1 - 20 of 39,912 Works in Sans (Undertale)
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Nightmare and her gang work to maintain the balance and have a little fun, meanwhile, chaos ensues and, slowly but surely, Blue starts wondering what being on the other side is like until something forces her hand...
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Dear Mr.Douchebag by J4ck0l4nern_AND_T4bby_JK
Fandoms: Mouthwashing (Video Game), Break In Series (Roblox), Regretevator (Roblox), Roblox (Video Game), Forsaken (Roblox), Skullgirls (Video Game), Deltarune (Video Game), Gravity Falls, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Alien Stage (Web Series), Undertale (Video Game), Cookie Run (Video Game), The Mandela Catalogue (Web Series), Five Nights at Freddy's, ONE - Cheesy Hfj (Web Series), The Stanley Parable, 文豪ストレイドッグス | Bungou Stray Dogs, Eddsworld - All Media Types, Dream SMP, The Amazing World of Gumball
12 Jul 2025
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Summary
Scary Larry didn't hate prison. Sure, the bland concrete walls may or may not remind him a bit of the cell Mary had been keeping him in just days before he came here, but all in all, this wasn't the worst experience in his life.
Besides the place wasn't that bad, the decor, or lack thereof, aside, it was quite nice.
His cellmates weren't the worst either he supposed. Both Pest and the Player were okay at the least.
He was almost glad they hadn't gotten a fourth cellmate yet. It had surprised him at first, that each cell had exactly four people in it except theirs, it made sense in hindsight, the fourth bed in their cell sort of gave its purpose away just by existing, but so far the prison hadn't had a need to give them a fourth cellmate, fourth bed be damned.
Or at least those WERE his opinions. But NOW, Jimmy Mouthwashing is here. And just GUESS which cell he's been put in.
Series
- Part 2 of Dhar man plauge
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art of my frisk oc in noradrenaline! made it during class lmfao
the centermost one is how they look during the fic
for spoilers' sakes, ill leave the rest up to interpretation :)Series
- Part 2 of dreamtemple
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A creative slump sends you searching for inspiration in the wilderness, but one misstep lands you under a mountain instead of on top of it. As you navigate a world filled with puzzles, quirky monsters, and an unsettling sense of déjà vu, a certain skeleton keeps popping up—startling you with his sharp wit and toothy grin. There’s something about him, though… something your heart can’t ignore, as if it was always meant to lead you here.
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Calcination Syndrome by Fells_Kitten (SquirrleyCow)
Fandoms: Undertale (Video Game), Underfell - Fandom
12 Jul 2025
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Calcination: The process of heating a substance just below melting point to induce change in physical and chemical properties, to remove impurities and ensure specific reactions and outcomes...
Grillby has a perfectly normal attraction to his long-time friend and nightly regular at his bar, Sans. He's been dying for a chance to act on that attraction but keeps backing-out before he can follow-through. After patiently biding his time for the perfect moment he finally makes his move.
Sans is contently unattached to anyone romantically. He has his friends, he has his brother, he has the bar and Grillby's usually quiet but comforting company. What more could he need? He hasn't considered a life outside of living with his brother and the occasional random hook-up to blow off steam. Sure, he's noticed Grillby, he's not blind after all. But from the outside looking in, it's always felt like Grillby was just as happy being single as Sans is. Being a single dad, even with a grown kid, probably changes your standards for a partner anyway. Well, until Grillby kidnaps him that is.
Waking up chained to a bed kind of changes your perception of a guy.
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Hello, my name is Mazy, now that you will be a reader soon, you are known as a Mazyville, I'm nonbinary and go by they/them. My favorite fandom is Undertale and its alternative universes. I write semi-literate so all can understand well. English isn't my first language, though, so don't be too bitter.
I'm not a new writer, but I've never written on AO3 before. I'll be taking requests for any fanfiction Idea you have, not a short, but I'll make a not-so-long story about it. Just comment with your main idea or a summary of what you want your story to be, it can be ANYthing and ANY ship.
READ THE REST OF IT TO FIND OUT MORE!! AND READ THE NOTES!!!
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What if at the end of Undertale: Yellow's pacifist route, Sans appears.
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you wanted to be loved so desperately,
that your fingers shook with ityou're not beautiful
but you could be./emily palermo (slightly altered)
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An ABOVEtale by ahhhhidk
Fandoms: Undertale (Video Game), Deltarune (Video Game), Undertale Yellow (Video Game)
12 Jul 2025
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Based kinda on thestrongestjewel’s eepytale on tumblr but with my own little spin on it.
In a world where monsters and humans talked it out and DIDNT go to war. Chara tries to just live their life with their very chaotic adoptive family. Their life was pretty solid until a new kid comes to Hometown and decides to mess with the norm.
(The story will primarily follow Clover and Chara with some silly side stories for Frisk, Asriel, and Kris)
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*You changed sans nickname to Sansational Skeleton*
"By the way, what's with my nickname being a pun? I thought you hated those?"
"I don't know what you're talking about, shortie."
This isn't the first fanfic I've written, but it's my first time posting. Please be nice to me.
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Noelle has known Kris all her life, but recently they have been getting more and more out of their shell, especially with Susie. Finding out that her shy, awkward neighbor has been throwing many house parties while Toriel is out of town, Noelle can't help but go; mainly trying to find any way she can get closer to Susie despite her mothers wishes, and out of morbid curiosity. How would a house party at Kris's be like? After all, how big of a party could it be?
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Kris discovers a world beneath the surface. One unlike anything they have ever seen. With it, they are given a suit of armor that grants them immeasurable power.
For their entire life they have felt useless. But with the armor, they didn't have to be Kris Dreemurr. They could be something else. Something more.
They could make a difference.
tl;dr - Kris becomes a superhero and fights crime in Hometown
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Nightmare was a curious spirit. He always asked questions, annoying the living daylights out of anybody who cared to listen. However, despite this being an annoyance, it was one of the main reasons Nightmare survived long enough to witness his failure as a Guardian of Negativity have its toll on the Multiverse.
He is failing. The balance is so out of whack that positivity is corrupt unless balanced out with negativity, turning toxic due to its stagnation in the Multiverse. Negativity is positivity's purifier, after all, and without it the positivity goes bad.
And Dream certainly isn't much help, what with him hell-bent on destroying any possibility of negativity naturally occurring.
Nightmare is losing hope, angry at himself for his inaction.
However, he forgets one thing: this is the Multiverse. And anything is possible.
Series
- Part 1 of dreamtemple
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What if the player never existed?
What if instead of Kris, Noelle fell into that dark fountain with Susie?
What if Kris has no association with the Knight and knows nothing of the dark worlds?
What if the soul that was desperately needed to seal fountains was Kris's and Kris's alone, yet the human is blissfully unaware of how desperately they are needed? Of the leadership fated for them?
...
Kris watched as Noelle walked out of the classroom with Susie, sighing softly.
Whatever. Honestly...they knew they should care more but...Susie never bullied Noelle anyway....
However...for some reason after that, Noelle and Susie completely disappeared for the rest of the fucking day!?!?! And for some goddamn reason when they came back Noelle is randomly seeking them out and Susie is acting weird as fuck, and they're somehow a lot closer??? And for another unknown goddamn reason Susie WILLINGLY asked to do their project.
What the fuck is going on??????
Whatever. They don't need to be a part of this bullshit. At least Berdly is just as confused as to what the hell is going on with their project partners.
Series
- Part 1 of Deltarune Fanfiction
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Dream is a King, King of Sunrise Eclipse. he's been a King for many months now. His parents having died shortly before his 18th birthday which he still grieves the loss of his parents. However the King of Midnight Fall Kingdom keeps attempting to peruse him. At first it started with letters, then meetings at their kingdom. And now this damn Nightmare is shoving flowers in his face asking for his hand in marriage
Little does Dream know this Nightmare was going to wage war on him the moment he denied.
And it appears Dream has bitten off more then he can chew.
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Some Krusie between canon-compliant and canon-divergent, that takes place right after Chapter 4.
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The biting wind whipped around Killer's skull, the black liquid weeping from his empty sockets stinging his cheekbones. Duty was a cold mistress, but a necessary one. He adjusted the magically conjured muscle in his chest, the artificial weight a constant reminder of the task at hand. Around him, Dust shifted, his shorter frame a blur of controlled movement as he scanned the desolate landscape. Horror, a hulking shadow against the grey sky, remained silent, his single eye scanning across the landscape.
"Anything?" Killer rasped,
Dust shook his head, his face turned away from Killer "Nothing but scrub and whispers."
Whispers of revolution.
Horror suddenly stiffened, his massive hand rising and pointing to a faint figure. He tilts his head, his skull creaking softly like a door being scratched at. "Down there."
Killer followed Horror's point. A thin plume of smoke curled against the horizon. It was becoming more visible the more he looked, A campsite. A potential breeding ground for rebellion. His empty sockets burned with a phantom fire. He tightened his grip on the hilt of his conjured blade in his pouch,
"Let's remind them what happens to traitors," Killer voiced. The hunt had begun.
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When monsters emerge from Mount Ebbot for the first time in centuries, the world panics—but it’s not an invasion. It’s a declaration.
Now the cursed Seven Mages, long scattered and broken by silence, are being called back together under government order to manage an “inter-species threat.” Among them is Damian Cael Warren—once the Mage of Justice, now a worn blade of his former self—who finds himself face to face with a talking skeleton who hides too much behind a grin.
Tensions rise. Memories surface. And nothing about the monsters’ arrival is what it seems.
The past never stayed buried. And neither did the truth.
OR
Monsters have returned. The Seven are called home. Damian isn’t ready for either.
Peace was never going to be simple.
Series
- Part 1 of Bound by Duty
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Upon falling into an Xtale timeline with no memory of how they got there or who they are, a human encounters someone they've selfshipped with for years. But, being foreign to this "perfect world," they're quickly hunted down and forced to clean up the mess they accidentally caused - no matter the cost to their life, love, or humanity.
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Where were they again? Oh yeah, inside of the, turns out, KING OF NEGATIVITY'S CASTLE.
And said king was explaining that they all were living there now, because CORE frisk(Whoever that was) didn't have a dark world in the OMEGA timeline?????How had Seam's life turned into this??????????
Roe couldn't 'feel' right now. Their SOUL had shifted into a circle, revealing that their SOUL type wasn't PERSEVERANCE, it was
DETERMINATION.
He would probably be pissed if he could feel right now.
SO I've had the thought of My fav Deltarune darkners being brought to Nightmare's castle for a while, so I finally have done it:)
Enjoy the chaos~
Series
- Part 1 of (You'll be)Sorry
- Language:
- English
- Words:
- 278
- Chapters:
- 1/?
- Hits:
- 6