1 - 20 of 50 Works in Twins Papyrus and Sans (Undertale)
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Skeletwins Sans' diary.
(Note: I HIGHLY recommend reading the main Skeletwins story before reading this fic. Spoilers for Snowdin Adventures with the Skeletwins ahead.)
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- Part 4 of Skeletwins Side Stories
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Just a bunch of silly, fluffy one-shots featuring Sans and Papyrus being their best brotherly selves.
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- Part 9 of Skeletwins Side Stories
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Snowdin Adventures with the Skeletwins by Just_AliAnne261
Fandoms: Undertale (Video Game)
25 Nov 2025
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"You want to know what to do here in Snowdin? Grillby's has food, and the library has information... If you're tired, you can take a nap at the inn. It's right next door - my sister owns it.
"And if you're bored, you can sit outside and watch those wacky skeletons do their thing. There's two of them... Brothers, I think. They just showed up one day and... asserted themselves. The town has gotten a lot more interesting since then."
The daily lives of wacky skeleton brothers Sans and Papyrus. Watch and read as they get into all sorts of wacky adventures, cause mayhem, and learn life lessons along the way!
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- Part 1 of Skeletwins
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What if the King Papyrus ending stuck?
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- Part 15 of Skeletwins Side Stories
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Papyrus wonders how he managed to last 19 years with a brother that seeks out any opportunity to ruin his day.
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- Part 13 of Skeletwins Side Stories
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Papyrus decides to take Sans, Toriel and Frisk on a car ride!
Unfortunately, the motion didn't settle well for Sans.
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- Part 16 of Skeletwins Side Stories
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Where Do Monster Souls Go When They Die? by Just_AliAnne261
Fandoms: Undertale (Video Game)
01 Nov 2025
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"Papyrus felt... strange. Softer. Lighter than ever before.
He could've sworn he was just in his bedroom a minute ago. He remembered his old, cold bones curled up under the sheets, his soul crying out with deep, painful loneliness. He's pretty sure he just fell asleep in that bed with tears running down his face.
He's never been the same since Sans passed away two years ago.
But now he's on a fluffy white cloud, high in the sky. At least, that's where he thinks he is."
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- Part 17 of Skeletwins Side Stories
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a·me·lio·rate
To make something bad or unsatisfactory betterPapyrus has been hiding his knowledge of the resets from everyone. Well, everyone but Flowey. ...that should probably change.
Flowey needs to heal, but doing so is made extremely difficult when no one trusts you or actually wants you there. Besides your only friend, I guess.
OR: Papyrus and Flowey are besties who needs to Improve Their Mental Health™. Everyone else has issues too, I guess, but still. This is Papyrus and Flowey-centric so who cares/jSeries
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Harriet Potter and the Lard Harem by Robroblue1
Fandoms: Harry Potter - J. K. Rowling, Harry Potter: Hogwarts Mystery (Video Game), Harry Potter: Magic Awakened (Video Game), Merlin (TV), Undertale (Video Game), Deltarune (Video Game), Hogwarts Legacy (Video Game)
17 Sep 2025
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Curiosity is weird. It can either be incredibly useful, or incredibly dangerous. Papyrus knows that all too well.
He knows his brother is smart. He's amazing at quantum physics! He's very good at gathering intel on people. And when Papyrus needs help, he knows he can always count on his brother to give him the best advice.
It's just that... sometimes...
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- Part 8 of Skeletwins Side Stories
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Gaster wants answers to his questions, regardless of the universe he’s in. (Even if he inadvertently caused those questions himself, intentionally or unintentionally…)
He’s been alone as long as he remembers and the only thing that could be a “clue” to his identity and hidden memories is a metal plate drilled into his right hand.
Or Gaster tries to find answers but everything goes worse for him.
Handplates! AU (reversal of roles)
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Exactly as the title says. Sans has a nightmare.
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- Part 12 of Skeletwins Side Stories
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A while ago, around... September, 2024. (Feels longer, lol) I posted a few chapters of a fic called Threeplates. I'm trying that AU again.
Comic Sans and Papyrus, and their sibling, Bodoni Ornaments, find a small human child and figure things out about themselves and the world.
EDIT: 10-17-25; I reread this and realized i did grillby's and fuku's voices wrong and it made everything fubar, i fixed it and made some tweaks.
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Having 1 HP isn't easy, as Sans can attest. Here's a bunch of instances where Sans gets hurt more than he should.
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- Part 2 of Not Skeletwins
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What Happens When The Fears Of Most Monsters Are Tested? Unidentified follows our protagonist: Jane Doe, An empty, pretty much emotionless dead teenage girl. As she lost everything about her old life, and is forced to start anew after “surviving” being beheaded.
ALL CHAPTERS WILL BE EDITED AS I WRITE IT TO FIX ANY MISTAKES ^^
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A couple stories showing different moments from W. D. Gaster and his sons' past. Giving the backstory of how Sans and Papyrus came to be, and of how Gaster sustained one of his more significant injuries—a situation that left more than just himself traumatized.
More scenarios to be written as the ideas come to me!
(Chapter One retcon coming on December 27th)
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- Part 1 of Freedom AU Spin-Offs
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Sometimes Frisk has to wonder, how on earth did Sans and Papyrus manage to live on their own as long as they did?
After the monsters were set free, Toriel, the skeleton brothers and Frisk all moved in together, creating their own little makeshift family. However, with great family comes great stupidity. At least, that's how Frisk would describe it.
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- Part 1 of Not Skeletwins
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Who needs to focus on the movie when you can focus on the joy your brother gives you?
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- Part 10 of Skeletwins Side Stories
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Platehands (NOT FINISHED EVER) by Sofxiel for AlizaCelemCentauri
Fandoms: Undertale (Video Game)
28 Jan 2025
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(I will not finish this. Check my rewrite in my account) The scientist W.D. Gaster has always been alone for as long as he could remember. He tries to find out what happened to his lost memory to no avail. Maybe it’s nothing, but… then why did his parents leave him? Especially with this weird plate stuck to his hand, what’s up with that?
Or Gaster loses memory, why is that? And what’s with that metal plate??
Handplates AU but reversed.
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Papyrus is the coolest. There's no doubt in Sans' mind.
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- Part 1 of Skeletwins Side Stories