Undertale-au Stories

"The Black Determination" In a world that appears ordinary on the surface, Yuto is the exception. A human child bearing a unique soul-pure black, forged from profound hatred born of a family tragedy he alone survived. When Yuto leaps from Mount Ebott, he is not searching for adventure. He seeks answers... or perhaps an end. In the Underground, Yuto faces a single choice-one that will decide the fate of entire realities: Will he find salvation and become the hero who masters his darkness to save the Dreemurr family and all monsters? Or will hatred consume him, turning him into judge and executioner of absolute genocide, imposing eternal silence upon a world that failed to grant him mercy? "The Black Determination" is a tale of two paths and one inevitable fate. A story that reshapes the rules of Undertale- where there is no mercy, no reset... only Yuto.

This is the sequel to ZoCuteTale. This is pretty much a bunch of related one-shots of Cutie and Zoey being cute, basically. I made the cover by using Kisekae doll maker.

Curiosity is a rather...fragile... thing. It can fuel creativity and inspiration, yet it can also lead to harms way. After all, curiosity killed the cat, right? But when one being becomes let's say...too curious... with said curiosity being fueled by a rather twisted personality, what happens when this leads to a dangerous curiosity to which could impact the multiverse for who knows how long and for who knows what way? What if said curiosity leads to a form of...experimentation?... When combined with such a dangerous curiosity, what if a certain Guardian of Positivity is particularly desperate to get back someone he had lost? Desperate enough that he may be willing to try...anything? {Knowing my story writing tendencies, I'm just going to go ahead and put a possible trigger warning for Blood, Gore, Experimentation, Death, Swear Words, Depression, Manipulation, and Violence.}

This Is my UT AU. Cover by Creator William. #1 undertale-au at one point Discord Server: https://discord.gg/9QgqUAe9pG

Welcome to this progressive reboot, almost 2 years later, in which I rewrite my old story of Team Hope & Void. The story follows the concept of Shattered Dream in the Undertale Multiverse. The fight for the fate of the multiverse is constant and ever consuming.

Rantale is a story created by me, Ranny, and it revolves around my OC, whose name is also Ranny. Ranny is the 7th human to fall into the Underground. He didn't fall by accident or being pushed by someone to jump into the Underground. Ranny jumped into the mountain, hoping his life would end there because of the mistakes he made and hoping to escape the feeling of guilt that haunts him all the time.

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.How is Frisk going to fix this

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 is a version of W.D. Gaster who never perished within his own creation, and otherwise last creation, the CORE, and reached the surface along with the help of the human, Frisk. Except, when he came to the surface, all he saw was chaos. Sure, he saw this in the Underground too, but, he figured it might've been due to their circumstances, being locked in a cave and all. Surely that would have a negative effect on one's character? Alas, even in the openness of Ebott City (for lack of a better name), the cruel ways still slithered into the minds of all Gaster faced. He could not stand this, he could not fathom it any longer... something had to be done. Gaster... -no, Perfectionist took matters into his own hands.

History of an AU with random fandoms in it. There are creepypastas, FNaF, Undertale and more. Hope You'll like it ~Author

I'm gonna regret this... disclaimer: this is fluff, lemons, and small smut. dont like then I would advise you not to read.

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 also includes spoilers for all of UNDERTALE, so be aware of that. This story was really meant for AU fans who already have a deep understanding of both Gaster and Undertale. Without such details, it won't make much sense at all. 2. I will be using a few headcanons throughout the Undertale community for unexplained things about Gaster, souls, magic, RESETs, etc. After two Genocide routes, there is nothing new...except for the return of an old friend. The former royal scientst, Dr. W.D Gaster, takes control of this world by stealing the human's soul and body. He is now dedicated to finding his memories and becoming known once again. Perhaps he can even save monsterkind, just as he intended to do so long ago. (this isnt meant to be some amazing story, really. i'm just sillying. sorry if you want anything original)

What would happen if, after Clover's Vengeance Route, Frisk fell into the Underground one year later?

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 dying Now Tony finds himself in one of the most confusing worlds thats any sane person can find them selves on while being a skeleton of everything

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

Sans and Fris- or should I say Chara are fighting and I was hiding behind the pillars to wait my turn to kill her. So many attempts she did and finally she hit me like Sans, while she was walking away to fight HIM I saw the RESET button. I had no choice but to press it. What will happen? Will there be Genocide run again? Or will there be a true Pasifist? Read the story to find out!

There are many different universes in undertale but met overtake which many things are still unknown

The Castle that laid home to Nightmare and his Gang has always been a mystery in itself, many assume that the Castle came into Nightmares possession after killing off the residence of an AU. Others say it was a leftover structure that survived the slaughter from Dreamtale. However the most interesting happenings would be how Nightmare and his gang behave behind its closed doors~ Who knows? We may encounter the unexpected here after all!

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