21 - 40 of 39,672 Works in Sans (Undertale)
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Dream finally found a way to burn the corruption from his brother's body.
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Noriko works for the Ebott police department in the newly established special bitty unit, her first assignment to go undercover to get into the bitty fighting rings now that the government has given the small monsters all the same rights as their full sized counterparts. What she didn't expect was for her first assignment to have a hiccup in the form of finding something unexpected in an ally on her way to make contact with her in into the rings.
Life in the rings was hell, being sold off to be a breeder was probably even worse. Though dusting in some filthy ally by the jaws of a mangy mutt was not the way he expected his great escape from hell to end.
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Life is like a slice of Pizza; meant to be shared with someone you love
As both Asriel and Pizzapants (Burgerpants counterpart for Deltarune) develop their relationship, they find themselves in many comedic and heartfelt situations. Follow as they go through their mundane lives in this slice of life story.
- Language:
- English
- Words:
- 7,771
- Chapters:
- 1/1
- Collections:
- 1
- Hits:
- 22
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Literally just a bunch of stories with Sans AUs centering around the Reader Insert. I'm still trying to figure out how to post on here so give me grace.
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A seventh human falls into the Underground, but it isn't Frisk...
Erika finds herself in the world of the Underground, where she meets the spirit of Chara, which she shares a surprising amount in common with despite the strange circumstances. Erika then begins her long journey to return home, though she begins to wonder if she even wants to return home.
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All that Ink knew was that one day, his dull reality of serving macchiatos and dealing with rude customers was changed forever when one particularly handsome skeleton entered his life and turned his world upside down, enchanting him with feelings he had never felt before. Does it really matter if Ink can't remember exactly how they first met? First meetings aren't always as memorable as romance books will have you believe.
After sneaking glances at him for months, Ink's feelings are suddenly reciprocated when Error asks him out on a date. What does someone do on a first date? Especially one who has never even so much as had a crush before? And what does one do when one's own... personal fantasies... keep invading their brain and confusing daydreams for reality?
Oh well, it'll be fine. Everyone gets first date jitters, don't they?
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The Doctor's Descent by Feanyx1
Fandoms: Undertale (Video Game), Doctor Who (2005), Doctor Who
18 Jun 2025
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He thought that the radiation would kill him. He thought that his time as the Doctor would come to sad and brutal end. He was wrong. And that was so much worse.
In his efforts to find himself, and without his companions, he accidentally stumbles onto a monstrous civilization miles below the Earth. With his newfound DETERMINATION and some new allies, he'll come to realize what it truly means to be a friend, and learn how to live his last lives with his head held high.
And make sure that, just this once, everybody lives.
OR
Undertale but the Tenth Doctor replaces Frisk. Fluff, angst, and time shenanigans ensue.
*No knowledge of Undertale or Doctor Who is required, though it is helpful if you've experienced at least one of them.
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algo parecido a la paz / killerdust - dustkiller by XxMeow_69xX
Fandoms: Undertale (Video Game)
18 Jun 2025
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An outlier from outside ( horror tale) by ligmaballz69
Fandoms: OMORI (Video Game), Undertale (Video Game)
18 Jun 2025
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Sunny ran out of his home due to a certain accident
He didn't intend for things to come to this
He ran to the lake, but because it was pitch black outside, he got lost in the woods only to end up on the cliff inside a mountain.
He was still thinking it was a nightmare so he jumped so he could wake up in the arms of Mari calming him down like any bad realistic dream
He always had
Unfortunately, it was the beginning of his worst nightmaresBtw English is not my first language
I should clear that out again after ehs -
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Summary
Waking up in an empty underground with no memories other then common sense: Check
Constantly seeing numbers all around you, not knowing how to get rid of them: Check
Looking Like a computer crash in real life: Check
Who the Hell did I piss of to get like this
[ Sorry I have no idea how to do summaries, But this is my take on Fatal Error, he is a lot more Out Of Character then compared to canon and he has a different backstory then his canon counter part.] -
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Something went wrong with the soulless pacifist timeline and now Frisk finds themselves here without knowing what should be happening.
There's are some strange things going on and Frisk is determined to find out even if it means going with their own curiosity.
- Language:
- English
- Words:
- 190
- Chapters:
- 1/?
- Hits:
- 7
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After Subject 2 asks about his digital records, Dr. W.D. Gaster comes up with a new way to keep his experiments entertained.
OR.
The story of Handplates, as told through 2-P's little notebook.
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Ship Children asks and dares by iamauthor979
Fandoms: Murder Drones (Web Series), The Amazing Digital Circus (Web Series), Undertale (Video Game)
18 Jun 2025
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A fic where you can ask any of my ship kids questions and dare them to do things. 100% SFW because every ship kid's a minor.
If you're here for the Undertale AU, skip to Chapter 31.
Series
- Part 3 of My TADC Ship Children and their Journey
- Part 1 of Ace's life story (Nuzi ship kid)
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Multiversal Hub by Pumpk1nnie
Fandoms: Multi-Fandom, Doki Doki Literature Club! (Visual Novel), Chainsaw Man (Manga), Invincible (Cartoon 2021), Vocaloid, 呪術廻戦 | Jujutsu Kaisen (Manga), 文豪ストレイドッグス | Bungou Stray Dogs, OMORI (Video Game), Dandy's World (Roblox), Spider-Man (Comicverse), Undertale (Video Game), Sonic the Hedgehog - All Media Types, 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), EPIC - Jorge Rivera-Herrans (Albums), ENA - Joel G (Web Series), Ouran High School Host Club - All Media Types, Heathers: The Musical - Murphy & O'Keefe, 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K., In Stars And Time (Video Game)
18 Jun 2025
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The Multiversal Hub is a massive hotel floating in the void, a quiet, neutral space where characters from across all fandoms cross paths. Some find a strange portal tucked away in their world. Others are invited by a red-eyed host named David, who manages the whole place like it’s just another Tuesday. The Hub isn’t about battles or saving the world. It’s about what happens when those characters aren’t fighting for their lives. Training in the plaza, sharing meals in the kitchen, awkward run-ins in the hallways, unexpected friendships, movie nights that spiral into chaos—just slice-of-life in the most unlikely place. Everyone has their own reasons for staying. Some need a break. Others just want a place to belong.
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I'll Follow You Into the Dark by TheMadDisneyFan
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Undertale (Video Game)
18 Jun 2025
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Izuku was still only a baby when his sister was born, so he had never really known a world without her. The only evidence he had ever been an only child at all was a single album of baby pictures, ended with one of a 14 month old Izuku wearing a onesie that said ‘best big brother.’ To Izuku, the world had never existed without Frisk.
So when she suddenly vanished years later, it took everything in him to not let the world shatter.
+x+
Izuku Midoriya was born without a quirk, later he came to the conclusion that it must be because it would be unfair. That someone had to be quirkless to give Frisk such an amazing power. A power to return to the past to change the future. A power that even supersedes death. His knowledge of that power is what he clings to, because his sister is not dead. She can't be.
Frisk Midoriya was born with quirk that scared her. Sometimes she wished her brother had gotten it instead, he was so much better at adapting. So when her untimely fall puts her in the position to save an entire kingdom, she steps up to be a hero just like Izuku. Even if it kills her- even if kills her over, and over, and over again.
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The secret survivors by Aceaetostheslayest
Fandoms: Undertale (Video Game), Handplates - Fandom
18 Jun 2025
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Basically Ace Aetos tells us a story of how her sisters and their boyfriends were alive during handplates, remember everything and are now living in the surface with the undertale crew, everything else is gonna be found out in the story
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You first see it when you’re half-distracted, slamming numbing palms into walls to see just one more secret, one more passage. You open the first door you see and it’s there, greyed out and hollow, not so much standing as just existing in the center of the room. Its face looks cracked, forever stuck in unmoving pieces, a stillness so unnatural that it sends a bolt of fear through your chest. You freeze. It doesn’t react.
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The barrier has been destroyed. After an era of isolation underground, monsters are free once again. They long for a peaceful union with humanity, but they aren’t sure if humans are ready to welcome them. To prevent history from repeating itself, the monsters decide to study human society, hoping to understand whether people are open-minded enough to accept those who once lived underground. Thanks to Alphys’s technology, a small group of monsters - guided by Frisk - secretly infiltrates the surface to carry out this mission.
Your life feels like it has reached a point of no return. You left Europe hoping for a new beginning. However, your hopes for salvation don't seem to be meeting your expectations, not here in California. Still, you refuse to go back. You believe that your situation will improve over time. With this mindset, you adapt to your new circumstances, suppressing your depression as best you can, accepting a job you hate by telling yourself it's only the beginning. After all, you have to start somewhere, right?
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(THIS IS NOT STOLEN! I AM CONTINUING A FANFICTION THAT I ORPHANED 5 YEARS AGO!)
~You know, like the Notebook. But with less chick flick moments~
(Y/n) is running out of time in this world. So, what does she do? The only logical thing. Complete her bucket list! Filled with Determination and a bit of Bravery, she does everything she can to finish it in time. Will she be able to? Of course! Especially with a very attractive skeleton helping her. But, will meeting him spark a new desire to live?
Series
- Part 1 of Papyrus/Reader Fics
- Part 2 of Undertales Across the Multiverse
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Summary
(desc too long for ao3 oops)
Undertale#297. Glitched, unstable, banned from ever being contacted by Multiversal visitors out of fear that it could get worse. But no one considered that the Sans within would reach out. It was rare for an AU to figure out AU travel by itself, after all.
And yet, Check figured it out. But to jump immediately into a Multiverse with no sure way back and no knowledge of its happenings? No, he had a proclivity towards impulsivity, but he wasn't an idiot. Measure once, check twice, after all. So he took his time. Figured out how to target the portals, learned how to return home, refined and slimmed his design down until it was handheld, and most of all, he learned the politics of the Multiverse.
But something about it didn't sit right with him. He'd been Dust and he'd been Killer, so why were Dust and Killer spreading "senseless" negativity? He didn't know, but honestly…he didn't care.
He saw his copies, and his only thoughts were those of mischief. It was an awful idea, and he'd definitely get hurt, but…
Well, a bit of harmless impersonation was always fun.
Or; Check travels universes for the lolz and indirectly stops an eons-long war by doing almost nothing
Series
- Part 2 of Checkverse