1 - 20 of 4222 Works in Sans (Undertale)/Reader

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  1. Tags
    Summary

    Red gets you as a roommate for his wallet's convenience and ends up liking you a bit too much. One day, you're late coming home from work, so he decides to search your room for clues as to why. What he finds catapults you both into an awkward, tsundere dance around emotions.

    Language:
    English
    Words:
    163,668
    Chapters:
    64/?
    Comments:
    1898
    Kudos:
    1397
    Bookmarks:
    219
    Hits:
    27869
  2. Tags
    Summary

    You didn’t remember much but… it seemed like, in your life, hope was far and in-between - before and after the fall. Too bad life doesn’t let you brood long as it throws you a few kindred spirits in the form of a cute kid and a couple of boneheads, one of which annoys the hell out of you but won’t leave you alone. You’d ignore him and his shit-eating smile if that something in your chest would quit tugging you in his direction. Certainly, it was leading you to your utter demise. In pundom. Or straight to the pungeon as he’d say, unfortunately.

    Language:
    English
    Words:
    20,052
    Chapters:
    11/?
    Comments:
    96
    Kudos:
    192
    Bookmarks:
    38
    Hits:
    2166
  3. Tags
    Summary

    “let me make you an offer, kid.”

    Language:
    English
    Words:
    1,298
    Chapters:
    1/1
    Hits:
    0
  4. Tags
    Summary

    Waking up from what was expected to be a simply mission Sans finds himself captured and nothing really goes how he expects. Even down to the human he finds himself locked in a room with. ((FellSwap Red))((Point of View from Sans))

    Language:
    English
    Words:
    89,868
    Chapters:
    30/?
    Comments:
    66
    Kudos:
    87
    Bookmarks:
    9
    Hits:
    840
  5. Tags
    Summary

    You've been housemates with the skeleton brothers for a while now, so you like to think you're used to their shenanigans. You're unflappable. Nothing could possibly surprise you. Lo and behold, Sans manages to do the impossible, and now you're stuck dealing with his mistakes. Your house is MUCH too small to house all his cousins, and yet here you are, an unwilling guest at his "surprise family reunion". You're either going to have to find a bigger house or get used to sharing a room, but only if you manage to not kill each other first.

    Language:
    English
    Words:
    13,814
    Chapters:
    2/?
    Comments:
    16
    Kudos:
    68
    Bookmarks:
    16
    Hits:
    454
  6. Tags
    Summary

    A A-Z list of things that’ll be talked about as informative information on the sexual intimacy of characters.

     

    Curious how a character may be in bed? Come here to request a character your curious about or just see all the other characters I already have written.

     

    See how your favorite character is during intimate moments.

    Language:
    English
    Words:
    10,021
    Chapters:
    8/?
    Comments:
    7
    Kudos:
    38
    Bookmarks:
    4
    Hits:
    987
  7. Tags
    Summary

    Monster kind are now above-ground, you work hard, you don't think it's fair that a group of monsters are stuck in the same messed up world you were born in. But apparently fate is a cruel mistress because now monsters have to deal with the corruption of the surface.

    You are on the monsters side; but not everyone in your life agrees with your thinking.

    Language:
    English
    Words:
    36,769
    Chapters:
    21/?
    Comments:
    114
    Kudos:
    208
    Bookmarks:
    28
    Hits:
    3055
  8. Tags
    Summary

    Your name is unimportant. Your job is nonexistent, really. And your (ex)roommate just kicked you out in the middle of a surprisingly cold November night. But whatever. You don't care. You'll be fine.

    Keep telling yourself that as you freeze to death, idiot.

    But you'll be fine, for one reason! Two, actually. Two people - monsters really - who just so happen to have the same names as some fonts you know of? You stay with them instead, just to get back on your feet, and a single question rises to your mind.

    What the hell is keeping you here?

    Series
    Language:
    English
    Words:
    92,439
    Chapters:
    30/?
    Comments:
    391
    Kudos:
    630
    Bookmarks:
    112
    Hits:
    10528
  9. Tags
    Summary

    Your ideas always sound brilliant in your head, for some reason. Sadly, you can't see their dumbness until they blow up in your face. That's you.
    He has a peaceful life now on the surface, but humans are mostly afraid of him. He doesn't care, but sometimes he feels lonely, so he pranks everyone like there's no tomorrow. That's Sans.
    You hate pranks.
    Sans loves pranks.
    You want to be left alone.
    Sans hates loneliness.
    Then you have an idea. A brilliant idea.
    Than Sans has an idea. A brilliant idea.
    After all, it's all Sans' fault. Why won't he just go away?
    After all, it's all your fault. Why are you giving him all this attention?

    Language:
    English
    Words:
    25,982
    Chapters:
    13/?
    Collections:
    4
    Comments:
    575
    Kudos:
    639
    Bookmarks:
    102
    Hits:
    5428
  10. Tags
    Summary

    A collection of various reader-insert one-shots and what not that relate to Undertale. Chapters may or may not link to each other, I don't know.

    Language:
    English
    Words:
    3,295
    Chapters:
    8/?
    Comments:
    4
    Kudos:
    33
    Bookmarks:
    3
    Hits:
    803
  11. Tags
    Summary

    A lot of shit has happened in your life, so you used video games as a get away. It took away loads of stress and such. But of course, when you were just minding your own business, you ended up in a whole other universe, surounded by skeletons that seem all too familiar.

    How does that work out for you?

    Language:
    English
    Words:
    1,240
    Chapters:
    1/?
    Kudos:
    1
    Bookmarks:
    2
    Hits:
    9
  12. Tags
    Summary

    You don't know the exact reasons but in the recent years, your parents went from hard-working and loving to abusive and angry individuals. One day, your father goes too far and you run away in fear for your life. While living on the streets, some people decide it'd be awesome to beat you up and are stopped by an unexpected savior.

    This might just turn your life for the better.

    Language:
    English
    Words:
    19,045
    Chapters:
    5/?
    Comments:
    48
    Kudos:
    120
    Bookmarks:
    18
    Hits:
    927
  13. Tags
    Summary

    What if they weren't they only Monsters in the world, but they didn't know because of feuds among the nations especially Ebott when they trapped all their monsters in Mt. Ebott, every nation closed all relations with them in fear of their own monster population.

    Five year have past since Monsters been freed. And its been a year or so since you've been in the refuge protection program after your escape. With the money you earned you bought land for little to nothing because of rumors of being hunted, which was no where near being hunted. But hey more for you. Now you just need to build a small home away from everyone. If only you didn't get to carried away and made it way bigger than planned. You're "adviser" suddenly suggest for you to rent out the rooms when she found out. So why not might as well make the rooms useful to people who need it. What is the worse that can happen, right?

    Language:
    English
    Words:
    1,626
    Chapters:
    1/?
    Hits:
    0
  14. Tags
    Summary

    You're an angel. Quite literally. You move into the town of Ebott where monsters have lived for years now, there aren't a lot of humans. Trying to keep your secret a secret you go on in your day-to-day life and meet new friends. (Title may be changed >hah<)

    Language:
    English
    Words:
    6,468
    Chapters:
    5/?
    Comments:
    18
    Kudos:
    42
    Bookmarks:
    10
    Hits:
    415
  15. Tags
    Summary

    One day you couldn’t take it anymore and thought that the world would be better off without you, so you jumped down this massive hole in a mountain in an attempt to end your life. However, you didn’t die like you planned; either that or this was one interesting afterlife dream.

    Language:
    English
    Words:
    21,111
    Chapters:
    4/?
    Comments:
    3
    Kudos:
    6
    Bookmarks:
    3
    Hits:
    83
  16. Tags
    Summary

    What is the truth about the Manor the Sans and Papyrus variants came across?
    Can they see through what is the truth and what's an act?
    Who do they put their trust in and who should they fear?

    With ruined connections and healing wounds, can we get a happy end?

    Series
    Language:
    English
    Words:
    32,858
    Chapters:
    4/?
    Comments:
    8
    Kudos:
    19
    Bookmarks:
    8
    Hits:
    1310
  17. Tags
    Summary

    You're new around here and just trying to get by.

    You really should've known better.

    *A SWAPFELL FIC*

    Language:
    English
    Words:
    61,001
    Chapters:
    14/?
    Comments:
    762
    Kudos:
    1491
    Bookmarks:
    246
    Hits:
    13318
  18. Tags
    Summary

    Marianne had gone through a lot of bad things in her life and even after death. The last thing she ever wanted was to become an assistant to a maniac who destroys universes just for nothing.

    Without any choice but to help her new boss (Otherwise her own universe would be destroyed with her being included) she began traveling through the multiverse, taking up many roles.

    The last thing that she wanted was to encounter crazy people in those universes, but if she learned something from previous experience, what she wants is exactly what she isn't going to get.

    Now stuck in this job where every universe she goes to gets worse and worse, she begins missing her original universe, trying to find a way back to her home and break her universe free from the horrible clutches of the destroyer.

    Series
    Language:
    English
    Words:
    11,973
    Chapters:
    2/?
    Comments:
    13
    Kudos:
    11
    Bookmarks:
    3
    Hits:
    121
  19. Tags
    Summary

    You're a working maid for a house full of skeletons and to say your life has been turned up side down is to put it lightly, even though Sans hired you when you were desperate enough to beg for work, he feels extremely scared of what humans can be capable of. Would you hurt his family if he let your own starve?

    Even though you know skeletons has no bellies they surprisingly eat a lot.

    Language:
    English
    Words:
    6,139
    Chapters:
    6/10
    Comments:
    4
    Kudos:
    46
    Bookmarks:
    2
    Hits:
    746
  20. Tags
    Summary

    You lost your job, your boyfriend cheated on you with your best friend, and got kicked out of your apartment. Where do you go? A trip to the bar should help you think. Little did you know... that night changed your life forever.

    Series
    Language:
    English
    Words:
    105,987
    Chapters:
    75/?
    Comments:
    910
    Kudos:
    655
    Bookmarks:
    111
    Hits:
    16321

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