1 - 20 of 8,386 Works in Sans (Undertale)/Reader

Navigation

Listing Works

  1. Tags
    Summary

    You are in control of the reader — their choices, their memories, their fate. But don’t worry; nothing is ever truly final. You can always try again.
    Just… be careful. Even broken minds can only take so much before they shatter for good.

     

    Stay Determined! ⁽⁠⁽⁠ଘ⁠(⁠ ⁠ˊ⁠ᵕ⁠ˋ⁠ ⁠)⁠ଓ⁠⁾⁠⁾

    ( This was supposed to be a Delta x reader but.. I'll do that another day! Updates may be slow since I want people to see this.. but I'm too excited so AAAAAAAA!!!!! )

    Language:
    English
    Words:
    2,687
    Chapters:
    2/?
    Collections:
    1
    Comments:
    9
    Kudos:
    7
    Hits:
    62
  2. Tags
    Summary

    Falling into the Underground wasn’t on your to-do list. Falling for two skeletons definitely wasn’t either.

    Blue is sunshine bottled in bone—sweet, loud, and determined to make you smile even if it kills him. Rus is quiet, steady, and the kind of person who remembers your favorite tea. Between the two of them, you’re constantly flustered, overfed, and very, very loved.

    When both brothers realize they’ve fallen for you, chaos ensues—except it’s the polite, apologetic kind of chaos where no one wants to hurt anyone else. What starts as a tangle of awkward affection becomes something honest and warm: a relationship built on trust, laughter, and a whole lot of skeleton hugs.

    “WE CAN SHARE THEM!” Blue insists, bright as ever.
    Rus sighs. “That’s not how dating works, bro.”

    Language:
    English
    Words:
    4,513
    Chapters:
    5/10
    Comments:
    2
    Kudos:
    33
    Bookmarks:
    2
    Hits:
    361
  3. Tags
    Summary

    You've come all this way-

    Who said anything about giving up?

    (A collection of one shots, and requests are welcome)

    (...I make no guarantees they'll happen though...)

    Language:
    English
    Words:
    49,395
    Chapters:
    35/?
    Comments:
    162
    Kudos:
    314
    Bookmarks:
    40
    Hits:
    10,840
  4. Tags
    Summary

    Where Killer drinks one of Ink’s paints on a dare, and you reap the consequences.

    Language:
    English
    Words:
    1,049
    Chapters:
    2/5
    Kudos:
    18
    Bookmarks:
    4
    Hits:
    240
  5. Tags
    Summary

    You and your daughter Amelia have left a highly abusive situation with your ex. Poor Amelia has silenced herself to protect you and herself for the longest time. You had been afraid to leave but the moment he started to go straight for your daughter and not you? Gave you the courage to leave and spirit your daughter away to an old house that belongs to your Great Aunt. She had fallen and broken her hip, knowing how far you've come she offers you her place to stay while she recovers in a facility... though before you leave... she says things tend to go bump in the night.

    Series
    Language:
    English
    Words:
    3,798
    Chapters:
    1/?
    Comments:
    4
    Kudos:
    29
    Bookmarks:
    8
    Hits:
    146
  6. Tags
    Summary

    You had been playing an immersive VR game: The World Of Aspenheim. However, after 10 years, the servers were about to close and to give your last farewells, you decided to stay online until the servers kicked you out. In the end, you fell asleep on the golden throne...

    Only to wake up still logged into the game!? And why couldn't you log out!? And who was the one knocking on the door!?

    "YOUR HIGHNESS? ARE YOU AWAKE?"

    Language:
    English
    Words:
    262,566
    Chapters:
    30/50
    Comments:
    273
    Kudos:
    618
    Bookmarks:
    121
    Hits:
    18,872
  7. Tags
    Summary

    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

    Language:
    English
    Words:
    31,194
    Chapters:
    8/?
    Comments:
    23
    Kudos:
    114
    Bookmarks:
    39
    Hits:
    1,265
  8. Tags
    Summary

    The arrow is pulled back from your face. You let out a breath you hadn't even noticed you were holding in. Your shoulders fall in what you think is relief, but you are completely overcome with dizziness.

    It's then, in your dazed state, that Dream, the same man you had just been trying to kill, offers his hand out for you to take.

    You blink.

    He can't be serious. This has to be some kind of trick, maybe you had actually died, and this is some illusion your mind was playing on you in your final moments.

    But despite everything,

    Something in you wants so desperately to take his offer.

    Language:
    English
    Words:
    1,577
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    80
  9. Tags
    Summary

    Your dear friend Reishu was in danger, she suddenly got attacked by a mysterious skeleton in a black and white, who carries a big blade on his back. In this fight you truly did your best to protect her, giving it all your efforts.

    After a long battle, you lay on the ground, defeated and hurt, the only thing that's is on your mind is the fact that you managed to buy some time for your friend. That you did good.

    The unknown skeleton lean closer to you, saying something, but you hear none of that, refusing to listen the words of the enemy. Despite it feeling like the end, you wish to do something before taking your last breath. You haven't used your magic for the past ten years because of how messed up it got after your father passed away, but now you do not care about messing up. With the last effort, you do your best in attempt to take this guy with you. Reaching for your soul, you use a spell to end this, to take rid of this intruder!

    Language:
    English
    Words:
    92,174
    Chapters:
    18/?
    Comments:
    51
    Kudos:
    96
    Bookmarks:
    19
    Hits:
    2,735
  10. Tags
    Summary

    You and Horror enjoy having movie nights together but this time was a little different.

    Language:
    English
    Words:
    2,450
    Chapters:
    1/1
    Kudos:
    15
    Bookmarks:
    2
    Hits:
    156
  11. Tags
    Summary

    You’re a bit of a nervous wreck type of girl, chew on ice as you hide into your room. Though no one could blame you, after all you lived with asshole skeletons that makes it their goal to push you around and bully you.

     

    Why you may ask?

     

    ALL BECAUSE A BITCH NAME LILIAN!

    ——-

    They all hate you but if they gave you a chance they might like you…

    (Heavily been Edited PLEASE RE-READ ) nov/13/2023 - feb/12/2024

    Language:
    English
    Words:
    229,157
    Chapters:
    72/?
    Comments:
    616
    Kudos:
    602
    Bookmarks:
    126
    Hits:
    23,810
  12. Tags
    Summary

    The thing about soulmates is, no matter what pries them apart, they always...always find a way back together

    Chapters 1-3: Prologue
    Chapters 4+: Main Story
     

    *This is a rewrite of I Have The Power of Gaster AND Anime On My Side. Same concept, with a bit of a serious feel.*

    **Please be aware that this is not like my usual reader-inserts!! This story is in 3rd person pov, very vague description of a female reader. Unnamed (Pet names only). No use of y/n, y/e/c etc.**

    Language:
    English
    Words:
    246,610
    Chapters:
    20/?
    Comments:
    147
    Kudos:
    122
    Bookmarks:
    41
    Hits:
    3,397
  13. Tags
    Summary

    You and your family are just enjoying a nice day at the park, when a life changing event happens that ruins everything.

    You get taken away to a facility to be tested on...

    Life doesn't feel as peaceful as it once did, you hated your new life.

    "I wish I could just go into those story books I used to read..."

    Language:
    English
    Words:
    121,811
    Chapters:
    20/?
    Comments:
    87
    Kudos:
    301
    Bookmarks:
    86
    Hits:
    7,091
  14. Tags
    Summary

    An unfortunate accident one dark winter night sweeps you off your feet and leads you into a chance encounter with a house full of skeletons! They’re charming, witty and punny all around, but for reasons only known to you - you escape their friendliness intending to never step foot near the woods, or the skeletons, again… or that was the plan at least. What you couldn't have expected was that they're rather stubborn, and for some reason very intent on befriending you? No matter how much you avoid them or how many excuses you provide - they just keep popping up?! Why you?! Why now? And why are there so many?!

    Will you be able to ward off your new skeleton suitors and keep your age old secrets, or will you succumb to their wily charms and submit yourself to their affections despite your unnatural circumstances? Will you be able to come to terms with befriending them or will you abandon it all, leaving them and all they are in the dark…

    A tale as old as time, in which the reader goes through all 5 stages of grief trying to avoid the skeletons, with very little success and a ridiculous amount of shenanigans.

    Language:
    English
    Words:
    57,109
    Chapters:
    9/?
    Comments:
    91
    Kudos:
    255
    Bookmarks:
    60
    Hits:
    5,001
  15. Tags
    Summary

    You were so excited to finally get married to your long time fiancé, only for him to leave you for another girl with nothing but a note. Lucky for you, your two best friends were there to help you through this rough patch of your life.

    Arc 1: Chapter 1 - 18
    Arc 2: Chapter 19 - ?

    Series
    Language:
    English
    Words:
    20,702
    Chapters:
    18/?
    Comments:
    206
    Kudos:
    192
    Bookmarks:
    41
    Hits:
    4,574
  16. Tags
    Summary

    Various scenarios that pop into my head and involve the UT characters we all love!

    Chapters so far:
    Meeting for the first time!
    Meeting again
    Becoming friends

    I'm always open to suggestions! Undergoing revisions.

    Language:
    English
    Words:
    8,757
    Chapters:
    4/?
    Comments:
    13
    Kudos:
    215
    Bookmarks:
    21
    Hits:
    5,352
  17. Tags
    Summary

    Dust scared you. He scared you more than all the rest of his team put together. That being said, you were going to help him through this little mishap even if it killed you.

    Series
    Language:
    English
    Words:
    2,075
    Chapters:
    5/?
    Comments:
    4
    Kudos:
    83
    Bookmarks:
    11
    Hits:
    1,054
  18. Tags
    Summary

    Once upon a time, the Underground split itself into four parts, quadrupling the population in a way that no one noticed until the barrier broke. This is weird to think about, but it really isn't your problem. That's someone else's existential crisis.

    Except it turns out that your Soulmate is a monster, and due to that split, there are four of him now. Oh wait, and his brother is your Soulmate too. You have eight Soulmates! Congratulations! You are now under investigation by the Home Above United Monster Alliance government.

    Turns out some of these guys are pretty important.

    Series
    Language:
    English
    Words:
    18,129
    Chapters:
    6/?
    Comments:
    79
    Kudos:
    345
    Bookmarks:
    115
    Hits:
    4,051
  19. Tags
    Summary

    Sans is the Bane Of Your Existence. Pranks and Puns haunt your days whenever he is near. Unfortunately, Papyrus is your best friend, and you'd do anything for him. Even if that means taking care of his brother after an experiment gone wrong turns him into a massive, and even lazier, house cat.

    Series
    Language:
    English
    Words:
    4,347
    Chapters:
    11/?
    Comments:
    13
    Kudos:
    110
    Bookmarks:
    21
    Hits:
    1,250
  20. Tags
    Summary

    Sometimes life throws you a curveball. For you, your curveball was going to bed looking like a human, and waking up looking like a monster.

    A skeleton monster to be precise.

    With the barrier breaking, a large surge of magic descended on the town you live in, and transformed you overnight. Unsure what to do with you, and the others changed, you're ushered into a facility until a monster with similar magic can take you to teach you how to wield the now uncontrollable magic you've been given. After waiting in this place for four years, you'd given up hope that anyone would ever want to take you.

    What a surprise for you when you find out that someone does. A lot of someones.

    Language:
    English
    Words:
    718,077
    Chapters:
    92/?
    Comments:
    4,503
    Kudos:
    4,652
    Bookmarks:
    1,046
    Hits:
    272,841

Filters

Filter results:
Submit

Include

?
Include Ratings
Include Warnings
Include Categories
Include Fandoms
Include Characters
Include Relationships
Include Additional Tags

Exclude

?
Exclude Ratings
Exclude Warnings
Exclude Categories
Exclude Fandoms
Exclude Characters
Exclude Relationships
Exclude Additional Tags

More Options

Crossovers
Completion Status
Word Count
Date Updated
Submit

Clear Filters

Navigation