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The Afterlife Is Boring As Hell by JesterOSX
Fandoms: Undertale, Undertale Yellow, Undertale Red & Yellow
31 Aug 2025
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Chara is perfectly fine in the infinite abyss with nobody to talk to, thank you. So why do they have to deal with an overly friendly cowboy?
...Gaster is there too even though no one wanted that.
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The King and Queen disappear seemingly overnight.
Despite the councils efforts, the two heirs attempts, and the long wasted work-nights of Governor Holiday, the Undergrounds struggles increase in severity until drastic measures are needed. After the ruling council's flimsy excuse for their royals' absence, trust in their organization drastically decreases. The Underground grows suspicious, divided, and restless. The Council's hand is all but forced to into a rushed coronation of the two heirs, asking all to leave the era of mourning behind.
Asriel and Chara step up to rule, but on the day of their coronation, a wounded creature of unparalleled power steps through the barrier. Widespread panic, the uncovering of a secret plot, and a growing feud between the two heirs split the Underground apart. Chara's tirade for justice leads them down a darker, darker path, leading a grieving Asriel to pick up the pieces.
When a new human enters the equation, Asriel promises to end this madness for good. Even if that means opposing his best friend, the royal guard, and the entire Underground in the process.
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Deltarune by W. D. Gaster (and Dess Holiday) by DreamyWoolenDaze
Fandoms: Deltarune (Video Game)
02 Jun 2025
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There were multiple times in her life Dess could say she had really had it up to there with her mom and needed space from her.
Only once did it go too far.
In her anger she ran off in the middle of the night with nothing but the bag on her back, her beloved whiffle bat and a bag of Lightly Salted Hays Chips ™ (The only junk food her mother would allow in the house) in hopes that the fresh air would help clear her head.
Nowhere should have been more private than an unused weather bunker..
Is what she thought until she stepped inside and amongst the scattered papers and fast food wrappers was a strange man seated in front of the glow of a computer screen
Oh and his weird human roommate too
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Love is what brings two SOULs together. When you love someone, a part of your SOUL becomes theirs.
When they’re no longer around, those parts of your SOUL will continue to hurt, because they belong to someone who’s never coming back.
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“Guess our coexistence ends here, though, partner. It was really fun.”Series
- Part 3 of Monstertale
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Chara reaches milestones with their new family.
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A lesser monster would balk at the prospect, but not Gaster. To have a body, after so long with only his hands, conjured fingers grasping and groping and glancing off of the world he couldn’t touch? It was, to put it lightly, worth it.
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Deltarune Snowgrave/Weird Route but Berdly comes back from the dead to stop Kris.
Also included: stupid jokes, references of varying obscurity, possible mischaracterizations, wacky worldbuilding and a minor case of brainrot.Series
- Part 1 of deltarune: hasty internode - Side B
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Ten years have passed in the Underground. Ten years since Dr. Gaster took his sons Sans and Papyrus out of his lab, ten years since they moved into Snowdin town. Since then, more human souls have been collected. The Underground finds itself once again in great predicament after a child named Frisk falls down, unwillingly bringing a psychotic godlike creature along with him. As the Underground is threatened by destruction and mass Genocide, the cast must uncover a dark truth in a forgotten past and save the world before it is too late.
This fanfiction is now officially cancelled, there is only a brief summary for the ending, please be aware of that if you want to read.
Series
- Part 5 of Handplates Determination
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As the Royal Scientist of the Underground, Doctor Gaster was used to being given various tasks by the king of the monsters, Asgore. The first of them since they had all been sealed underground after the war was to help monsters settle down into their new home. And the second of them had been to establish a more consistent power source for monster-kind. Of course, the Steamworks had originally been developed to do the same thing, but the power it provided wasn’t nearly enough to cover all of it.
Over the course of several years, the Royal Scientist had designed the CORE and had it built, a much larger version of the Steamworks that managed to successfully run power through the entire underground. And it wasn’t even like his position had only been granted to him after being sealed underground, he’d been working for the king and queen for what must’ve been at least a century. Pros of being a monster who’s yet to have children, he supposed.
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A short story about W.D. Gaster prior to falling into his creation.
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- Part 1 of Undertale/Deltarune Fanfics
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Unfinished (occasionally dubiously-canon) snippets, deleted scenes, alt povs, pre- and post-canon junk, and some AUs within the universe of Gossip Merchant.
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- Part 3 of Gossip Merchant
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a 'real' family by metalgeargayz
Fandoms: Undertale (Video Game), Underverse - Fandom, Xtale - Fandom
12 Jan 2025
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xgaster wants the best for his children. maybe he could create the best for them in a different way...
- Language:
- English
- Words:
- 155
- Chapters:
- 1/25
- Kudos:
- 4
- Hits:
- 100
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Gaster had lost count of the days since he first entered the Void, but since that day, he had watched and analyzed each and every timeline there was. Just a few more resets, he calculated, and the timelines would start to mix. He had to make things right, stop the resets, and to do that he had to leave the Void.
UPDATE 2024: NEW EPILOGUE!
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Alternate Universe: Underfell
Sometimes, protection crosses a line and turns into sadism. And occasionally, in this harsh world, it’s hard to agree on what to do with the one who will never be able to protect himself.
OR Gaster receives some very, very unwanted parenting advice regarding Sans.
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- Part 2 of My Undertale Backlog
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After Canon: Pilot by CosmicFara
Fandoms: Undertale (Video Game), Persona Series, Mother 3 (Video Game), Dangan Ronpa Series, Skullgirls (Video Game), OFF (Game), Steven Universe (Cartoon), Gravity Falls, Splatoon (Video Games)
06 Oct 2024
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A love letter of sorts from me to the media that I watched throughout my younger years until now. Heads up: this is one huge crossover, don't worry, I'm working on a document explaining the worlds. One-shots and short stories.
Series
- Part 1 of After Canon
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You're a broke college graduate. You had a job previously and was unjustly given a pink slip with no way to pay for anything including rent and groceries. You are having to survive on the last of your funds. It's been a couple of months since you lost your job. You're looking endlessly for work, as your hopes are answered with a gruff voice and a proposal of a job that you wished in your wildest dreams that you could get it.
Will you take his offer? (Y) or (N)
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On that day, something emerged from the mountain. Following the return of magic gifted to Humanity, one of the people claimed to have been swallowed up by the mountain stepped foot on the surface world once more.
It was no monster, it was no human. It certainly wasn’t the child who went missing.
No.
It was something much, much worse.
A devil wrapped in human skin.
Series
- Language:
- English
- Words:
- 2,563
- Chapters:
- 1/1
- Kudos:
- 11
- Hits:
- 253
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Searching for ways to cross the barrier, Chara decides to make some use of her brother.
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- Part 1 of Undertale and Overtale
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The church. It's why monsters were sealed underground. It's why Chara ran away.
It's why Frisk ran away. It's why monsters will be freed.
It is the cause of pain and suffering. It is the end of pain and suffering.
In these pages, though many shall perish, all may be freed. -
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The second chance at life of one Doctor W. D. Gaster on the Surface, as well as the struggles and triumphs of those around him.
(Previous series entries are not required reading)
[ON HIATUS]
Series
- Part 5 of Will Happen, Happening, Happened