Gaster Stories

Extra Scenes from "It's a Beautiful Day Outside..." If there's a particular scene you would like to see, let me know and it shall be so. The unofficial sequel

A young girl, Y/N, has one of the rarest soul types- -empathy. She can feel when people are having a bad day which leads her into meeting two skeletons. While one quickl...

These are just some Undertale Au's that I've made with the idea of making something new or remaking an Au that tbh makes no sense (or has "Good" lore) Mind you...

Harry Potter was master of death, he was use to ending in other universes/timelines. This time he ended up as a skeleton monster Remake of Death and wingdings om ao3 201...

You and your sibling, Frisk, have been living in a forest near the city for about four years now. Your daily routine has been unwavering since you moved here. Each day...

The young skelebros escape from the core and head to Snowdin. Grillby finds them decides to take them in but finds out it may be much more difficult than he thought. Pap...

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 ar...

Sans knew he wasn't like them... he was never one of their kind in the first place. Just an imposter. It was only time until his past came to bite him and they found o...

??? was a fan of undertale heavily but when she suddenly got hit with a truck (because everyone dies from trucks when they get isekaied.)she was expecting to be dead so...

The reader wakes up to a new life as a monster skeleton. In a new world, that's filled with monsters, humans, and magic. But instead of living their new life to the full...

Gods can't die... Right? - Seeds of calamity have been sown for millennia. Although they've shown to stay dormant, eventually they will grow. As centuries pass, each and...

I DO NOT OWN FORMER TIME TRIO, THIS IS A FANFIC! The owner of FTT is unknown but most likely Redrum. The human. It was all the human's fault. Everything I (we) gone thro...

Cover photo drawn by SodiePawp. Hello there! This is nman1983 and I am a male in his 30s that writes Undertale tickle stories, something of which I have been doing since...

Join the crew on various adventures ranging from mundane lounging at home, unleashing the beast in Among Us, and ruining friendships in Monopoly to epic quests, journeys...

[✋ ✌💣 💧❄✋☹☹ ☟☜☼☜] After your journey through the underground, despite saving everyone. You still felt like something was missing. Something or maybe someone.

Underverse self insert Includes Y/N's that might actually make sense REWRITE

Frisk sang at nightclubs almost every night; entertaining mobsters to earn a living. Murderers and the most violent criminals the city had to offer. She honestly thought...

There is SOMETHING deadly wrong with Papyrus. Something that Flowey can't quite describe, and something that feels FAMILIAR. Something that feels DARK. Yep! Something...

Just like any other Sans X MHA/BNHA, Sans dies but with Chara. Exactly 100 years later, Sans woke up in the middle of Japan. Will he get the hang of his new world? Unde...

[[A/N]] THE PROLOGUE WAS ORIGINALLY AN ENGLISH ASSIGNMENT. EXPECT LOW ASS UPDATES 😭 | | | 🌟⭐️✨️ | 🌙🌕 | GenderDream... The DreamTale of GenderVerse. Heart o...