1 - 20 of 50 Works in Alphys (Undertale) & Reader
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Summary
The barrier stood before you. Its white glow radiated throughout the expansive room, beckoning you forward, urging you to shatter it.
“Nah, I don’t think I will.”
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Or alternatively:
The reader decides the Underground is WAY better than the Surface and doesn't set the Monsters free. Cue shenanigans with Flowey. -
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Summary
Sans is the Bane Of Your Existence. Pranks and Puns haunt your days whenever he is near. Unfortunately, Papyrus is your best friend, and you'd do anything for him. Even if that means taking care of his brother after an experiment gone wrong turns him into a massive, and even lazier, house cat.
Series
- Part 1 of Turned Into An Animal (Sentence Prompts)
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Monsters have come to the surface, and with that a lot of probelms have been caused, so maybe a marriage between two people from the two races might help?
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As Monsters begin to live on the surface once again, you meet an eccentric group of monsters while volunteering. From sickness, health, and beach trips gone awry, you get to know the pretentious Dr. W.D. Gaster and co. Maybe he isn't as much of a prick as he lets on.
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Getting Thrown Into Your (My) Comfort Video Game by Ccaamm15
Fandoms: Undertale (Video Game)
01 Sep 2025
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There’s no other way to say this. One second you’re picking up your controller to play a game, and the next you’re in it! You’re in your comfort video game! You can befriend all those guys like you wished to!
There are definitely no consequences to doing what you want because this is all a game, right? You’ll eventually wake up from this dream and it all won’t matter.
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As Alphys' maid of honor, you want nothing more than her day to be absolutely perfect.
But the whole day, you can't seem to get Undyne's best man out of your mind.
It's absolutely ridiculous, you just met him!
But maybe, just maybe, you'll discover that the best part of the day isn't just watching a wedding, but meeting someone who feels like a perfect match.
With arms colliding and curiosities rising.
Series
- Part 2 of Papyrus One-Shots to Heal the Soul
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Hold on tight to this time, this place (‘cause everything you know will be erased) by Whitelotusesarentsopure
Fandoms: Undertale (Video Game)
27 Aug 2025
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Summary
“it’s dust.”
”….huh?”
“my name. it’s dust. now we aren’t strangers.”
“…Dust… as in..“
“yeah s’ exactly what you’re thinking. so quit askin’ me questions and shut up already.”
“You got blood all over my place. I just saved you from bleeding out. You could at least be nice.” You bit back, annoyed.
Eye lights glared at you in the dark.
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Or, the grouchy skeleton keeps coming back for some reason.
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Summary
You wake up as someone who has nothing left to lose, stranded in an Underground that's slowly dwindling in life. Despite being capable of crossing the barrier, you don't dare to, when you have a personal endeavor and promise in mind.
It's a different story when you're transported into an ideal alternate timeline, where your oath is rendered void. Here, with your various counterparts, you don't appreciate reliving the life of a prisoner-- especially when it's enforced by a reflection of what your Sans could've been.
(OR: In a pacifist timeline, an alternate Sans possessing a human soul appears, risking the newly established peace between humans and monsters. If Classic Sans had hair, he's pretty sure he'd still end up bald.)
[A Various x Sans!Reader fic.]
Series
- Part 1 of parallax error
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You're a simple person. You move quietly through life, taking classes and going home to enjoy your time as you please. You live near Mt. Ebott, and after the barrier's shattering monsters have slowly started surfacing into society and daily life. Although unaffected at first, perhaps it was stupid to think you could get by without ever interacting with monsters. On a morning that feels all too regular, you hurry ahead to class and run into a group of monsters. You pay it little mind, but that quick encounter would end up planting the seeds of great change.
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Alphys tries to play the matchmaker and sets up an almost blind date for you.
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Alex in the Undertale world by APJtheartist
Fandoms: Undertale (Video Game), Original Work
03 Apr 2025
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Series
- Part 6 of Extra of my serie with Travel with Alex the world creator, but these I didn’t end up using
- Language:
- English
- Words:
- 1,416
- Chapters:
- 2/?
- Hits:
- 33
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Summary
Having been born and raised in Ebott city, you’ve developed a passion for ocean-related things. Graduating from Ebott College for marine biology you love being near the ocean and helping out.
However, you haven’t gotten a chance to be hired for bigger jobs as you’ve settled for working at Ebott Aquarium, the 3rd largest Aquarium in America. You love your job and having worked at the aquarium for 2 years now, 3 including the internship, you're very vocal about saving animals especially sea animals dealing with pollution.So what happens if a water-loving person meets the monsters living in Mt. Ebott for centuries and what’ll happen when she meets a fire monster who loves the passion she has in her words and actions?
And what happens when she meets a skeleton monster who also loves how she voices her opinions?
I have no clue if this will have two love interests but I'll try! If not then I'll update this!
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Oops... by Pixel_Art_Teapot (Voissy)
Fandoms: どうぶつの森 | Animal Crossing Series, Undertale (Video Game)
23 Nov 2024
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You love Animal Crossing. When your friends got switches, you got them the game. However, you made them wait to start the game until you could all start it together. The night is a disaster, to say the least. But living out Animal Crossing WAS a dream of yours...
~~~Or~~~
You love the game. You are now in it.
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Morality by Huh_What_Nani
Fandoms: Undertale Yellow (Video Game), Undertale (Video Game), Undertale Yellow
12 Nov 2024
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You were happy to just spend time in the Wild East, something was almost always going on. The sheriff and his posse kept things interesting.
You didn’t anticipate that being forced into a new job would coincide with a budding relationship with your favorite sheriff, but you weren’t about to complain. So what if you had to keep a couple of secrets about your job?
Everything was fine until your job made you begin questioning your morality.
Series
- Part 1 of Mortality
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A particle physicist working in Ebott City is pulled into a project tasked with unravelling centuries of research to bridge the gap between human and monster science. As she delves deeper, she becomes entangled with an enigmatic entity that hides the desired explanations from her.
Driven by an insatiable need for answers, she fixates on one goal: to rip this 'man who speaks in hands' from the abyss, no matter the cost.
(Sorry!! I’m bad at writing summaries)
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You never wanted any of this. All you wanted was to chill at home, but the universe clearly had other plans.
Series
- Part 2 of Play Your Part
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Maybe it was a bad idea to move in with your sister's skeleton harem.
And to make such a deal that is obviously balanced in her favor.
But what does it really matter to you?
You have your son and that's all that matters.
(Enjoy a classic anti-harem as a morally questionable mother who is an absolute bad bitch)
Series
- Part 3 of Mama
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The Possession by Potatoes_are_cool
Fandoms: Undertale (Video Game), Deltarune (Video Game)
09 Jul 2024
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Summary
In the year 202X, a human child named Frisk freed the Underground and Monsters began their new lives on the Surface. It was rough at first as the humans protested, rioted, and made Monsters first few months back on the Surface a living hell, but when the National Government began placing laws to protect Monster life and freedoms, the cities became more accepting of the new change and began to give monsters a chance.
A decade later, the small mountain town called "Hometown," is still not so accepting of Monsters living in their town and would go to any length to fix it. Now, your once peaceful, quiet little town had been filled with blood, gore, and mass violence and it became clear that it was up to you to find out who was causing such atrocities and bring salvation to the poor souls who have been wrongfully damned to all eternity.
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This gaggle of wise-cracking skeletons keep popping up and acting like they know better. And boy, do you hate it when someone THINKS they know better than you. Your mum says you're a proactive control freak, but these skeleton should totally know better! They’re just begging for you to be spiteful at this point. Or just a little bit petty. Who knows why they keep inserting themselves in your life?
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Mettaton can’t understand why you, the newest celebrity in The Underground, hate him.
Series
- Part 1 of Play Your Part