Undertale-au Stories

"You shall seal the blinding light light that plagues Human and Monster dreams You are the vessel You are the Hollow Knight" •Somewhat of a reboot of Someth...

Chara(Cocoa) x MaleReader Any art here ain't mine.Credits goes to the artists *ShiftFellGold Chara(Cocoa) By CutieGrumpyCerym -Tumblr -DeviantArt Creator of ShiftFell-G...

this is the 2024 remake of my past two undertale au showcases. a lot of aus i no longer have, others have more information, completely reworked or have new designs! i fi...

(Alphatale and Ten no Kami belongs to Shadikal15) Once of the TransVoid, an entity named Ten no Kami, is the spawn of a Being, who is named MalesGrow, resembling a black...

The story follows Team Hope and Team Void. Two multiversal and dimensional organizations, one good and one villainous, and both rapidly expanding. It follows the story o...

when stores are made with reborn, there are manly 2 ways it goes 1. it's silly goofy and unrealistic 2. it is really realistic and had a lot dark thems aling with people...

There will be a lot of texting between sanses. A lot of HUMEROUS stuff And sometimes, I'll write stuff like every other novel I won't name every character I'll use here...

Waking up in another world is frightening, but waking up as a Toddler version of My OC? The multiverse must hate me or something!

OH SHIT -alpha/deadwill

This is a "book" of all the ship children I have made for my Undertale Books and for my future UT books here. They will all be made in GachaClub seeing as I'm...

UnderShard is an Undertale AU where there is a glitch as a result of a hacker trying to implement their own character into the game. (Special thanks to @America50_Areic...

What happens when during a Genocide Run in Undertale, the timeline gets corrupted..? Undertale by Toby Fox.

Are flowers capable of transmitting feelings? Are flowers even capable of feeling? ...How about flowers that became other beings... ...what do they feel...? Fear... Empa...

(This story is base on Underswap so yes I kept the last part of the title just put Above since this is doing after the Pacific Route. It can contain spoils from the game...

Frisk is curious about something happening in the underground .so she and Flowey fall down and return to the underground.But has everything is different now in bad way.H...

This is the first 'x reader' I've done. I normally do a sans x a sans but this is an x reader so I will have a bit of trouble with this.-

Dream and Nightmare, (the most well known when it comes to positive and negative energy-) accidentally get themselves stuck in a 𝚍𝚒𝚏𝚏𝚎𝚛𝚎𝚗𝚝 𝚖𝚞𝚕𝚝𝚒𝚟𝚎𝚛𝚜𝚎...

This AU will describe everything that looks basically the same, but now monster have an chemical inside their body. And there will be one villain that will rise and chal...

DISCLAIMERS: 1. I do not own Undertale or its characters. Props to Toby Fox and the Undertale team for gifting us the beauty of Undertale and the characters. This story...