Undertalegaster Stories

Even though the Underground is now empty, except for some people, you still stupidly managed to fall in the once prison for monsters. Who knew you would get away from th...

"Do you not want to go back home? To the surface?" °°°°°°°°°°°°°°°° "No." °°°°°°°°°°°°°°°° "Why?" °°°°°°°°°°°°°°°° "Because my home i...

WARNING: THIS CONTAINS HIGHLY MATURE CONTENT (BLOOD, VIOLENCE) READ AT YOUR OWN RISK Money can change a lot of things. It can even change your destiny. Plunge yourself i...

One day, Sans fell sick. His sickness came out of nowhere and it cannot be cured no matter how many medicines Gaster gave him. Because of the sickness, Sans stayed still...

The fall lasted for mere seconds, and yet it felt like an eternity. The adrenaline rushing through your veins proved useless, as there was nothing you could do. You hit...

"No no, my ego would never leave. It's part of my charm~" "I'm pretty sure that charm is just bullshit. Being Spamton's assistant meant being a lot of th...

If you have a request, you can comment or message me! I'll do lemons and fluff, whatever you request. Gaster Gang goes to Bunnymuse! Photos not mine unless said!

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

hello! i'm back! :)

It was a pleasant night for (Y/N), that is until a portal traps her in a place with magic talking skeletons. Will she be able to leave or will she be stuck there forever...

In the undergrowth,time has reseted.As usual,Sans is the only one who remembers Frisk and how they freed them,only for the world to weirdly reset later on in the year.He...

Ok,Ok, I Know Most Other People Have Already Done This But I'm Really Into The Fandom So Imma Just Do It Anyways ;-; Also I Will Be Doing Gaster x Gaster , Gaster x Read...

There's a girl who lives alone with full darkness around her. She's familyless and had PTSD. Her name was Syafiqah, who run away the girl from been killed. But one day...

When Stars's past was dark and confusing, someone came to help and give some clarity. After that, Stars never saw the stranger again, until he is in the void. A Fanfict...

My friend told me about an interesting story after the events of Undertale Genocide. Spoilers!

............to think that everyone would live normally without you, knowing that everyone you once loved had forgotten that you were ever a part of their lives, and no o...

An alternate version of W.D. Gaster from Undertale, Perfectionist doesn't vary too much from the mysterious and popular character, except... he never died. Perfectionist...