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  • The Snake Lady (Undertale Bitty Fanfic)
    3.3K 204 21

    Ray has dedicated years of education and time to opening and running the Viper's Den. A non-profit exotic snake rescue. she likes snakes, knows a lot about them. She however knows next to nothing about bitties. it would be a real shame if 9 traumatized lamia bitties that need specialized care were dropped off at her r...

    Completed   Mature
  • I Was Reborn As Horror
    4.1K 197 5

    I died a painful death... and was reborn as horror sans... why are you reading this? You like seeing me suffer or somthing? TW Death Cusing Gore Fighting Also english is my first language, I just can't do grammar for the life of me :) Also I don't own horrortale, nor any other undertale au!

    Mature
  • Reborn In UNDERTALE!?
    17.5K 724 12

    I was just a 19 year old, living my mundane life, until I died... and was REINCARNATED!? And not only that, I was reborn in the famous videogame release in 2015 Undertale. ... What do I do now?

    Completed  
  • Divinity{OLD}{REWRITTING}
    57.6K 2.3K 18

    Did you know multiverse resets exist? Well they do, and Error is pretty sure they don't cause this much change. This isn't his multiverse. Not anymore. {This is the old version of the story, another one is being made.}

    Completed  
  • Reborn as a Echo Flower?
    162K 7.5K 48

    Where am I!?And why the heck am I suddenly a blue talking echo Flower?

  • A Demon Born Hashira
    14.3K 648 15

    What if CHANCE took Error in place of DESTINY? CHANCE is a giant demon slayer fan so its understandable he'd drop everyone's favourite glitchy sans in demon slayer. Yamane Kamiko appeared out of nowhere to the rest of the demon slayer cast. She appeared seemingly over night with an odd amount of knowledge about everyt...

  • You'll be home
    1.6K 93 9

    After helping horror leave the bad sanses, swap sans takes horror to an au where no one can bother them and where they both can live a peaceful life for a little while. I want something different no babying!! he's not blueberry and blues probably the same height of most of the sanses in the multiverse maybe a lil tall...

  • Whisper [Undertale Multiverse]
    8.8K 894 17

    In a dying multiverse, the death of Nightmare and Error unintentionally creates a new entity; Whisper. Born of destruction and negativity, the new god is thrown into another multiverse where they must learn to find their way forward. NOTE: This world is set in my own multiverse. There are elements of Empireverse, suc...

  • Papa Nightmare? [Nightkiller] [English Version]
    74.6K 2.4K 68

    Killer ends up in a small trouble, I said small? I don't think having a baby of the Nightmare is just a little problem. How will killer solve this? Will he be able to hide it from Nightmare or will he have to make the most painful decision of his life? Read this book to find out ;b Ilustration made by: @MasitaconTe_ T...

  • AU Sans X Reader One-shots
    536K 11.7K 130

    Completely female readers unless a request asks different. That's...really about it, enjoy!

  • Undertale: Soul String (Multiship) [DISCONTINUED!]
    15.3K 681 22

    Soulstring: a piece of golden string that connects through the soul of families and relatives such as close siblings, this string of hope never lets another sibling hurt the other and thus can only be broken when one soul cuts it off using the other's magic, which lets the other hurt their own relative. Warning/heads...

    Completed  
  • Just Strumming Along || {Reader x AU! Sans ((and some Papyrus's!)) }
    111K 3.4K 24

    When (Y/N)'s grandma passes away, she moves in her grandma's beach house in Oahu with her ukulele. But what happens when she plays that ukulele by the sea and a "portal" is created? What happens when VERY similar skeletons pop out of that portal? What happens when she is sent to other AU's? And what happens when sh...

  • Astral Reincarnation [On Hold]
    4.9K 202 7

    Ink, Error and Dream had became exhausted with this multiverse, sick of all of the forced creation, destruction, the forced spread of toxic positivity and the constant battling and pain. FATE loomed over them like a plague and chained their SOULs with her disgusting strings to bend them to her will. The godlings made...

    Mature
  • Kindred Souls (Undertale X Reader X Various!AUs)
    2.5K 57 3

    sᴏᴍᴇᴛɪᴍᴇs ʏᴏᴜ ᴍᴇᴇᴛ sᴏᴍᴇᴏɴᴇ, ᴀɴᴅ ɪᴛ's sᴏ ᴄʟᴇᴀʀ ᴛʜᴀᴛ ᴛʜᴇ ᴛᴡᴏ ᴏғ ʏᴏᴜ, ᴏɴ sᴏᴍᴇ ʟᴇᴠᴇʟ ʙᴇʟᴏɴɢ ᴛᴏɢᴇᴛʜᴇʀ. ᴀs ʟᴏᴠᴇʀs, ᴏʀ ᴀs ғʀɪᴇɴᴅs, ᴏʀ ᴀs ғᴀᴍɪʟʏ, ᴏʀ ᴀs sᴏᴍᴇᴛʜɪɴɢ ᴇɴᴛɪʀᴇʟʏ ᴅɪғғᴇʀᴇɴᴛ. ʏᴏᴜ ᴊᴜsᴛ ᴡᴏʀᴋ, ᴡʜᴇᴛʜᴇʀ ʏᴏᴜ ᴜɴᴅᴇʀsᴛᴀɴᴅ ᴏɴᴇ ᴀɴᴏᴛʜᴇʀ ᴏʀ ʏᴏᴜ'ʀᴇ ɪɴ ʟᴏᴠᴇ ᴏʀ ʏᴏᴜ'ʀᴇ ᴘᴀʀᴛɴᴇʀs ɪɴ ᴄʀɪᴍᴇ. ʏᴏᴜ ᴍᴇᴇᴛ ᴛʜᴇsᴇ ᴘᴇᴏᴘʟᴇ ᴛʜʀᴏᴜɢʜᴏᴜᴛ ʏᴏᴜʀ ʟɪғᴇ, ᴏᴜᴛ...

    Mature
  • Reborn as grillby from undertale
    7.1K 327 3

    What if someone from our world was reborn as grillby as the original grillby? What if everything now happens more differently because grillby is now going to be more different? (Everything starts differently, gaster is still there cause grillby saved him, differently beginning, different middles, different ending, ev...

  • Story of Forbidden
    2.7K 140 9

    "I am no ordinary "Sans" you see. My name is Forbidden. And this name is my whole existence to the different world that I once came from. I should start from the very beginning; where my life changed." For countless times that the human did a genocide run, they never killed Sans. Why even though they killed everyone...

    Completed  
  • Another Chance (Reborn as a Sans From Naturetale)
    16.8K 980 11

    "Please just... leave me alone..." Maybe that was the last straw for me, the last beating I could take before it finally kicked me off the edge. The last of anything I could handle. I've had enough of this. There was nothing I could want, nothing I held on to, no one to stop me for what I will do. So, why do my 'eyes...

    Mature
  • The subsiding strength of a Swap Sans
    3.8K 187 11

    Swap didn't want to be this way, he really didn't want to, but fate seemed to have other plans. Swap was always busy, why does he keep himself up at night and moving during the day? It seems he may just be strong and wants to help, but that's not the entire story... There is only so much that someone can take before t...

    Mature
  • The meal of a lifetime (horror!sans x reader)
    11.8K 303 19

    (Y/N) is 18 and living with her older sister (S/N). Her life gets turned upside down when hungry human-eating monsters get released from the underground. However there is one monster who deems you gorgeous enough to save from the hell that was your home. WARNING: contains mature themes (violence, gore, sexual abuse...

    Completed   Mature
  • (Waiting For Rewrite) Transcendent Realities: Embracing this Powers
    1.7K 66 5

    In the convergence of cosmic threads, a soul found itself reborn, infused with an otherworldly essence in this fantastical universe. This reincarnation brought forth powers akin to Sans's vast and enigmatic Alternate Universe abilities. Emerging into this new existence, this individual now carries the extraordinary ma...

  • Repeated Reincarnation (REWRITE!) {SLOW UPDATES}
    36.8K 2.4K 32

    It was a bit...ironic, honestly. He (was he a 'he'? or was he a 'she'? he- she- they- didn't remember the life before all of this...) was just a regular person, as so he thinks, he didn't remember much of his actual past life. Just that he was human and..just normal. He didn't really expect to die and reincarnate, aga...

    Mature
  • 𝑰 𝒔𝒕𝒊𝒍𝒍 𝒍𝒐𝒗𝒆 𝒚𝒐𝒖 // 𝒗𝒊𝒍𝒍𝒂𝒊𝒏 𝒔𝒂𝒏𝒔𝒆𝒔
    44K 1.8K 14

    I have always been unlucky with love huh... I'm the 'Unrequited Love Repeater' that's right. It's almost like Cupid himself hates my entire existence. I met them again. My failed romance stories. The people who made me learn from my mistake. The people who taught me how to love myself. The people who broke my heart...

    Completed   Mature
  • I Want To Forget (Killer Sans x Reader)
    238K 8.4K 34

    Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapped underground with a monster that wiped out his own kind. He's a cold-blooded killer that never shows any emotion. Though, as time passes, she finds...

    Completed  
  • Killed it! {Reincarnated as A Killer Varient}
    36.4K 2K 17

    ⪼Beaten up and betrayed, {Name} dies an unfair death because of their best friend. Having their life and their brothers whisked away in a flash. ≫They find that they inhabit a certain skeletons body, trying to live happily before having their murderer breathe down their neck each second. ≫Its up to {Name} to figure ou...

  • Itty Bitty
    11.4K 238 15

    You had been in the shelter for a long time, bouncing between owners. Until one day a part monster came looking for a bitty (Art is mine)

  • The world of bittys
    8.6K 388 17

    Y/n was just a normal 20 year old girl who lived by herself. One day she receives news that there's a new bitty store around town! She decides to go see some bittys for herself but what she didn't expect was that she sorta might've bought a few? Bittys you will adopt: Undefell papyrus Classic sans (But blind) Ink sans...

    Completed  
  • Playing With Heartstrings
    809 28 7

    What if, in another life, there were monsters? What if, they were your friends and family? Would it be interesting? Probably, but humans are scared, we are always scared. We shame others of different skin color or religion. What is to say that we wouldn't do the same to monsters? Monsters would be kind yes, but they w...

  • Grillby x abused reader ( love at first light)
    12.3K 226 20

    This contains fluff and lemons reader caution rape and abuse mentioned Advised trigger warning Your father passed in a car wreck and your mom gets together with his best friend she isn't who she used to be your life is changed forever will you have a happy ending i do not own undertail that is the property of toby f...

    Mature
  • Void [Nightmare X Reader]
    184K 6.5K 37

    Y/N is the Guardian of nothingness. The shrub with flowers that she protects is home to all things that are considered to be nothing. When a walk in the woods allows her to make a new friend,a problem arises from the shadows. As Y/N tries to find balance between the protecting her plant and Nightmare a margin of error...

  • Fades to Static.
    984 51 5

    {A Bittybones AU x Gender Neutral Reader} ------------------------------------------ Working from home is so very easy, but ever so boring. . . . Until it isn't. ------------------------------------------ - Original Bittybones AU by good ol' Mama Cry on Tumblr - Plenty of non-canon material here - Undertale by Toby Fo...