1 - 20 of 2,973 Works in Papyrus/Sans (Undertale)
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This takes place in a post Underfell King Papyrus ending.
Struck by under population, King Papyrus makes it law that all monsters left alive by the murderous little human have to procreate. This leaves Fell!Sans and The King himself in a tight spot. There are no female skeletons left in the whole Underground and both skeletons are sure they are the last of their species. Fell!Sans proposes something. With the help of the first Royal Scientist's machine to travel to other universes, he will find mates for breeding purposes.
Tale!Sans is having his first sub heat as a female. This happens when there are only males left and the strongest one undergoes a gender swap. He knows this means Papyrus will have to be his mate.
That won't do. They are brothers, for the Angel's sake! So he does what he does best, HE RUNS.
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In which some begin their recovery, while others must watch as their world burns around them.
Pray that they can rise from the ashes.
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Warning: This is a sequel to an existing work and will not make sense unless you read that first. This series contains dark and disturbing content, in addition to fluff and more light-hearted moments. Chapters will be marked with trigger warnings as needed.
Here be monsters, and not all of them are nice. You've been warned.
Series
- Part 3 of Broken Bones Multiverse
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It's well past midnight, and Sans still hasn't contacted him. Papyrus, while searching every nook and cranny in Snowdin, makes another call, his phone rings once, twice, thrice… and nobody picks up. Just what in God's name could possibly be holding up his brother tonight, and why didn't he bother to tell him anything about it, after he had explicitly promised to…?
Then, to his surprise, a familiar golden corolla appears in front of him - but not for the reasons he'd hope.
"Papyrus! Hurry! Your brother's in big trouble!"
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It's been four months since the whole world tilted and spun out under Sans, dropping him into the snow in front of a very tall skeleton.
Four months, as it turns out, is a very long time.
Series
- Part 2 of no way off the hamster wheel
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With everything they have been together for the last few weeks, Nightmare agrees to let Luna and Honey go out to get supplies for the growing number of residents within the Castle.
Who could have known the dimension the deity sends them to is one that will have past lives clashing and major secrets finally revealed.
Series
- Part 5 of Kaleidoscope
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Rarepair New Year - i have a SNAKEing suspicion they're up to something by Anjel_X
Fandoms: Undertale (Video Game)
31 Jan 2026
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Slinky loved his Mates and what they could do to him, but what could a simple Lamia do to return the favor? At least Sans was happy to help come up with a plan on how they could pull a fast one on the two Fell.
Sans/Lamiatale Sans/Underfell Papyrus/Underfell Sans (Undertale) for Rarepair New Year 2026
Series
- Part 26 of Gyftmas, prompt and other BONEus events
- Part 7 of Rarepair New Year that's so RARE it's UNDERCOOKED
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Sans and Papyrus are both fused with two human souls and have been living in the Ruins with Toriel for as long as they can remember, but after many loses and unfinished business outside of the Ruins, Sans starts to feel discontent with himself…
- Language:
- English
- Words:
- 9,729
- Chapters:
- 4/?
- Hits:
- 26
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The Great and Terrible Papyrus, Captain of the Royal Guard, and Master Chef Connoisseur was not a man who found himself mingling with monster rabble very often. If he needed to squish a crime ring of lowly monsters to do his job, then he would with no hesitation. Or, if he needed to prove himself to other strong monsters, then a spear in the chest is much preferred over useless conversation. And yet he, the influential political figure that he was, was walking into one of New Home’s greasiest bars on a Friday night.
Little did he know that this would lead him to meet a familiar stranger.
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Someone yelled at him.
"SANS! WHAT HAPPENED TO THE HOUSE?!"
Part 1: Ch.1-40
Part 2: Ch. 41-?[On Hiatus]
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sans x papyrus x reader extreme smut (do not read if you do not like EXTREME EXTREME SMUT) by chargrmain_x
Fandoms: Undertale (Video Game)
17 Jan 2026
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you are the human, and you also happen to be sans' and papyrus' kitten baka. they are very horny today. oh also fontcest is canon sans and payrus kiss each other and say gex
the sex ensues -
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(This is an old comic)
Papyrus is a novice succubus and Sans is going to help him. -
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You died. Sans died. But in the void between life and death, you found each other, and a chance to live again.
Merged into one body with a dying child skeleton, you wake up in the middle of a brutal war between humans and monsters. With baby Papyrus to protect and your brother Gaster's experiments turning you into something more (and less) than human, survival means running, fighting, and holding onto whatever shreds of innocence you can preserve.Or: Isekai War AU where you get hit by Truck-kun, merge with Sans, become a child soldier, and eventually end up in a polyamorous found family with 14+ skeletons. Features: PTSD, creative use of green magic, so many puns, and the aggressive pursuit of a normal childhood for Papyrus.
no stripes or brother/brother are involved in romance.
Ask not for whom Truck-Kun honks, Truck-Kun honks for thee
This is entirely plotted out and outlined but will not have a set release schedule
The background is finally done! If you dont like war AU's you can officially skip to the middle of Chapter 10 and it becomes a 10 skeleton story.
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Red Bones (Uf!Sans) won a scholarship at the St. Wendell Ebott University, a secluded University in Maine, and goes abroad to study at the Tōkyō Rika Daigaku (Tokyo University of Science) to become a Bachelor of Science. With his late father’s last savings, he flies to Tokyo and takes residence there.
Sans Serif (Ut!Sans) is offered a position as a teacher at the prestigious Tokyo University of Science. Having won a Nobel Prize in Physics 20XX for his findings in quantum physics, studies of multiple alternate universes and The Void. He is ready to impart his wisdom to the masses as a part time professor.
What happens when these two collide?
Drama unfolds!
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The aftermath of terrible things can make a monster go crazy. How does one deal with it?
Wouldn't you want revenge?
Series
- Part 2 of The Kennel
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After going out to collect a debt Killer and Dust discover that their 'collateral' cleverly got switched. Now being on the Nightmare's gang radar Reader's life will be uncertain. Do they have the wit to survive? Or will they have to make a break for it and disappear?
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Violet has a certain professional curiosity about the way Edge conducts his affairs, and that interest is returned. So, the two of them (and their brothers) enjoy a little research vacation.
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In a world where monsters are long since forgotten, their existence in mere remnants of stories and tales of daemons and Hellish realms residing just beneath our feet, time has slowed, trapping the species in a sheet of darkness. Their culture—once flourishing with music and earthly delights, changed nearly overnight when a human brought down the beauties and horrors of religion from the surface, and nothing may ever be the same again.
Two skeletal brothers, the sons of a respected priest, must face the challenges of life under the thumb of their father's perfectionist expectations, and the rule of a Christofascist monarch. Fate may test them, but will they run from it, or will they embrace it with open arms?
Welcome to Swapfell Unholy
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On his twenty-third birthday, Prince Edge is given a gift: a courtier to begin his royal harem, hand-selected by his father.
Trouble is, Edge never really wanted a harem.
Series
- Part 2 of One More Love
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(A revised fic I wasn't happy with)
After a battle gone wrong a few of our favorite skeletons find themselves in a seemingly desolate AU. As they navigate through they meet a few of the locals who assist them to the City where they can find help and a possible way home. But the way home seems to be more of a problem than anticipated...
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⭐️Ground Hog Mole's Fanart Book⭐️ by GroundHogMole
Fandoms: Spider-Man: Spider-Verse (Sony Animated Movies), Undertale (Video Game), Deltarune (Video Game)
26 Dec 2025
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Hi :)
I've read a lot of cool fanfictions on this website and drew/promised to draw fanart for a lot of them, but since I deleted twitter I couldn't post them anywhere so, since I already post fanart on my own fanfics, I thought why not just make a work to highlight beautiful works I've read by post art of them?
Credits will be given to all the authors and only people who authorized me drawing fanart of their fics will be featured here. If you like the art I made of these stories why not read the actual fanfic too? *wink wink*
It's literally JUST art.
Ps.: I've added the warnings and tags to the notes on the chapters whose fanfic/art contain them, that way you can skip any that make you uncomfortable.
Also if you know the fic I drew fanart for and are just looking for that specific drawing the chapter title will have the same name of the fics the art is inspired by.