1 - 20 of 79 Works in Protective Grillby (Undertale)
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Summary
Papyrus is mourning, though he knows his lover is not dead. Only missing.
He’s only missing them to the point of wanting to rip his soul out.
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You are not a person.
But perhaps a certain skeleton can make you one.
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Or, reader is a shapeshifter that feeds off of love who hoodwinks Papyrus into thinking they’re his child. Does it count as found family if you stalk them first?
Series
- Part 6 of How To Be A Human Being
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Month of Monsters 2025 Writing Challenge by SilvermistAnimeLover
Fandoms: Undertale (Video Game)
16 Sep 2025
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A collection of oneshots and shorts based off one-worded prompts from the September Month of Monsters Writing Challenge from my Discord server. Prompts will be listed in the first chapter, and they range from fluff to angst. Feel free to check out the first chapter (directory) to see what each prompt is about!
Fair warning, most will probably be Sans or Frisk centric.
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Papyrus has spent the last two and a half years on the surface as the official Monster Mascot, and his very important job requires every important assistants! A shame his previous employees haven't been the most kind individuals!
You've spent most of your life riding shot gun. Maybe it's time someone's on your team for once.
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Or,
A Papyrus/Reader but him being the mascot of the Monsterkind is taken SUPER seriously and the Reader (you!!) is his brand-new assistant who used to work with really shitty people and is ELATED with how much of a sweetheart Papyrus is, and Papyrus is on his 5th assistant lowkey praying this bitch isn’t racist and is pleasantly surprised.
I proposed this on my Discord (welcome to any of my readers!) and couldn't stop myself from bringing this to life.
Series
- Part 2 of How To Be A Human Being
- Part 1 of Unsweetened Lemonade
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Monsters can get pregnant obviously, that's how they're there. But what happens if a male monster gets pregnant? More importantly, how is Sans able to get pregnant? And how will he tell Grillby?
Series
- Part 2 of Undertale Life
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It was bright. Too bright, what had just happened? Flickers of memories passed through Sans’s mind in a whirl. “Doctor Gaster!” He heard a faint scream. It was muffled under his own screaming of his mind.
“Someone get the kids out of here!” Another voice said. The bustle around him felt as if it was going in slow motion. The colors faded from his vision as he collapsed onto the floor.
“Brother! Wake up!” A small voice peeped. Sans felt his consciousness fade. The nausea he felt was too strong, and he welcomed the darkness.OR
Sans is left to care for his rambunctious younger brother Papyrus, his health suffers as a result of overworking. On top of that: memories of the past plague his dreams. Sans must work to overcome his trauma while also allowing himself to be supported by those who care for him. Tags to be updated as chapters are released.
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After the fall of the Barrier, life on the surface has begun to settle—but not all wounds heal with freedom. Frisk and the monsters navigate the quiet rhythms of a new world while remnants of the Underground’s past ripple beneath their feet. Between sleepless nights and strange seismic readings, old instincts stir, and a journey begins—one that may unearth more than just stone.
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It's 1935 and Myth's whole life has been nothing but hell under the heels of the Ebott Dusters Mafia. A plan is set, she and those she cares for are making a run for it, hoping to start a new life in the monster capital of the world, Omega City.
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(CROSS UPLOADED FROM WATTPAD!!!)
Ever since the barrier was broken and monsters rose to the surface once more, it seemed like despite the odd reception that they received from the Humans of Ebott, everything was starting to take a turn for the better. But almost a year later, the others couldn't help but notice something different...specifically...SANS was different. The usual laid-back, wise-cracking skeleton was acting...strange. His smile was forced, he didn't tell jokes, he's deprived of sleep, and the demons that were thought to have been put to bed ages ago keep rising back to the surface to torment him. It was no secret anymore. Something was wrong...VERY wrong...but what?
Series
- Part 6 of Undercaged!AU
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You've been harassed constantly by your roommates, because of Dahlia. You've been pushed past your breaking point. You will have your revenge. Your gonna ruin their relationship.
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"It's a Beautiful Day Outside... by Septiplyierfangirl
Fandoms: Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
19 May 2024
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......"It's a beautiful night today. The stars are twinkling, the crickets are chirping...On nights like these, villains like you, should be burning in hell"......
It was a simple, ordinary day. Just another reset. Telling joke and puns, making puzzles with Papyrus, forced grins, hourly naps, breaks from his multitude of jobs... Everything was as it should be. Then he was back at Snowdin, taking a regular stroll with Papyrus and his dad.
"Sans! Look out!"
Sans turned around as a wormhole-thing opened up. The vortex winds had already lifted him off the ground, slowly pulling him toward the hole.
"Sans!"
"Papyrus, help me!"
...."Hello? Hey man, are you okay?"....
Series
- Part 1 of "It's Beautiful...
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Searching for Who Asked. (Biography of who gives a fuck?) by 60xSleeping_Aroundx09
Fandoms: Undertale (Video Game)
05 May 2024
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Waking up so much smaller than you fell asleep is a good reason to worry, but here are a couple bigger reasons to freak out...
You're a Gaster Bitty, and not your run of the mill Goopy Gaster, you're a fuckin Bitty looking just like before he fell in the Void, with monster reserves to match. Turns out there was never a model of Original Gaster in the bitty releases. Meaning you don't have to rely on no "Owner" to make sure you don't dust...
And it does no good for your soul when you realize you've been accidentally adopting every hurt skeleton you see when all you thought you were doing was sharing your Magic reserves with a hug so the other bitties you know that don't get affection wont dust...
What do you mean that the Grillbitties you saved were trying to become your mate? No way, they're just being nicer than usual! And I didn't happen to magically adopt all those hurt skeletons that are definitely not my sons- "Dad?" "Yes son?" "You are thinking too loud, stop it." "... Yes, son."
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If anybody wants to adopt this, please do, because I realise now that I really don't like it 😭, I don't care about credit or anything
A man looking for a job finds an opening to directly work for the blind Prince of his kingdom, meeting the Prince himself seems to have subtly sparked some feelings for both of them. Being rewarded the job leads them down a long path of lingering touches and unending conversations when they're alone.
TL;DR - Sans is a Prince and also blind, Grillby needs a job and Sans is being appointed a new Knight, shenanigans, love, and probably sex ensue.
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- Language:
- English
- Words:
- 362
- Chapters:
- 1/1
- Kudos:
- 30
- Hits:
- 309
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Summary
burnt out
sick of the recurring timeline...
everything is starting to break him down little by little...day after day
drink after drink...
he needed something different
a smoke would be good... just needed a...light?
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rule after rule you'd follow
the older you had gotten the more there were.
but you had been fine with it...right? -
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Summary
((CROSS UPLOADED FROM WATTPAD))
Grillbz has been there for Sans for as long as they both can remember. For both good times and the bad, they never once abandoned the other for anything.
Grillbz has seen Sans during his best and his worst...
Though one of the worst times is often best left forgotten.
(Takes place Pre-Cage of Bones)
Series
- Part 2 of Undercaged!AU
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I’m not good with summaries still- so this is a story where there’s a multiverse where they are all deities, so like deity error sans- would be of balance, destruction, codes, strings- etc you get it?
So deity reaper sans- who was deity errors lover- dies due to protecting their multiverse from something- of course deity’s of their multiverse never really die- they get reborn. However sometimes a few are unlucky enough to get reborn in a different multiverse- or without their memories until they’re older. Etc also deity’s have different names. So expect that. Pov changes to.
And when I say reborn..more like pop into existence again.
- Language:
- English
- Words:
- 671
- Chapters:
- 1/?
- Kudos:
- 14
- Hits:
- 120
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Summary
Gaster just wanted to find a place to get some drinks at. Y'know, a place to tide him over for the next week or so of all-nighters, and child handling.
Then he had to go and ask about the bartender's weirdly familiar polishing glass.
Now he's remembering a life he never once lived, and so is the bartender.
Simply put, what the fuck is going on?
Or Gaster just wants a break. The universe says fuck you in the form of a cup.
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He moved on from her, yet still kept careful watch, and moved to the girl in green. He barely skimmed the surface of her soul when he felt like he was looking into a lake. He could see nothing, no gleaming hints, or hidden truths, only his own failures staring him back in the face.
And then it happened; hands.
The hands of the damned, those he had killed and those that had died beside him, thrusting out from the lake, dragging him down, and down, and down…
They were laughing.
But then he was standing back in his bar, without having moved at all, looking directly into the red eyes of the girl in green as she twirled the cylinder in her hand. Instead of being empty, it now contained a gleaming crimson mist, silent and gruesome as it consumed all within.
“Have fun?” she asked, not breaking eye contact.
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“What is a friend?"
“Didn’t I already answer that one bro?”
“I know, but could I hear you say it again please?”
“I- Heh, you know what, okay, a friend is someone who’d you trust and care for no matter what- “
“-and would do the same for you. Do you think Mr. Grillby is our friend?” Papyrus added.
Slightly baffled, Sans began to tuck the blanket around himself and the small skeleton while pondering a response, “yeah…I suppose he is,” he finally said with a smile in his eyes.TLDR: Papyrus befriending the underground, one monster at a time.
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Flames of Love at Grillby's (Poem) by AmyAurora for Bexii
Fandoms: Undertale (Video Game)
24 Mar 2023
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A poem inspired by "Snowy Skies" by Bexii:
archiveofourown.org/works/41652396The poem is a heartwarming tale of Grillby and Papyrus (Undertale) who form a deep and romantic connection at Grillby's pub. It highlights the message of acceptance and love, reminding us that true love knows no boundaries.