Star Characters and Setting from Deltarune (Created by Toby Fox) Cover Art by: pomb-o Any additional artwork featured in any of the chapters will be credited No AI will be used in the writing or the art

A self insert of the author of this story turns into a self aware Dreepy with all his memories intact in the Pokemon Mystery Dungeon universe but instead of becoming a hero that does dungeon crawling, he becomes a dishwasher in Spinda's Cafe where the story turns into a surreal workplace sitcom full of: fourth wall breaking, reality warping nonsense, and pure internet humor. IBADTADITPU may include:

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. Also posted on AO3 as clubofsnakes where additional chapters later on will appear there and not here. I was inspired by- @MissHoll-E-Socks with their story "Can I take you to dinner?" NONE of the art is mine.

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

UNDER REVISION (Check out Memories!) BTW- Sans is human in this. The story will explain. He has a sister named Chelsea and he is your "cousin".This story contains legal age drinking, a hint of suicide and might have a lemon if I decide to write one. Idek (Future me here, fyi- I'm not writing a lemon EVER in my defense I didn't know what they were but my friend said to put that soooo....) [^well variety IS the spice of life soooo };) I might...] ENJOY

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.

Sans and Papyrus were just trying to have dinner. They didn't expect things to blow up (literally). Now they have a destroyed machine and a young babybone that they suspect as a Shifter. Where did they come from? And who's life privilege they need to remove? Because this babybone is clearly been abused or worse. Now then, where's that parenting books Sans been storing since Papyrus a babybones, he's definitely need a review if they want to keep the kid from getting killed. At least the kid's adorable...

You wanted to escape your life... you wanted to die but then a monster change everything...

You can go to book one to see the first god if you want :)

(mafiatale AU) monsters were freed from the underground and almost instantly, humans attacked, of course, they fought back. Your parents were killed in a shoot out, leaving you alone. You had to learn how to survive the streets. Though you never thought you would be captured by a skeleton. ((This will have multiple AU characters so be warned. Reader is a girl. May have possible smut in the future, no plans as of now))

A touch of a hand, A longing embrace, A whimsical kiss, A one night's stand. ~*~*~* She's a masterpiece, and... she's mine. ~*~*~*~*~*~*~*~ (Somewhat borrows concepts from Echotale's version of Gaster!Sans.) (Female reader insert.) (Swear Warning, as well as, though there will be no lemons, there is chance, and high likelihood, of steamy moments.) (He's a skeleton, what do you want from me, you necrophile.)

After the monsters are set free, they aren't too keen on befriending humanity. They won't show themselves yet. They will get revenge on the war the humans had waged years ago. Now they attack in secret, getting patrols and assassins prepared at nightfall. One of the pairs of assassins is Gaster!Sans and his brother. When they find a girl who is pretty, kind, and peaceful, maybe they will have a change of heart after all. (Gaster!Sans X Reader)

My second story pls don't judge! Spelling errors will be found. I will try to do my best! PLEASE GIVE RECOMMENDATIONS TO ME I HAVE A POOR MIND!! Update: Won't be updating anymore, I don't think.

LIGHT FINDS HIMSELF IN THE UNDERTALE NEUTRAL UNIVERSE! WHAT WILL HAPPEN?WHO WILL ASK AND DARE HIM RIDICULOUS THINGS ON HIS 4TH WALL BREAKING JOURNEY?!

Gaster finds himself unable to help his sons grow up. He watches their adventures. He endures every timeline with them. He watches as Sans grows further into the darkness. He watches as Papyrus stays the innocent little cinnamon role. He watches as they make friends. He watches as they make enemies. He watches as they live, and as they die. He watches everything they do. But he can't do anything...

ALL FLUFF! ALL CHARACTERS! I HAVE NO IDEA WHAT I'M DOING! No images shown are mine (unless I say so).

Love W.D. Gaster ? Then u are ready for a lovely adventure to begin my friend ! Please read on !

Undertale multiverse before you ask. Error couldn't keep up anymore. It was to hard to combat creation. But fate spoke to him again. She was always kind to him. Healed all his wounds and took over as a illusion of error of things got ruff. She created error not ink here. But it's gone to far. She contacted a friend of errors. This guy was different. He worked like core but instead of seeing the multiverse. He saw everything. Magic types, teleport location, next attack, a portal, ones thought, but what was important right now was seeing things outside her multiverse. He couldn't be harmed by void so traveling he found a lone au with no multiverse and no balance. He built a warphole here concealed by outertale void. And fate was going to make certain error has a better life. She's given up on her multiverse. It's beyond broken and abusive. But she was warned error would have one magic only. If fate was good, if error was smart enough to heal himself. If fate herselve gave up. Error travels to a different place in human form. But someone wants to join him... Warnings: Some brutal details Suicide mentions A new and kinda dumb writer (me) A large cross over A lacking mention of what's going on at errors home multiverse Good fate deity Angst (possibly) Occasionally long explanations A different-ish idea Enjoy this cross over. Also shutup about the cover ill fix it later probably Written by CozyBrazenPrawn1234. Awards: 6/15/2034 #1 in ErrorCore 6/15/2034 #8 in GlitchTale (which is funny)