1 - 20 of 186 Works in Alternate Universe - Mafiafell (Undertale)
Navigation
Listing Works
-
Bedside Manners and Guns by absurdmagewrites
Fandoms: Undertale (Video Game), Mafiafell - Fandom
20 Jul 2025
Tags
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.
-
Tags
Summary
After drowning as a human, Ashe reawakens as a DustTale variant of Sans. With his ghost Papy helping keep him from falling into suicide a second time, Ashe slowly learns he can have fun, and what's more fun than fucking with the Star Sanses who have totally mistaken him for the 'evil' Dust Sans?
Edit: Story is still ongoing!!!
-
Tags
Summary
Mafia家族强强夫夫档，F4全员恶人注意
- Language:
- 中文-普通话 國語
- Words:
- 10,163
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 14
-
Whitecoat by bambibeee
Fandoms: Undertale (Video Game), Mafiafell - Fandom, Mafiatale - Fandom
14 Jul 2025
Tags
Summary
In a city where monsters rule and humans disappear, you keep your head down and your scalpel sharp. They call you Freya. The cartel’s private doctor. Human. Untouchable. Employed for reasons you can’t remember, protected by monsters you don’t trust. But memories never stay buried forever.
“there’s no basement, dollface,” Sans says.
But the ground is humming. And you’ve learned to stop trusting.
────୨ৎ────
-
Tags
Summary
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.
-
Tags
Summary
A monster mobsters by the name of Sans is a feared ruthless leader and hes right in the bar you worked at as the skeleton waited he had eyes on you as you walked over.
You work as a waiter in a somewhat upper class bar. which was horrible depending on how many rich men come in, and outside was horrible too, all those signs for monsters to leave, homeless people begging for money or alcohol, death everywhere in the city you lived in and the Mafia....
-
The House Next Door by BattleMaiden13
Fandoms: Undertale (Video Game), Underfell - Fandom, Underswap - Fandom, Swapfell - Fandom, Mafiatale - Fandom, Mafiafell - Fandom, Mafiaswap - Fandom
10 Jul 2025
Tags
Summary
The first time you met monsters you manage to run into four of them and literally run into one of those four. Now they are apparently moving in next door with their siblings and you can't seem to imagine a life without monsters. On the plus side they tell horrible jokes and have endless amounts of energy. So what could possibly go wrong.
Part 1) Chapters 1-138
Part 2) Chapters 139 - ??? -
Bewitched, Bothered, and Bewildered by CrimsonAndCloverOverAndOver
Fandoms: Undertale (Video Game), Mafiafell - Fandom
08 Jul 2025
Tags
Summary
Cherry Sweet is a rather unconventional performer at a club like 'The Velvet Crop' with her thick thighs and plush stomach, but she does well enough for herself. The patrons enjoy a bit of variety, but what will she do when she attracts the attention of a monster--and a mob boss monster at that?
Featuring a 1920's vibe with music from the 20's-60's, a meet-not-so-cute developing into a partnership, and a spitfire, plus-sized FMC. I hope you all enjoy!
-
Tags
Summary
Freddy is a bartender, as well as his good friend Patrick. Unfortunately, Patrick's mam is sick, so he needs someone to take over his swing shifts. Who else but Freddy to step up to the plate?
...Who exactly is he serving?
A one-shot, and a scenario I just thought of randomly. I love Mafiafell. Maybe I'll continue this with a proper plot. Eh.
-
Tags
Summary
A tap of his foot. A barely held back growl. Nothing works to distract his worsening mood. This Gala only stands to worsen his addling mind. A retreat to the roof, perhaps, and a much-needed cigar break might do the trick. Yet. the dance of the stars only reminds Sans of what he misses.
-
Tags
Summary
A truce between two powerful mafia families. One contract. Two unwilling signatures.
Sans Gaster never thought he'd be the type to get married—especially not to some brat signed off like cargo to settle a blood-stained deal. But when his brother, Wingdings, forces his hand in the name of power and peace, Sans finds himself betrothed to a porcelain doll with a mouth sharp enough to stab.
Yoru Felidae is nineteen, furious, and absolutely done with everyone’s shit. Forced into a dress, a role, and a marriage she never asked for, she refuses to go down without a fight—even if her new husband looks like he eats bullets for breakfast and talks like every sentence ends in a threat.
Their first meeting? A disaster. Their families? Watching. The clause? Bear one child—and the contract is over.
But nothing’s ever that simple.
As loyalties blur and tempers flare, Sans and Yoru must navigate the minefield of violence, politics, and buried trauma that binds their two families. And somewhere between hatred and survival… something unexpected might start to grow.
She’s a doll made of rage. He’s a devil in a suit.
And neither of them are ready for what comes next.
-
ArcaneFell: Under His Protection by Witch_of_Ragnarok
Fandoms: Undertale (Video Game), Mafiafell - Fandom, ArcaneFell
03 Jun 2025
Tags
Summary
ArcaneFell is a Mafiafell fanfic set in the brutal, pre-industrial underworld of the 1860s. When Sheriff Marrow finds a wounded human slave in the snow, his quiet world of law and loyalty begins to fracture. He names her Garnet. She becomes his reason to question everything. Bound by silence and shaped by survival, their growing bond defies a world built on obedience and blood. As Garnet’s lost magic resurfaces, she becomes both weapon and witness to the dark games of Don Gaster. In ArcaneFell, protection is power—and love may be the deadliest risk of all.
Series
- Part 2 of ArcaneFell
-
Tags
Summary
A girl and a skeleton meet in an alley andddd... What you wanna joke? There ain't no joke look! Look! I'm not lying just read it you'll see!
-
Tags
Summary
A reckless man with nowhere to go finds solace in his obsession with a nun who's been tasked with looking after him.
Series
- Part 1 of Angsty Sans/Reader One Shots
-
Tags
Summary
The daughter of a politician and a successfully business man being kidnaped and held for ransom was something you only heard about in stories, rare true crime specials that didn't happen to regular people. Until it happened to you.
Now in the middle of a blind panic your father has purchased several Monsters to make sure it doesn't happen again, using what might have been shady business dealings to get special permissions for them. You never asked about how your dad had so much money, or how he was always able to pull so many strings, but maybe you really should have. -
Tags
Summary
Bangchan queria se esconder. Hyunjin queria sentir
No Velvet Mirage, onde as paredes contam segredos que a boca jamais ousaria, eles se encontram
Um quer ser detido
Um quer ser destruído
Juntos... talvez só soubessem dançar -
ArcaneFell: Prologue by Witch_of_Ragnarok
Fandoms: Undertale (Video Game), Mafiafell - Fandom, ArcaneFell
24 May 2025
Tags
Summary
Summary:
The prologue is a short story that offers a first glimpse into the world of ArcaneFell.
Meet the Rookie—a young feline grunt trying to survive his first day in the mafia, working under the looming shadow of Don Gaster. Assigned to accompany Stonehand, a battle-hardened beetle monster with a long history in the black market, the Rookie is thrown into the depths of Dreamland City's criminal underworld.
Their mission: infiltrate the Golden Vault—the country's most notorious underground auction house—and secure a high-value item, no matter the cost.
But what begins as a simple assignment soon spirals into something much darker.
For the Rookie, this isn't just about bidding wars or underworld politics. It's a brutal lesson in what it truly means to serve the Family—where loyalty is a weapon, betrayal has a price, and one wrong move could get you buried beneath the marble.Series
- Part 1 of ArcaneFell
- Language:
- English
- Words:
- 3,037
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 8
-
Tags
Summary
What if I told you.. I wouldn't wait?
That I would cross this prison of flesh and come running to you?
-
Tags
Summary
Reader can't pay rent on her own.
Mentally beating herself up for renting such a big house, she put out an ad for roommates. Guess who shows up at her door?
Unfortunately, or fortunately for you, mafiafell has been my most recent obsession. Sooo, have fun <3
Tags will go into more detail eventually, i the sorry
-
Empire business [frisk/chara X male reader (mob tale/ mafia fell)] by Apostasy_Films
Fandoms: Undertale (Video Game)
13 May 2025
Tags
Summary
A cruel city that’s eats the weak and empowers the strong, where people fight tooth and nail for a chance to take it all, one boy stands at the top of new underground city, (Y/N)