1 - 20 of 122 Works in Alternate Universe - Mobfell (Undertale)
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Here is a place where some of my other works, or Undertale short story blips, will make their way into the world. Some have the potential to become full stories if liked enough.
It is time some of these were shared.
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When life gives you a gun, you're gonna shoot. by Quinme
Fandoms: Undertale (Video Game)
12 Nov 2025
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One moment you were on the call with your friend, the next you are in a shady dark alley, pressed by... a crocodile with fedora?
Life is confusing, and you have no damn idea where you even are and what will come next.
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Sticks and stones may break my bones, but words shall never hurt me
— Unknown (first written appearance, 1830)Crime prevails. In every street, in every corner, every twisted apparition of kindness has a perception of to gain and to lose. Quid pro quo taken to its natural eventual conclusion.
Mercy is not an option in this world. And yet, there lies a soul DETERMINED to do something right, and another begging for a release that will never come.
Unlikely souls meet in the beyond, and take a journey to discover what went wrong, and how did it all go bad so quickly?
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- Part 1 of sticks, stones & bones
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You never thought you would move to New Ebott, but after learning more than you should have, it was the only city where you could hide it.
It was the city where monsters and humans lived side by side, where both could be mobsters, thieves, dealers, or saints. Sometimes all in the same breath. New Ebott didn’t ask questions, though. It didn’t care who you were, just what you brought to the table, or what you could pay to keep off of it.
Of course, you had plans to stay out of trouble. That was until you met a golden tooth skeleton who won't leave you alone.
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Written in journal entry format with occasional 1st person present writing.
≫ ──── ««•◦ ✪ ◦•»» ──── ≪
Taken from home, [y/n] is trapped in an underground lab with no memory of who they once were. Left with nothing but a semblance of sanity, they begin to make journal entries.
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- Part 2 of Undertale Stories
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Frisk, a human girl trapped in a dangerous underground black market operation run by the morally corrupt Sans. Forced into delivering black market goods for Sans while wearing a collar that tracks her, Frisk is torn between her growing curiosity and fear of him. Will their budding romance survive the harsh world of the underground? Will Sans turn her in to ASGORE to save his brother?
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When the rain came pouring down and he turned his back on a second chance at living, Sans knew he was done for.
This was it.
He knew he would turn to dust right in front of the convent he had been eyeing since he was left without a home or anything else to his name.
Then came a nun, reaching a hand out and offering him the mercy he longed for since the moment he stepped away from an easy life.
Now, Sans is determined to make the nun who gave him another chance at life feel as good as she makes him feel.
He wants a life alongside her.
The problem is convincing her out of her reluctance that he's worth the risk of leaving a life of faith behind.
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Un Nuevo Ga-n-ster En La Ciudad by Duncan_G_Oscuridad_09
Fandoms: Undertale (Video Game)
08 Jul 2025
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Cuando Sans tiene un mal día el universo le recuerda, a diario, que siempre puede empeorar; especialmente cuando un niño humano aburrido tiene la capacidad de controlar el espacio tiempo. Sans esta solo -mientras sus viejos amigos están ocupados viviendo sus vidas por 2456 vez, incluyendo a su hermano que pasa la mayor parte del tiempo fuera de la casa-, nada nuevo. Buscando formas para mantenerse cuerdo en el bucle infinito que es su vida a causa del niño humano y la flor decide hacer una parada recreativa en el metro, más específicamente al único lugar donde la determinación del niño no puede afectar, el laboratorio escondido en lo más profundo de las entrañas de True Lab. Claro que mientras esta la maquina falla, y envía a Sans a. alguna parte.
Ahora atrapado en una Realidad alterna con todos sus conocidos como Mafiosos; Sans debe encontrar un camino de regreso a casa evadiendo a la policía corrupta, los metiches, las peleas de pandillas, las mujeres locas y un trio de hermanos muy interesados en conocer al nuevo esqueleto en la ciudad.. Y no como te imaginas. Menciono que también está adoptando niños? Y no, no está remplazando a su hermano,-ni está pasando por el síndrome del nido vació. Quien te crees!?-Series
- Part 1 of Sans Vs MobFell
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A reckless man with nowhere to go finds solace in his obsession with a nun who's been tasked with looking after him.
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- Part 1 of Angsty Sans/Reader One Shots
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A determined detective wants to get rid of the mafia that has been infesting her city for decades.
She goes undercover as a waitress in a restaurant where mobsters tend to gather and there, she meets Red, the only monster involved with the mafia she's ever met.
She starts befriending him, to the point of actually getting worried about his well being if she were to take action against his group. -
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You have more than a few bad habits you can't seem to kick and all those bad habits seem to lead you straight to them. They don't seem to mind one bit though.
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You’re running from two things: a family that smothers you like bad leftovers and a psycho ex who’s probably one restraining order away from a fucking Netflix documentary. Desperate for cash and distance, you land a job that seems too good to be true: free room, free board, and great pay. The catch? You’ll be working for a family of literal skeletons.
Papyrus is strict as fuck, but it’s still manageable. But then there’s Sans—his lazy, smug brother with a grin that screams trouble. He’s constantly invading your space, dropping cryptic one-liners, and making “dollface” sound more like a warning than a compliment. Now, you’re stuck wondering if this gig is your big break or just another shitstorm wrapped in a paycheck.
Wrote this dumpster at 3 a.m., powered by bad decisions and caffeine. I’m tired, cranky, and seriously considering why Sans is basically the human embodiment of my last bad date. Time to sleep (or cry). Goodnight! <3
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Beauty and the Big Bad Beast (REMASTERED) by bones_of_sabbath
Fandoms: Undertale (Video Game)
01 Jan 2025
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New York City is crawling with monsters and mobsters- protection keeps going up and the violence never seems to end. Elizabeth Russo is a burlesque dancer just trying to get paid and stay afloat when one night, The Jenny Bar gets shot up. In the midst of the chaos, Eliza finds herself at the mercy of a certain red eyed skeleton. He's rude, perverted, aggressive, and a massive jerk...but what if there's another side to him?
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All about Us [Mafiafell Sans x Original Character Oneshots] by yashachan
Fandoms: Undertale (Video Game)
22 Dec 2024
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This is a one-shot fanfiction featuring Mafiafell Sans and my original character, Yoru Felidae—or more accurately, a self-insert version of myself. I couldn’t resist the urge to create a story about him and me because I absolutely FUCK with this character.
While Yoru might not be a relatable character for everyone, as her specific body type, skin color, eye color, and hairstyle are detailed in the story, I hope you’ll still enjoy reading it. I wrote this purely for fun, but having someone else read it would mean so much to me.
Thank you, and happy reading!
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Frisk sang for a living. She sang in clubs that were populated by mobsters, murderers and the most violent criminals her city had to offer. She honestly thought things couldn't get any worse until corruption in the form of a grinning skeleton came strolling into her life. His name: Sans.
She tried to run, but no matter where she went he was always waiting for her.
Chapter 34 finally up!
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Last year, I wrote a story that should have been about bitties. It accidentally became far less bitty-centric than originally advertised. THIS story will not be! THIS story is a continuation of the A Bitty Escape and One Last Try story, focused on the lives of the bitties after the events of ABE and OLT.
New relationships are discovered. Old relationships are strengthened. Animal shelters are worked at. Family life and fluff are everywhere.
This takes place between One Last Try and the ending of Out of the Void. If you haven't read the other stories in this series, this one probably won't make much sense, but hey! Don't let me stop you from living your life. Get on in here! See if you can love these guys with absolutely no background knowledge. Could be fun?
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- Part 4 of Little Bits
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It's always been your dream to own a cosy clothing store filled with merchandise of your own making.
Fortunately, when monsters make their return to the Surface, that dream turns into a reality: you're tasked with designing clothes fit for their specific needs.
Fireproof clothing for flame monsters, for example, become the hottest, most sought after purchase, and clothing with holes for ears and tails are the next best-selling items.
But when the task grows too much to bear, you have to rely on the person who made this dream possible: the skeleton man who knocked on your window on a rainy Saturday night, pleading you to help him fix a suit for an important meeting.
He’s been with you through thick and thin, helping you keep your business running, and keeping an eye out for snitches, so relying on him again can't be all bad… Can't it?
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All you wanted in life was money, enough money to escape the city, but your kind heart kept you there to help others.
You are a doctor like any other, who one day in the emergency room saved the life of Sans' brother, only to become his pet and personal doctor.
*MafiaFell is the property of its respective owners.
* UnderTale is the property of Toby Fox. -
Above all, love each other deeply, because... by Bubbleteasing
Fandoms: Undertale (Video Game)
14 Aug 2024
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A nun and a monster encounter eachother in a dark alley... You kinda know where this story is going, so I might as well save it.
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- Part 2 of Poor little nun
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It’s Halloween! You and your degenerate friends crash a private party and pick up a new pal.