Your Best Nightmare (Undertale) - Destiny - Wattpad

Your Best Nightmare (Undertale)

Reads 90
Votes 5
Parts 9
Time 1h 41m

Reads 90
Votes 5
Parts 9
Time 1h 41m

experiment gaster genocide papyrus sans soul undertale

Destiny was the sister of the purple soul kid who fell in. When she went looking for him, though, she fell in as well. But what happens when she is found by the royal scientist?All Rights Reserved

experiment gaster genocide papyrus sans soul undertale

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9 parts

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Cries of the Fallen (CANCELLED) by VeronicaS189

Rating M because of mild violence :) In the surface once again, Sans just can't be happy. He has seen this too many times, it's just not special anymore. Everyone seems to notice there's something wrong, even Papyrus, and when past ghosts start haunting the older brother, he will have to try with all his might not to let his soul break. A man forgotten by everyone but one. A broken soul. A world without RESETS. Everything could go wrong. HEAVILY BASED OFF CLANNAD. REALLY. AND HANDPLATES.

Undertale: giving soul by Author-Dayo

This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a new time line comes a new story and this one is not like the others. W.D gaster a father of two children is called on an unusual discovery, the product of something unknown by monsters or man. The smallest addition to his new life and others around them. With no one but the Gaster family and the protection of the Royal Family, She will learn much about herself and the people around her.

Undertale X Reader by Multiplefandomsgirl

Frisk and her sister (Y/n) have fallen down into the world of monsters. What will happen? Will they survive? Will they be able to escape without losing their souls? Or will they bring destruction to each and every monster in the underground? What will they decide?

Mixed Souls by Greywolf98

All her life, Kelsi and her sister, Cassidy, have heard stories of Mt.Ebbot and how the people who go up there alone never come back. She never believed them, until, her sister and her friend, Frisk, vanish and go up there alone. While out in a search party, Kelsi gets separated from the others and falls into the mountain. When she learns her sister and friend are in a Genocide run, she does everything in her power to bring them back and save them. She evens finds a secret about her soul. Along the way, she makes friends with monsters and even a certain skeleton has hidden feelings for Kelsi. Will Kelsi save Cassidy and Frisk? Will they leave the Underground? Can she protect her friends? May contain LV- Levels of Violence; Undertale belongs to Toby Fox

Darkness' Eternal Bride (Gaster x Reader) by xsfolia

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 into a life of romance, science, disappearance and misunderstanding. ________________ "When you get better, I'd like to kiss you" ... Gaster only wanted to conduct an experiment. He surely didn't want his life to be taken over by weird feelings. He also wanted the only thing he couldn't really have. He wanted you. What will he obtain? Will his research finally be completed? Or will he have to start another one? As for you, will you be able to move on from the past? Words count: 81.390 Also contains mentions of nsfw [Rankings: #1 in #gaster (08/21/2022), #5 in #xreader (08/21/2022)]

UnderAsriel by FatalityWanes

Chara has one objective: RESET back to when they themself fell, and save Asriel from his demise. With all the Genocide Runs the now-free Frisk goes on for them, they're able to amass a big enough collection of SOULs to do exactly that. The only problem is, Asriel remembers everything that happened when he was Flowey. And he isn't too happy about it... In this new timeline, Kelsa, the SOUL of Bravery, falls into the Underground shortly after Frisk. Determined to save her only friend, Kel teams up with a mysterious flower with a face to find them and rescue them from Asriel's notorious freezing chambers. Betrayed by many, and uncertain who to trust, Kel finds herself in the midst of an iron-fist dictatorship, fighting to restore the Underground to the peaceful place it used to be. But... all is not as it seems, and there may be things about Frisk that Kel will wish she'd never discovered... Cover art by yours truly :3 This story takes place after the events of Underhappened. You may wish to read that first if you haven't already :D

Universal Surface Angel by Lithriel

Reader insert. What if W.D Gaster didn't just get split between time and space, but actually ended up in your world in an abandoned hospital you called home? Your were a young child he decided to use as experiments to test human determination in said world and breaks physical laws to test human possibility? He knows of the powers you gained from his experiments... all but one, this one allows you to tear realities just enough to teleport into them. Knowing of Undertale you felt bad for the monsters stuck below in their world and wish to help them, but something goes wrong and you end up going to certain AUs and helping them, gaining the attention of some bad skeletons who now desire your power for them-selfish-selfs.

UnderVanquish (True Pacifist - Book 1.) by SoulerFlare

The story officially begins when Toriel dies in her universe mysteriously. Gaster with his allies show up and take her soul remains back to his lab to save her life. Toriel then had DETERMINATION injected into her. Most of the DETERMINATION was collected from humans in multiple different universes. Gaster created the perfect solution to end RESETs and genocide routes that plague The Multiverse. A new kind of boss monster with the ability to utilize the power of the savestar. With Toriel at his side as his daughter, he embarks on his quest to bring peace and balance to The Multiverse. However the savestar becomes corrupt, doing more than its intended function. If the RESET function is over-worked, it will erase a universe. The more universes that are gone, the more The Multiverse dies. They explore every universe they're able to, attempting to fix the savestar and rid the ability to RESET, helping others and themselves. ----- Note: This AU has themes such as Suicide, frequent swearing, mentions of needles and more medical equipment. Be careful upon reading incase you are sensitive to these topics! Also moments in the story of characters smoking and mentions of Alcohol. Note: All 6 of the finished Chapters are published. Chapter 7 is a Work-In-Progress! The AU is still in progress. Enjoy. UnderVanquish has two creators: SoulerClash and C!rquette. Co-Writers: Capt.Gunscar, Eversius, JK, Darkswaver, Hollow,Marble and Thegreatjade_yeet. UnderVanquish-Comic Creators: SoulerClash,Hollow and Marble. There is a Comic in Progress.

AnomalyTale by Juliennemakesstories

Anomalies, all diffrent types we can see, we got seperated from them by the barrier, we were still on the surface, but we will never get to see them again. A human originally climbed Mt. Anomaly, fell in, but then made friends with two creators of anomalies. Unfortunately, the plan for freedom of anomalies has failed, the human's soul was broken. After this, a few expeditions of human children with diffrent soul traits, climbed the mountain once more. When they made it to the end, their souls ended up being taken for some kind of magical energy to freedom. But in this new story, someone who is not human, journeys to the mountain. Will she find her freedom, or will her soul be surrendered? Looks like we will find out here in AnomalyTale. Enjoy!

Reincarnated as Sans twin brother by Sansdoll123

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 fullest, they will have to survive Gaster's experiments and war with humans. Just because Asgore became mad for absolute control over his citizens and the humans. Will the reader and his brothers find their freedom and a place to call home or die trying?

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Slide 1 of 10

Cries of the Fallen (CANCELLED) cover

Undertale: giving soul cover

Undertale X Reader cover

Mixed Souls cover

Darkness' Eternal Bride (Gaster x Reader) cover

UnderAsriel cover

Universal Surface Angel cover

UnderVanquish (True Pacifist - Book 1.) cover

AnomalyTale cover

Reincarnated as Sans twin brother cover

Cries of the Fallen (CANCELLED)

Rating M because of mild violence :) In the surface once again, Sans just can't be happy. He has seen this too many times, it's just not special anymore. Everyone seems to notice there's something wrong, even Papyrus, and when past ghosts start haunting the older brother, he will have to try with all his might not to let his soul break. A man forgotten by everyone but one. A broken soul. A world without RESETS. Everything could go wrong. HEAVILY BASED OFF CLANNAD. REALLY. AND HANDPLATES.