Undertale Stories

(TW: unaliving thoughts and memories at the beginning. It gets better over time, don't worry! Trauma is difficult to overcome...) You didn't want a second chance. You didn't want to survive. You wanted the sweet release of death. But it seemed like the universe was far too cruel to allow you even that. It took away your memories, your free will to choose whether you live or die...hell, it took the one thing in life you owned! Your own name! And now it seemed like you had to live yet another cruel life, doing things you never wanted done to others. But...at least you could do things your way. Maybe this second chance wouldn't be so bad... (Reincarnated as Nightmare Sans, but unlike other stories, you have no clue what Undertale even is) (WE REACHED NUMBER 1 IN THE UNDERTALE TAG YOOOOOOOO) (9/13/25)

Chara and Y/N were childhood friends, knowing each other since kindergarten. Unfortunately, one had to move away, leaving the other alone. When they returned, they came back to see their childhood friend they missed so much. But the one they met was entirely different from what they remembered. Inspired by : Mikoto-chan doesn't want to be hated from Pt. Story started on : 14/01/2026. Thumbnail by : @kohaku_chara on Twitter (Or X) : https://x.com/kohaku_chara/status/1627648846443728897

This is a story about how a monster got into a world filled with demons. What will he do?

I have too many memes so here

Abandoned on Mt. Ebott at the tender age of five, young Harry's unsurprisingly died, but Death's always had a weird relationship with his variant... Meanwhile, before Flowey's revival as souless talking flower, Sans makes a discovery under the mound of snow, Papyrus has always wanted to be a big brother anyways. *Edited Summary (29/09/2025)

TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other people? Only time will tell. Hello, this is going to be my first book and idk if it's going to be good so meh :v This story was inspired by transported as a voice by Virus_bOi, I obviously do not own undertale and I don't keep up that much with the fandom, so some personalities might be different, but hey. I can just say that it's a different multiverse ¦ ] The cover image is from Shira Wolfiecute on tumblr

This isn't a normal Y/N story the bad sanses do a raid on an illegal auction of many rare, dangerous, and illegal things. but after the dust settles, killer finds what he believes to be a weird mutated cat and decides to take it back with him art by me. my first book, and feel free to correct my spelling in the comments Y/n means your name Y/fc means your favourite colour Y/fm means your favourite type of meat Y/hl means hair length Y/hc means hair colour Y/sc means skin colour Y/ec means you're eye colour

"the healer likes t' sleep. like, a lot." Axe looks at the sole female AND human member of Nightmare's subordinates. She was only ever awake for about 8-10 hours a day, rarely ever 12, it was both fascinating and irritating at the same time. He was damn sure humans would be awake for more hours than that, he even asked Murder at the time if it was normal. Said skeleton didn't give a single care though, his words: "who cares, makes her more tolerable. 'sides she gets her job done." The cracked skeleton just couldn't shake off the feeling that there was more to it than meets the EYE. ━━━PHOTO CREDITS: Whale鯨豚 [@Whale5511] on X! ━━━MOST NOTABLE RANKING: #1 in sansxreader, horrortale, something new and badsanses on 23/12/2025 #1 in undertale on 25/12/2025 #3 in bittersweet on 24/12/2025 #5 in reader on 24/12/2025 #19 in sans on 23/12/2025 ━━━━━━━━━━━━━━━━━━ DATES PUBLISHED: 001 ━━ July 29th of '25 002 ━━ July 30th of '25 003 ━━ August 1 of '25 004 ━━ August 3 of '25 005 ━━ August 6 of '25 006 ━━ August 8 of '25 007 ━━ November 8 of '25 008 ━━ December 22 of '25 009 ━━ December 23 of '25

Have you ever thought about what it would be like to be.. Sans? Be Papyrus' lazy and playful brother? Be a comedian with endless jokes? Be the mysterious judge? Be well-liked? You envy him. You wanted to be him. Yet nothing could've prepared you for what's coming. . . . (WARNING, THIS IS A MIX OF CANON AND FANON FACTS. THERE MIGHT BE THINGS YOU DONT LIKE BUT JUST BE THE BIGGER PERSON AND TOLERATE IT. THIS IS NOT MEANT TO BE TAKEN TOO SERIOUSLY AND IS INTENDED ONLY FOR ENTERTAINMENT.) (Cover made by me. As you can see, I made that thing on IbisPaint. I understood nothing about making book covers and I messed up on the proportion many times so I gave up and that's how the cover came to be. Idk how to shade and make backgrounds/landscapes btw) (Tbh I wished I made this far earlier because it's late 2025, no one is going to read this pile of nonsense. 😭) YOU GUYS HAVE AN OPTION TO CHOOSE THE DIRECTION OF THIS STORY THROUGH FREQUENT POLLS I MADE!!! First thought of and made on 1st Dec 2025 Posted on 6nd Dec 2025 cuz I was feeling confident for that hour. I can proudly say I've been doing this book since last year hahhahahahahahaha (get it cuz I did this thing is Dec 2025 and now is Jan 2026?)

Why Toriel, with her creepy obsession with the fallen children and in need of Therapy. Was it truck-kun? They'd rather like to know, and really hoping this is cannon and no Genocidal children At least its after the run to the ruins portion they took over Co-written with Philippaki!

After falling in battle against Chara and losing everyone in the Underground, Sans awakens in Mewni, a strange world ruled by ancient magic and wild creatures. For three weeks he survives alone in a cave as a hermit until witnessing an important event: the birth of the kingdom of Mewni, where Glossarick grants the first magic wand to the settlers, beginning the history of the kingdom

The player or you have transmigrated into the world of the digital world, where indie games like omori, yume nikki, little nightmares, undertale, hello charllote or digital circus, gravity falls or etc...

The Multiverse died. It shook. It wailed. Everything died lost to the endless void. Two survived changed, now they seek a new home and happy ending

(This is just going to be a fairly short story to give you the needed information for a future book.) This story will be very different from the normal plot of Undertale, for one almost everyone is human, meaning no magic. (at least by traditional means) you will take the place of Sans, and this will mostly take place away from Mt Ebott, on the surface. (please do be forgiving as this will be the first story I have ever "written".)

A small crossover between undertale and kirby. how will this adventure go? let's find out No videos or sounds are mine No characters are mine

so uh this is the oc I made for chainsaw man art ain't mine found it in pentirest

For centuries, monsters have been buried beneath the earth, trapped by a magical seal that only seven human souls can break. But the Royal Scientist is tired of waiting for the surface world to fall. To shatter a barrier forged by the strongest human mages in history, he has decided to stop following the rules of the living, and start rewriting the laws of the dead. From a sliver of ancient bone and a vat of concentrated magic, Subject H4Y.D3N is born. He is a ghost of a god-like race, a draconic monster brought back to a world that has forgotten his kind. But life engineered in a cold laboratory comes with a price. As Gaster carves the path for two more "vessels" to follow, he realizes that power is not easily tamed. Toby Fox is the creator of undertale, I only created this AU and Hayden is my creation

Fictional characters come to my life. Read and imagine.

Reborn as the guardian of positivity, you find yourself in a strange new world, uncertain of what it may hold. Navigating it isn't easy with gods like Nightmare and Error trying to strike you down every step of the way. But unlike the previous Dream, you have nothing to lose, and are determined to forge a better path than the soul whom you have replaced.

Basically dis is exactly what the title says it is xD I am ze magnificent Author-cha- I MEAN SANS!! Enjoy~ :3 ♡