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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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?

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.

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:Secrets by ItIsComic

Remaster on my page - check it out! Sans has had an interesting past. A past that even his beloved brother barely even knows of. A past that he wishes could remain a secret. But when the questions start being asked, what does he do? These questions seem so little, yet they cause so much to happen. One little question. "Who is ??????" can change so much. A chain reaction from a single sentence can cause an entire world to crumble. Or maybe two. This is my first book so dont expect anything great. Inspirations: The "Better Times" trilogy by: @ANinnyMouse42 "Royal Blue" by: @dealialestine Started: 24th May 2021 Finished: 29th December 2021 A full 7 months of great fun with this book! Cover art by someone? I couldn't find the original owner :( Undertale by 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)]

× [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!

We Speak In Hands (Gaster x Female!Reader) by OreoDaSkeleton

Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the task is clear, since he'll make whatever sacrifice necessary to complete it. However, even a perfectionist can be blind to some of their own flaws. Gaster has a habit of pushing things or himself too far. An accident occurs in the lab. Whilst trying to save him; one of his lab assistants, Y/N, gets injured. Burdening himself with even more pressure and guilt to fix it, Gaster thinks that doing all of her work for her will cover up the incident. Still, the sad reality is that the damage can't be undone. Well, Gaster ends up spending more and more time with her. As a result, both of them gain an entirely new perspective of the other, they aren't just another monster in a lab coat anymore. Hey! It's Oreo aka Writer~San! Undertale, it's characters, and it's fanart do not belong to me. However, the story does!!! I hope you enjoy it! (^w^)~

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 x male reader - A bullet to the head *Season 1* [Completed] 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.

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.

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Slide 1 of 10

Across the Timelines [an Undertale Fanfiction] cover

Broken Timelines ✔️ cover

Undertale: giving soul cover

Undertale:Secrets cover

Darkness' Eternal Bride (Gaster x Reader) cover

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

We Speak In Hands (Gaster x Female!Reader) cover

Cries of the Fallen (CANCELLED) cover

Undertale x male reader - A bullet to the head *Season 1* [Completed] cover

Reset {UNDERTALE} cover

Across the Timelines [an Undertale Fanfiction]

(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?