Undertale Stories

"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

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

Fresh is Admin of the Multiverse!? This can't end well ... or can it? This is an alternate universe - er, multiverse - where Fresh is responsible for the monitoring and disciplining of Players and Hackers as well as hunting down and eradicating any virus or external threat to the multiverses balance systems. Now what's this about some unrad lady called Fate? Welcome to Admin Fresh Verse (AFV for short i guess lol) *** FGoD concept by Harrash6 Characters belong to their respective owners Undertale by Toby Fox **** How the FRESH did i manage #1 in fgod !? Now 1nd in fresh !?! i ... i'm gonna sit down

4 years after monsters came about Ebbot (Y/N) was friends with the Dreemurr children. Being the master dancer that she is can gather her magic to do amazing things. Having been through a lot in the short 19 years of life. She finally meets a handsome monster who knows her big brother and who understands what she goes through. What will happen between these two?

Born into a world that decided his fate before he even took his first breath, Ryomen Y/N was never given a chance to be human. Feared by his own mother. Hated by his village. Rejected by humanity itself. They called him a curse. So he became one. With nothing left but silence and resentment, Y/N abandons the human world and falls into the Underground-a place filled with monsters who fear the surface just as much as he despises it. But the Underground is not what he expected. Monsters do not see him as human. They see him as something far worse. And within the depths of this strange world, he meets a wandering ghost named -a soul bound to the past, carrying hatred and emptiness similar to his own. At first, they are nothing alike but conflict and silence. Yet as their paths continue to intertwine, something begins to shift. Two broken souls. Two histories of rejection. Two beings the world tried to erase. And in a place where mercy and determination decide fate itself, Y/N must confront a terrifying truth: Maybe the real monsters... were never in the Underground.

Saitama gets stuck in the Underground. Well, this'll be interesting!

Yeah sorry gained an idea on if someone became swap Gaster Also they may be apathetic or just confused on their feelings and MAYBE Autistic, I may be a bit wrong on apathetic or not completely accurate idk yet And it's a huge maybe on the autistic part it might be mentioned at some point or not I usually don't do this kind of story on something like using apathetic and perhaps autistic but i decided I wanted to try. And the maybe confused kind feelings is not knowing what they feel or if they even feel anything and all

Two worlds. Five and a half gems. Eight and a half monsters. Three humans. One little yellow flower. And an experience that none of them would ever forget.

Reborn as nightmare sans You were, oh, ways angery at something.. no matter how many times you try to destroy it. It still kept coming back. You were reborn as Nightmare, but instead of the beautiful sky, it was full of blood and negative. Dream was stone with tears. You were angry at him but didn't know why.... Then your angery change over time, and you learn to keep your anger in a bottle in your rotten soul. But one day is broke, and your out control and a beast form is controlling you... Waring Self-harm (sh) Body disorder Violence Language Smoking/ drinking Dramatic Angst Trauma Death/murder/ life is unfair Suicide (SU)

Timelines, genocides, deaths, ... It all stopped suddenly, leaving a hole in the stream of time. How will Fate repair it ? Will the souls participating in this stay themselves ? Story started on 21/03/2026 Arc 1 : The prologue started on 21/03/2026 ended on 08/04/2026 Act 2 : The Descend started on 16/07/2026

Killer always knew he would burn in Hell. All the sins he committed. All the death that came with every step he took. Killer was out looking for something new, while Nightmare wasn't around to fix his unstable soul. He meets three little red bastards and their big bad wolf. "eh, you kill, i kill. what's the worst that could happen?"

A sequel to When Dimensions Collide With the presence of the Multiverse Protection Service, the multiverse is now at peace, or so everyone thought. When the universe thought nothing could go wrong after the events of the multiverse collision, an entity from the darkest depths of the multiverse suddenly appears and attacks any world it can find, turning each world's inhabitants into its hostile minions. Due to this, the MPS is now tasked to hunt down the monster and send it back to where it belongs before it corrupts another dimension.

After the monsters broke free from the underground they enslaved all of humanity. The monsters took complete control over the world and the world was powerless to stop them. This is the story of a young boy named Matt O'Donnell, a boy who was an orphan during the time of the monster invasion was captured by the prince of monsters, Asriel Dreemurr. Will he find a way out of this dreaded nightmare and be free or will he suffer and die. (I don't own any of these pictures)

Outer fell, the void taking his body... But another saved him, or at least his soul... Outer wakes in a new body, a child. Far far away lost, who saved him. Why? He had to find his home, his multiverse to stop the imposter wearing another's face. Before they caused another to fall

True strength isn't measured by who you can defeat. It's defined by who you choose not to destroy. From the ashes of three beloved tales comes a single, cohesive chronicle-a rebooted odyssey of destiny, consequence, and rebellion. The Definitive Edition weaves together the legacies of those who came before, those who endured, and those who dared to change everything. A reimagined epic. A fate rewritten. A world reborn. This is not just a continuation. This is a rebirth. // DO NOT BE FRIGHTENED BY THE READ TIME!

everyone knows killer..... but do they really know him? he knows as part of Nightmares gang and merciless killer? but.. wait, do Nightmares gang really knows killer? killer has been insane for years... but somehow, how has Insanity and cares for his loved ones? or did he... no... H̴̨̨̙̥͕̯̫̜̯̬̜̬̥̪̭̣́̑͐̈́̀̑̒̃̀͗͛̓͗͘̕̚͜͠͝͝ ̷̨̣̩͖̦͚̏̽͌́̔̋͊̀̍͌̈̌̉̓̌̄̚̚͠͝Ȩ̸̡̢̢̧͍̝̥̖͎̲̼̱̩̗̤͈͚͉̖̞̪͚̰̩͍̻̖̗͈͈͋̑̔̾̿̔͗̅̇͗͌͆̏̍̆̀͗̇̀͐̈́͑̉͗͂͆͋̏́͊̌͆̈́́́́͊͘͘͜͝ͅͅ ̷̨̡̨̻̝̮̠̤̜̯̠̝̫͈͉̻̠̪̺̙̯͈̪̹̹̬̦̖̲̰̗̜͉̖̗͚̀͛̄̽͊̀̂̾͋́̇̾̀́͑͋̎̏̅̍́̈́́͊͐́̄̽͘̕̕͘̚̚͠͝͝͝͝ͅL̵̢̢̯̭̘̳͎̙͖̯͔̻͉͉̦̤̖̺̠͔̺̲̭̩͈̲̭͎̘͓͕̜̄̆́͊̑̇̀̒̉̐̿̾̋̈̐͝ ̷̧̢̨̙̻̜̗̬̻̩̘̺̟̖̋̒͌́͋̈́͗̀̈́P̵̨̡̨̻͚̺͚̜͖̞̗̤̘̖̪̭͙͖̬̜̜̳̝͔̹͔̦̫̙͕̣̻̺̊̏̾̾͒̾͗͐̅̔̓̌̿̍̌̎̈́̉̏̏̌̔͛́͘͠͠͝ ̶̨̲̻͓͕͉̺̺̲̰̱̘͉̗̱̞̪̱̙̟̗̖̖̖͍͈͙͙̮̜̩̘͓̤̘͗̅̂̀̉̈́̇̆̌̔̔̔̆̓̐͌͐̄̈̓̽͘͘̚͠͝͠ͅ ̷̨̧̧̨̧̢̡̼̜͚͉̥̲̻͉̝̱̜̞͕̻͓̹̙̯͎̠͚̫̜͕̺̝͍̩̼̩̮͓͓̍̍̔͜͠M̵̡̢̨͚̻̥̥̤̞̣̬̞̫̻͖̳̯̯͚͙͎̤͇͉̣̯̬̖͔̥̙͓̺͗̈̓̽̌̌̏̋̓̂̅͛́͂̋͐͒̂͋̃̎͝͝ ̴̧̨̧̧̺̟̝̯̟͇̯̫̱͓̯͕̗͍͕̳̰̝͇̳͍̘͋̐͒̔͆̃̄̽͒̓̋͐̽̀͒̊̇͒̔̏͗͋́̂̂͆̿́̓̄̊͠͝͝E̷̡̡̨̨͎͓̠̼̹̼̻̺̗̩̟̥̙̬̠̪̩̘̹̤̤̤͖͇̮͎͖̗̤͉̹͚͍̦̹͚̅̈́̃̓͛̌̓̈́̎͒̍̇̒̎͂̈̒̉͒͗̌̑̇́̂̉̋̄́̿̐̍́̿̈́̆̓̕̚͝͠͠ no.....he trap..... he stuck in a cruel game....where he sees everyone he loves, die in his arms and front him. and it REST over and over and over again...... without his creater of the universe knowing let an evil god torture him like her puppet. unilt he SNAPS and start having breakdown... and for the creator of the universe to find out and torture the god who him

There's only one rule for those capable of AU hopping: never bring a real person into the Undertale multiverse. But, like all rules, it was destined to be broken. | - Error Sans x Female Reader - Young Error - take places not long after he becomes Error - so he mimics his canon version more closely at the start before molding into my fanon version with experience - This intentionally doesn't follow the exact plot of Aftertale either - Achingly slow burn - I abuse Y/n more than necessary (oops) and Error is toxic pre-character development. This isn't meant to portray a perfectly healthy relationship, but show that perhaps even the worst person can change - The friendship dynamic is: bffs that insult each other for fun (while not meaning a word of it) & I include a lot of what's deemed 'filler' content b/w Y/n & Error (y'all just 'hanging out') bc there has to be a solid foundation for Error of all people to care about someone else - Expect a heaping helping of banter 👍 (I couldn't help myself)

What does it mean to LOVE? What does it mean to HATE? It doesn't matter. So long as you stay DETERMINED. Yuki Tsukumo x Male Reader --------- top tags (ranked): 1. [#19 in Undertale] 2. [#10 in Frisk] 3. [NONE]

Izuku Yagi, you've read the many stories on this kid millions of times so why not make this one a bit different. So strap in because we're going to be one hell of a MAD time.

♚ °ᏇℰℒℂᎾℳℰ ⅅᎯℛℒℐℕᎶЅ° Please enjoy my Undertale RolePlay, thank you for Participating and reading this book. ~ $ageMonstä ♛ ➴➵➶➴➵➶➴➵➶➴➵➶➴➵➶ 。・°°・íղƒօɾʍɑԵíօղ・°°・。 h e l l o e v e r y o n e. This book has been in my mind for a long time now so I decided to do it, I'm going to work my way up the ranks, watch me fly high into the sky with my internet wings. I made something like this a while back but deleted it from how embarrassing it was, I'm not like that anymore. I think. Other than that there isn't really much to say here, I will go over the RolePlay in more depth for later chapters. Until then, see you later guys. ➴➵➶➴➵➶➴➵➶➴➵➶➴➵➶ 。・°°・օԵհҽɾ ՏԵմƒƒՏ・°°・。 !!! I do not own Undertale, the game belongs to Toby Fox and his small team. All I own is my own are my Characters and storyline. ¡¡¡ ➴➵➶➴➵➶➴➵➶➴➵➶➴➵➶ ❝ Sometimes you won't know the difference between being alright and being ok, just keep your head up and you'll be fine. ❝