Dr. Gaster & Mr. Black (Undertale AU) - "𝘏𝘰𝘸 𝘥𝘰 𝘺𝘰𝘶 𝘸𝘳𝘪𝘵𝘦 𝘭𝘪𝘬𝘦 𝘵𝘰𝘮𝘰𝘳𝘳𝘰𝘸 𝘸𝘰𝘯'𝘵 𝘢𝘳𝘳𝘪𝘷𝘦?" ᴹᵉ ᵃˡˡ ᵗʰᵉ ᵗⁱᵐᵉ. - Wattpad

Dr. Gaster & Mr. Black (Undertale AU)

Reads 723
Votes 64
Parts 16
Time 1h 44m

Reads 723
Votes 64
Parts 16
Time 1h 44m

alphys artwork asgoredreemurr crossover dadster death dr frisk gaster hurt-comfort hyde jekyll lyrics majorcharacterdeath mildviolence murder musical ocs papyrus sans toriel undertale

An Undertale twist on the classic "Jekyll and Hyde" Broadway musical. After having been rescued from the depths of the Void, Dr. Gaster resumes his role as Royal Scientist--alongside Dr. Alphys. Now that Monster Kind is no long in need of SOULS, Gaster sets out to begin studying the one thing Humans and Monsters have in common--good and evil natures. In believing it to be greatly beneficial to both races, the Doctor sets out on his new line of research. But, such a pursuit of knowledge can be quite the fine line, and crossing onto the wrong side can be disastrous.All Rights Reserved

alphys artwork asgoredreemurr crossover dadster death dr frisk gaster hurt-comfort hyde jekyll lyrics majorcharacterdeath mildviolence murder musical ocs papyrus sans toriel undertale

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16 parts

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× [Sickness] × || Undertale Fanstory || The Gasters/Skeleton Family by Nanaz_Nazmaki

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 on the bed, just laying down or sitting on it under the blanket. The sickness can be seen from his face, half of his white skull was a little bit darker than the rest. Gaster and Papyrus had no idea what kind of illness Sans has, but they decided to take care of him no matter what, hoping that the sickness will soon gone either because of the medicines Gaster gave him, or disappears itself. But alas, The sickness gotten worse... -------- UNDERTALE (c) Toby Fox --------- This have nothing to do with Undertale's canon characters or story. This is just a fan story I made because the idea stuck in my head for a few while and I'd like to share it with all of you. So, enjoy!

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: Genocide by CassBunnys

"In this world, its kill or be killed" - Long ago, two races ruled over Earth: HUMANS and MONSTERS. One day, war broke out between the two races. After a long battle, the humans were victorious. They sealed the monsters underground with a magic spell. After the war, the monsters retreated into the deepest part of the Underground, which would be called, "Home." - Note: In chapter one i NICKNAME frisk "Sam" Due to the fact you dont figure out their name until the end of pacifist so i had to put a nickname to make it easier to write and read. Sam is a neutral name so it should be fine. - NOTE: All lines with this symbol " * " is going to be in Wing Ding font in the final release of the book. But for now, it is already deciphered for you! - *So yeah! This is book one of my Undertale Series, which will be 2 books in total. *The book is Fanmade of course, Support the original game by Toby Fox. *Since its Undertale, i have to warn you guys obviously that there will be action and mature things. And book one is Genocide, so... *Follow my Instagram: @Djcasso -

Across the Timelines [an Undertale Fanfiction] by missdisappear01

(ORIGINAL Version. Not revised) No one ever expected for the timelines to cross, that is, until there were two of them. The lovable and friendly Frisk, and the evil killer, Chara. With an experiment gone wrong, and a strong connection between the two boys, can Frisk and his friends change Chara's view of monsters?

Repo Man (Mafia!Sans x Reader) by morrow-

In a startling post-apocalyptic world, society is divided into two orderly classes. The human race stands on top, untouched by nuclear war in the city of Chicago. Monsters are at the bottom of the food chain, confined to live in run-down apartments, minimum wages hard to come by, the backbone of the work force in Chicago. They often find themselves the victims of senseless violence, dropping by the dozens each day. Tensions rise and anger grows between the two groups, a civil war seems all too likely. And with humans and monsters so scarce after a nuclear war that ravaged the planet, they cannot afford anymore losses. All at once, at the wrong place at the wrong time, a human finds themselves thrown into the midst, and the fate of the planet may rest in their hands.

A Different Kind of End - Book One - Reset by Toasty-Writer

Hatred is like an infection, if left to fester it only spreads and becomes worse, until there is little to no hope of return. Frisk had abandoned her life on the surface, she had no expected to survive the fall, even less so make friends with the monsters rumoured to live under the mountain. So what happens when she leaves and is all alone once again... What happens if she listens to the flowers advice..... Book one of A different kind of end. I do not own Undertale, or the characters used, simply the story concept.

Broken Timelines ✔️ by Meepaa

I WROTE THIS WHEN I WAS 15/16 I'M REALLY SORRY LADS Chara is stuck in a spiral of Evil. Sans and Frisk are happily living on the Surface. The LOVE is gone, and replaced with love. All Gaster needs to do is interfere with a moment.

Reset {UNDERTALE} by emotistic-optimistic

*FEATURED STORY* As Judge for King Asgore Dreemurr, Sans has seen a lot of strange stuff. But when he wakes up with the feeling that something is completely wrong, he decides it's time to investigate with the only monster who could know what was happening: Royal Scientist W.D. Gaster.

Undertale x male reader - A bullet to the head *Season 1 + 2* by kinder1000

"A man nearly kills you and your response is to track him across the whole underground... When you set your mind to something you get results... I like that." In this AU frisk is able to break the barrier and complete the true pacifist run. Whilst saving asriel and chara. The monsters were about to make the over world their new home until a mad man seeking revenge comes barrelling through the underground.

Undertale: Fallen Angel by WymanStep

Having escaped their cruel imprisonment within Mount Ebott, monsters have settled on the surface for six years now. Their human savior, Frisk, now struggles with the busy life of being an ambassador. Soon, tragedy strikes, and with a civil war brewing back home and every timeline now at stake, will the prophesied angel manage to keep their happy ending? Undertale's world and characters are owned by Toby Fox. This is a non-profit fan novel. Please support the original game.

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Slide 1 of 10

× [Sickness] × || Undertale Fanstory || The Gasters/Skeleton Family cover

Undertale: giving soul cover

Undertale: Genocide cover

Across the Timelines [an Undertale Fanfiction] cover

Repo Man (Mafia!Sans x Reader) cover

A Different Kind of End - Book One - Reset cover

Broken Timelines ✔️ cover

Reset {UNDERTALE} cover

Undertale x male reader - A bullet to the head *Season 1 + 2* cover

Undertale: Fallen Angel cover

× [Sickness] × || Undertale Fanstory || The Gasters/Skeleton Family

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 on the bed, just laying down or sitting on it under the blanket. The sickness can be seen from his face, half of his white skull was a little bit darker than the rest. Gaster and Papyrus had no idea what kind of illness Sans has, but they decided to take care of him no matter what, hoping that the sickness will soon gone either because of the medicines Gaster gave him, or disappears itself. But alas, The sickness gotten worse... -------- UNDERTALE (c) Toby Fox --------- This have nothing to do with Undertale's canon characters or story. This is just a fan story I made because the idea stuck in my head for a few while and I'd like to share it with all of you. So, enjoy!