1 - 20 of 4,564 Works in Grillby (Undertale)
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As you walked you failed to hear the screams of terror of a bus going over 100 miles per hour and the sounds of it starting to bust down- it speeds near the sidewalk—the people in it shriek. Their blood curling screams didn’t occur to you, your headphone quality being way too good. Your shoulders relaxed as you stretched your limbs; very much unaware of the danger and pain that would very much make your life way more miserable. You should move out the way. But- likewise, you are unaware. Of death flickering and time excited to cut your strings.
The bus is almost out of energy- and has been stopped.
Or so people thought.
It began to tilt- right where you were very much slowly walking. Andddddddddd—
It didn’t crush you to death.
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Its been 6 years since monsters have been living on the surface,
sans thought he could let go of what happened to him underground but his hatred for humans and itch for killing drives him to murder in secret.
but after you came crashing into his life everything changed, how can he keep his true self from you? -
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The thing about soulmates is, no matter what pries them apart, they always...always find a way back together
Chapters 1-3: Prologue
Chapters 4+: Main Story
*Chapters set to auto release every Saturday!
*This is a rewrite of I Have The Power of Gaster AND Anime On My Side. Same concept, with a bit of a serious feel.*
**Please be aware that this is not like my usual reader-inserts!! This story is in 3rd person pov, very vague description of a female reader. Unnamed (Pet names only). No use of y/n, y/e/c etc.**
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Years after monster and human society merge, a young monster returns to the Underground with the intention of finding a story to tell. She finds that story in a stack of well loved letters between one Cathode and Mailman.
NOTICE: The final arc of this story contains implied suicidal ideation and serious self-destructive behaviors. If you are not in a position to read this sort of thing, you can stop reading after Chapter 22 and skip from there straight to the epilogue!
Series
- Part 1 of Dear Mailman: Yours, Cathode
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Undertale Kinktober 2025 hypnosis edition by Chris_ghosty77
Fandoms: Undertale (Video Game)
19 Oct 2025
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New kinktober! One chapter a day for the entire month!!! With a list I made myself, very excited to show everything I've written.
Just like the other ones every chapter contains some form of hypnosis/mind control/brainwashing. I'll do my best to tag but i can't tag absolutely everything so look at the warnings at each chapter or in the table of contents.Series
- Part 14 of Undertail hypnosis series
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Dualtale AU: Two sides of truth by ED_Soul
Fandoms: Undertale (Video Game), Underverse (webcomic)
18 Oct 2025
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Description:
This story is based on the distant and little-known Dualtale AU,where nothing is as simple as it seems. In this world, unlike the original Undertale, monsters were never trapped underground. But what was the price for peace between humans and monsters? And how is it connected to XGaster, when these events unfolded long before the X-Event?
(Features characters from Underverse and Undertale,adapted for this story.)Author's Note:
In the Dualtale AU,the famous rule "Kill or Be Killed" is replaced by another:
"Speak out, and you will be silenced."
This is a universe built on lies and dark secrets that everyone holds.Every character has their own agenda and their own rules and it's better not to try and learn them.Series
- Part 1 of Dualtale AU: Two sides of truth
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Two souls in the Underground, intertwined by fate and by a prophecy that keeps them apart.
Heads up before you read:
In this fic, Chara is alive and far from a good person. They’re not a mindless killer, but a narcissistic kid. This is not a fluffy Charisk story. Chara and Frisk’s relationship is deeply toxic.Please look at the tags before you continue.
I've been experimenting with third person for a while now, and I've grown to like it a lot more than first person. For those who came from my other fic, which I promised a sequel for, I’ll try my best, but I’m not sure how that will go now that I’ve fallen in love with third person and started a new long fic. Please don’t be angry I will try to finish my other fic as well.
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Life On the Surface by RetroWrites
Fandoms: Undertale (Video Game), Deltarune (Video Game)
17 Oct 2025
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Summary
Frisk has freed the monsters.
Now all they need to do is to live on the surface.
Campy story with plot and sad stuff on top of regular Undertale shenanigans.
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Hatsune Miku vs. Google by Thep2
Fandoms: Vocaloid, Hello Kitty - All Media Types, Minecraft (Video Game), Left 4 Dead (Video Games), Five Nights at Freddy's, Sonic the Hedgehog - All Media Types, Mortal Kombat - All Media Types, Madness Combat (Web Series), Killer Instinct (Video Games), Detroit: Become Human (Video Game), Undertale (Video Game), Creepypasta - Fandom, Dangan Ronpa Series, Undertale Yellow (Video Game), Deltarune (Video Game), Roblox (Video Game), Doki Doki Literature Club! (Visual Novel), The Lorax (2012), To Catch A Predator (TV), The Backrooms - Anonymous on /x/, Dream SMP, Teenage Mutant Ninja Turtles - All Media Types, Euphoria (Anime)
17 Oct 2025
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Hatsune Miku was googling herself, when all of a sudden, Google returned an error message, but something more sinister is at play, and it's up to Miku (and later on Rin) to save Google from becoming priced.
Floor ideas and suggestions closed!! TY for those who gave suggestions!!
Series
- Part 1 of Hatsune Miku Saga
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Summary
After a quiet morning at QC’s Diner, everything goes wrong.
Kris, your long-time friend and neighbor, walks in acting strange, eyes empty, movements unnatural. In an instant, the diner collapses into smoke and shadow, dragging you into a world that shouldn’t exist.You awaken in a darker reflection of reality, a place where light fades, fire speaks, and kindness wears a green cloak.
With Grillby’s cryptic warnings and Ralsei’s comforting smile, you begin to navigate the mystery of the Dark World, searching for answers, and for Kris.But as warmth begins to bloom between you and the soft-spoken prince, one truth becomes harder to ignore:
You didn’t just fall into the Dark World. You were meant to. -
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Summary
For Monsterkind, the Surface represented freedom.
For Frisk, it's a return to some uncomfortable realities.
It all began with a simple wish. When that wish faded, Frisk tried to move on.
Except, 'moving on' was not so simple. Emerging from the Underground had put them in a worldwide spotlight.
From an unknown child, they had become an icon of great value.'The Golden Quiche'
What to expect from this story:
-Mystery Drama
-Anime
-Extensive Surface Worldbuilding
-Expanded History and Backstory
-Magic System
-More Magic
-Both new and old people.
-Feels.
-Gambits.What to not expect from this story:
-Toby Canon.
-Commonly agreed headcanons
-Slice of life. This is definitely not that.The Magus Compendium lorebook
Quiche Side Stories
My Links
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Devon searches for Frisk, one of the children he took care of with his colleagues until they suddenly dissappeared on an outing. He falls down a strange hole on Mount Ebott, unbeknownst to him coming closer and closer to reuniting with the one he was searching. But who or better yet what is that person who claims to have taken the child under her wing?
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Collection of prototype art, production art, fanart, commissions, and other images for The Golden Quiche setting.
Created because the internet is getting more and more difficult to keep track of old images.
Also, spoiler design reveals ahoy. Checking this art out presumes that you've already read the story.
Currently WIP. It'll take a while to compile the details.
Warning: Massive file sizes. Data plans beware.
Series
- Part 7 of Golden Side Orders
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Summary
I'm a currently self shipping with papyrus and its all I can think about oml. . .
Celia is a "underground" singer who fell into the underground after frisk. Unlike frisk, celia was mainly in snowdin and ended up befriending papyrus. Two years later after the monster's are freed, celia and papyrus finally end up admitting their feelings to one another! But a continuous nightmare of w.d gaster still haunts celia as she now has a connection with him.
Emily is a irrelevant character and is one of my oc's. You don't need to know or remember the lore to fully understand!!
Smut/ comfort is included later on.
- Language:
- English
- Words:
- 711
- Chapters:
- 1/1
- Hits:
- 6
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Resentment (old title was soulless pacifist but I changed it) by Joelmillerismysugardaddy2009
Fandoms: Undertale (Video Game)
15 Oct 2025
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❗️❗️❗️❗️❗️❗️My alternative headcanon (not Canon ) end of horrtsle if aliza was the same like in comics a true ,kind ,empathetic pacifist but when she gets captured by mettaton , none of the monsters come to help her so shes taken to the the barrier which breaks it but undyne changes her plan of starting genocide against the humans once she find out about how much healthier,strong and advanced humans have gotten (not to mention bombs/nuclear weapons ) +very moved by alizas effect on underground so she (begrudgingly) co operated with human officials so monster can get help ,training and therapy to integrate into society (so the conform ,work and DONT eat humans ) Everyone though aliza had died, but she didnt ,she come back !
But ,its different.
Her purple ,determined yet kind hearted had come back together after being shattered one too many times and drained by the barrier, instead now it was a coal black soul filled with resentment and annoyance .While monsters recover aliza cannot. -
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Summary
My version of Flowerfell. Frisk, Chara, and Flowey are the main focus because I think this friendship has a (skele) ton of potential that's sometimes overlooked.
I will not be shipping Frisk, Chara, or Flowey with anybody, including each other. In this story, Frisk is seven, Chara is thirteen, and Asriel/Flowey is twelve. I will include a few scenes of Sans x Grillby, and I may include Papyrus x Mettaton, but I'm not sure.
There will be angst, and a closer look at how Frisk's health would be affected by buttercups growing out of their skin. If you don't know what that would entail, please do research before reading. Saying that it isn't pretty would be an understatement.
There will be fluff and fun and shenanigans, it isn't JUST angst.
Edit: I decided to add in an original character. Boom. -
Unexpected Hero by LemonCake64
Fandoms: Undertale (Video Game), The Legend of Zelda & Related Fandoms, The Legend of Zelda: Twilight Princess, Deltarune (Video Game), The Legend of Zelda: Ocarina of Time
15 Oct 2025
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“Not so fun being stuck in some loop right? Trying to fight to protect what ya got, not getting a choice in it. If I had the choice I wouldn't remember either.” The words oddly felt comforting. Link let out a slow breath, closing his eyes for a brief moment.
He didn't feel alone for the first time in a long time.
And that?
That was terrifying.
“To be honest, I kinda gave up a while ago. Just sat back and let the chaos go on, felt like nothing I did mattered anymore. Everything would just be reset anyways. Stopped caring what happened, that was until you showed up.” The skeleton’s eyes bore back into the Hylian.
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Without History (maybe some things should stay forgotten) by Human_with_no_life
Fandoms: Undertale (Video Game)
15 Oct 2025
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Summary
After the barrier breaks, Monsters and Humans have learnt to live together on the surface, there is still many mysteries hidden in the underground. Most of them will stay forgotten or buried forever.
Until a ‘promise’ Sans made with Frisk leads to him telling a long and complicated story. His story, well not exactly 'his', but with as many questions as it answers, it seems to raise more. One thing is for sure; this tale will change everything.
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You’re young. You marry the wrong man.
You wish you were dead.
Be careful what you wish for, Seven.
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Or, you find yourself Underground surrounded by starving, tortured monsters who know you're the last soul needed to attempt to break the barrier again. You said you wanted to die. Don't back down now.
Series
- Part 8 of How To Be A Human Being
- Part 9 of I/Me/Myself
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Summary
The first story of the series. Follows our protagonist through his rebirth and until he (re)enters the Multiverse.
In case you couldn't tell I suck at summaries, I'll get better eventually, probably.The Major Character Death Warning is temporary and happens multiple times btw, it is a little confusing at first but you will understand as the story continues.
Prologue: Rootverse's Collapse (1)
Arc 1: Rebirth (2-7)
Arc 2: Meeting Familiar Faces (8-?)
Sub Arc 2.1: The Teeth Incident (20-41)
Sub Arc 2.2: The Magic Incident (42-50)
Sub Arc 2.3: Time For Shopping (51-59)
Intermission: 1st Major Time Skip (60-62)
Sub Arc 2.4: The First Human (63-?)Series
- Part 1 of Miseries of Metempsychosis