21 - 40 of 3,582 Works in Reader Is Not Frisk (Undertale)
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Bedside Manners and Guns by absurdmagewrites
Fandoms: Undertale (Video Game), Mafiafell - Fandom
14 Dec 2025
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Summary
You were a simple med student until the night you found a monster bleeding out against the side of your apartment building. Following your oath to first do no harm despite not being a doctor yet, you take him in and try to care for his wounds. Little did you know he was a member of the Serif Family Mafia and to makes matters worse...
He was the one in charge.
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"I'd Rather Do Normal "People" Things...Thanks!" by Cr8ter_Eight
Fandoms: Undertale (Video Game)
14 Dec 2025
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You are a Normal Person in pretty boring world.
You wake up.
Brush your teeth.
Comb your hair.
The same repetitive, insigniFi6@^t- th!^g every $ingle day....
One day, you do the same thing.
On that same day, you don't notice that an Insanely huge skeleton has tumbled out of your closet.Amazing.
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An octopus is calling you “Moonbeam”, go figure. by Vin_cant_sea
Fandoms: Undertale (Video Game), Five Nights at Freddy's
14 Dec 2025
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Reader is a time-traveler, a universe-hopper, whatever you want to say. They often wake up with a need to explore consuming them, so they do what they do best, go off into random universes and multiverse, and well, fuck around. Problem is: now they’ve caught the eye of a certain God, who looks a bit too much like a slime covered octopus for you to take them seriously. Said octopus has decided that they’ll die before they let you out of sight and is now chasing you through the multiverse.
Basically: You’re a literal chaos incarnation, and you’ve caught Nightmare’s eye. We don’t know if he wants you dead, or if he just wants you—but you fucked around, and now you’ll probably find out.
Series
- Part 1 of Universe-hopping
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Monsters have appeared from a mountain, in your town! Interested in this new development you head home with high hopes. Sadly it seems humans will be humans, and for some reason you keep getting caught in the cross fire. Luckily you've made some new friends to help you out along the way!
You were just about to head into the nearby town when your phone went off, it was a text. From Otto of all people. A video of him, and what looked like monsters walking behind him. "You should come home (Y/n), things just got interesting."
Reader is female (sorry) there will be smut at some point, don't know when though...
Series
- Part 1 of Blood N Bones Stuff
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You wake up in an empty room, you can't remember who you are or how you end up here, all you know is that you need to leave this place. Your first encounter being a pair of skeleton brothers that seem both too nice and scary, you wonder what's the deal with this place but does it really matter? the place is full of strange creatures, what would you do?
There's no place for someone like you in a place like this.
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You are a ranger stationed at the far left of the City, right under Mt. Ebott. This then makes you responsible to its wildlife… and technically helping in touring some hikers. When you woke up early to catch a sunrise, you are met with a blinding light, followed with a sound of shattered glass...
- Language:
- English
- Words:
- 2,205
- Chapters:
- 1/?
- Hits:
- 9
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Summary
The Underground is no place for children.
Toriel rules with cruelty and caprice, Asgore kills in the name of mercy, and Sans and Papyrus enforce the Queen’s will with bloodied hands. Every human who has fallen before has been slaughtered.
But when a silent, nonverbal child falls into this world, something shifts. Spared by Toriel on a whim, caught between Sans’s suffocating loyalty and Papyrus’s cold protection, they must learn to survive without words in a kingdom built on violence.
This is not a story of heroes or redemption. It is a story of survival, miscommunication, and the fragile bonds that grow in the darkest places. -
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Sometime in early October, a few years after monsters have come to the surface you move in with your friend, and used to be coworker, Sans. You’ve been through quite a bit together but even still there are secrets you won’t share. It’s only a matter of time till those feeling bubble to the surface.
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“w h y d i d h e m a k e y o u?” blue surrounds your soul, flinging you up in the air and hovering you above his face. You whimper when his power tightens around your little red heart. “w h y g i v e y o u t o m e a n d t h e n l e a v e?”
“I don’t know.” you whisper.
He slams you against the floor repeatedly until your soul cracks.
You RESET and he does it again. He asks you the same questions. He summons sharp bone attacks around your room and stabs you repeatedly, kills you again and again–
You RESET.
You’re in his arms. He trembles as he buries his face on your hair, bluish liquid leaking from his sockets.
“I’m sorry,” he says.
“It’s okay.” you tell him.
You two stayed like that until Blue and Ink found you, their panic loud, worry suffocating.
Your relationship with Classic was Complicated with a capital C.
But you love him and he loves you.
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Sword experience with having CEO as his boss by silly_dewdrop
Fandoms: Multi-Fandom, PHIGHTING! (Roblox), Bee Swarm Simulator (Roblox), Battle For Dream Island (Web Series), Wings of Fire - Tui T. Sutherland, にゃんこポータル | The Battle Cats (Video Game), Find The Markers, Frozen Soul [DG] (Roblox), Undertale (Video Game), Block Tales (Roblox), Alien Stage (Web Series), Creatures Of Sonaria (Roblox), Unstable Universe (Web Series)
12 Dec 2025
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Sword’s new life goes amazing without any complications whatsoever, until his boss forms a relationship with y/n….
DISCALIMER: I DO NOT KNOW HOW MAFIAS WORK but like I don’t really give a frick cuz it’s a well… crackfic…
Series
- Part 5 of Dewdrop’s mentally deranged crackfics
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What happens when the Gaster Gang handle a human child situation? Read and find out! Based from Bun-bunmuse art story.
ps. the reader is 5 year old girl ?
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Wake up buried in snow, alone, and with no memories?
Check.Keep seeing numbers, words, and random text floating around every object and surface as far as the eye can see?
Also check.Why does every person he meets say he needs help?!
He’s perfectly fine, if you ask him.“I wonder what determination tastes like.”
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Note from the author:
This is my take on Fatal Error — a much more non-canon,[this isn’t even OOC, this is just straight-up a different person with the same name]
amnesiac version of him.
He’s also not fully canon-compliant in terms of power scaling and may even have a different origin and and backstory.It’s my reimagining of him with a completly diffrent story.
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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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You honestly can't remember when you had officially moved into the lodge to be with your datemate. It started as leaving things in his room under the (flimsy) excuse of having stuff for the next time you have an impromptu sleepover—but it was a not-so-subtle takeover.
The others didn't mind it either and were gracious enough to provide you with your own room for when everyone's shenanigans prove to be too much for you, but little did they know that they practically invited the devil herself into their home, because you're the queen of starting some bullshit or doing things for the bit.
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You’ve been living your life content but lonely. Until one day you were introduced to a whole new world of bitties! Especially the more newer skeleton variety.
There’s grumpy ones.
There’s lazy ones.
There’s even ones inspired throughout multiple multiverses!
An adventure of cuteness awaits you in the form of little skeletal creatures. Get ready dear Reader, for it will be a chaotic and fun ride.
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You are a passionate artist who’s struggling with sketching the pelvic bone, lucky for you, Edge is more than willing to give you some help and… his virginity?
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December 9th - "Where did all of this mistletoe come from?" by kitkat_fic13
Fandoms: Undertale (Video Game), Deltarune (Video Game)
09 Dec 2025
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Prompt 10: "Where did all of this mistletoe come from?"
Sans is using his telekinesis to repeatedly teleport mistletoe above the two of you. (˶˃ ᵕ ˂˶)
I don't care if this isn't how it works TvT, it's the only way I could think of making this prompt work...
Plot: pacifist run, but for some reason the monsters haven't left the Underground yet. Listen, I didn't think this far ahead...
Sorry if it's ooc!
DISCLAIMER: These prompts are from a tumblr prompt list linked here.
Series
- Part 9 of 25 Days of Christmas 2025
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They say life is full of surprises, but [Name] never expected to end up in an entirely different universe, one filled with monsters, souls, and magic. But this isn’t some happy fairytale; it’s reality. And reality bites.
Adapting to this strange new universe feels impossible, especially when the skeletal monsters causing you trouble also happen to be your roommates. And 'passive-aggressive' doesn’t even begin to cover it. Still, no matter how lost or out of place you feel, you refuse to let go of hope.
After all, if life can surprise you once... who’s to say it won’t surprise you again?
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So you got woken up in the middle of the night by your new neighbors... no biggie! You're sure they're just excited to be in a new (cheap) apartment. So you decide to introduce yourself to them when they get settled in.
But to your surprise, your new neighbor just so happens to be a skeleton!
"Oh!" You say, surprised by your neighbor's appearance, "Uh hey! Welcome to the unit, I'm your neighbor"
"oh! hey i'm sans" He smiles, lazily copying your initial reaction.You hold your hand out to shake, he looks at your hand for a moment before accepting it.
when all of a sudden...
PPPPPPRRRT!
Was that a... whoopie cushion in his hand?
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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.