1 - 20 of 887 Works in Original Undertale Character(s)

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  1. Tags
    Summary

    An old professor of yours always said insanity was doing the same thing over and over and expecting a different result. You'd been trying not to think about it for seven years. Still, you pulled out your hair in clumps and slept with furniture pressed against the door. In a last ditch attempt to not be useless, you threw yourself into your university work, and by dumb luck found a subject that interested you and a lab partner who didn't care you slept in the office four nights of the week.

    A bachelors and a masters later, a letter comes in the post offering a research opportunity and a chance to shed your old skin. Looking to disappear, you accept, but what's done in the dark will always be brought into the light eventually.

    Whether you're ready or not is a completely different question.

    Language:
    English
    Words:
    86,513
    Chapters:
    22/?
    Comments:
    134
    Kudos:
    114
    Bookmarks:
    27
    Hits:
    1578
  2. Tags
    Summary

    Sans aka Cooler is a normal College student. Papyrus is a spoiled, pampered kid. Their paths should have never crossed. However, Sans needs volunteer credit towards his degree. So, when signing up for The Big Brother Program, he gets assigned to Papyrus. Will Sans be able to handle Papyrus, or will he be at his wits end? Only time will tell.

    Language:
    English
    Words:
    46,168
    Chapters:
    12/12
    Kudos:
    1
    Bookmarks:
    1
    Hits:
    24
  3. Tags
    Summary

    Read To Find Out!

    Features Otherkin and Monsters!
    Humans and mages!

    Magics galore!

    Language:
    English
    Words:
    825
    Chapters:
    1/1
    Kudos:
    1
    Hits:
    1
  4. Tags
    Summary

    You are Rosemary Romero, or Cherri. You human, well partially. You've just moved to Ebott City for a scholarship you've earned! You don't have much money, but you managed to get a job to provide for your siblings! On the way you meet a strange monster who easily finds out about your secret. Will he help you? Or will he betray?

    Inspired by
    "A 'Human' that Likes a Skeleton" by Krayzee_Tree (Wattpad) and
    "Sooner or Later You're Gonna be Mine" by Staringback (Archive of our own)

    Language:
    English
    Words:
    1,389
    Chapters:
    1/?
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    19
  5. Tags
    Summary

    Monsters have returned to the surface, and with it, a whole new host of problems.

     The human mages are making a comeback, too. The monsters seem to have triggered something in the SOULs of certain humans.

     Of course, one of those humans just had to be you.

     Now, you are faced with a world of oppression. A world where you are punished for the sins of your ancestors. A world where your kind is spat on.

     It’s just your luck, to face all of this, on top of war, PTSD, personal problems, and memory loss.

     To top it all off, it seems you’ve managed to slip under the government’s radar, and have to discover what really happened to you, on your own.

     But, maybe, with the help of two skeletons, it won’t be as painful to navigate through your trauma and look for a future.

    Language:
    English
    Words:
    20,477
    Chapters:
    9/?
    Comments:
    40
    Kudos:
    94
    Bookmarks:
    26
    Hits:
    1080
  6. Tags
    Summary

    Axe had grown accustom to the scrum that littered the earth. Living among them after being freed was far from the happy ending his brother was hoping. Far from it. None of the humans seemed to care much for one another- much less monster kind. So it came to a surprise when he finds an old lady calling him son. He barely has time to speak before he gets wrapped into helping her get around town. The entire town doesn't have the heart to tell her the truth because its the happiest she's been since her husband passed away.
    A story of change and acceptance. Your family doesn't matter as long as you see them as your own.

    Language:
    English
    Words:
    6,747
    Chapters:
    2/?
    Comments:
    4
    Kudos:
    15
    Hits:
    84
  7. Tags
    Summary

    Nightmare isn’t used to asking for help, it’s not like he’s ever received it when he had asked; but his crew is hurting and dying, and when backed into a corner he’ll do whatever it takes.

    Sans and his mages haven’t really signed up for this crap, until they do.

    Series
    Language:
    English
    Words:
    132,103
    Chapters:
    16/50
    Comments:
    205
    Kudos:
    93
    Bookmarks:
    15
    Hits:
    2147
  8. Tags
    Summary

    Everyone deserves a happy ending, so Frisk goes back into the underground to bring back everyone's favourite grumpy flower. Features soul-baring conversations, post-pacifist politics, and the constant looming threat of everything everyone worked so hard for being erased. Fun!

    Language:
    English
    Words:
    39,644
    Chapters:
    12/?
    Comments:
    32
    Kudos:
    36
    Bookmarks:
    6
    Hits:
    775
  9. Tags
    Summary

    "At a glance we both were falling for this world, enchanted by its light. Could this be the place we finally belong?"

    Five years have passed since the barrier fell and monsterkind ascended to the surface to begin new lives. The presumptive heir to the throne, Ambassador Frisk Dreemurr, has found themself on the cusp of a hard-fought peace between humans and monsters. However, when two secretive organizations rise from the shadows, one determined to send monsters back underground and the other dedicated to reviving the lost scientist Gaster, they begin to threaten the order of an already fragile world. With their lives suddenly thrown into chaos, The Kingdom of Monsters faces the greatest challenges of its short existence. Can Frisk, Chara, and their chosen family protect their future and save the people they love while not losing themselves to the darkness?

    This is a story about those who commit to change and sometimes fall short. But this is also a story about those who get back up again. Tags to be updated as the story progresses.

    This arc: Flowey lures the Undergang back to Mt. Ebott to save the king and queen from an unknown threat, but they find much more than they ever anticipated.

    Language:
    English
    Words:
    70,573
    Chapters:
    14/?
    Comments:
    25
    Kudos:
    57
    Bookmarks:
    6
    Hits:
    1032
  10. Tags
    Summary

    How the gaster family came to be and how they fell

    Language:
    English
    Words:
    5,553
    Chapters:
    21/21
    Collections:
    1
    Comments:
    1
    Kudos:
    8
    Bookmarks:
    2
    Hits:
    163
  11. Tags
    Summary

    Life has its fair share of experiences that leaves someone crumbled to the floor in misery. Thankfully, you never had a rough life, leading a life of creativity with the support of your friends and family. Now, in Poughkeepsie, New York, you balance a stressful life of work and school. Maybe your monster friends can help with that. Wait why is that skeleton holding your hand?

    [A classic Sans x Reader x Papyrus. This will be fun. Also, I don't have a consistent posting schedule so you may get a chapter at 4 in the morning, who knows :)]

    Language:
    English
    Words:
    40,894
    Chapters:
    18/?
    Comments:
    28
    Kudos:
    38
    Bookmarks:
    4
    Hits:
    479
  12. Tags
    Summary

    It was easy to convince the King to grant him access to the five Human SOULs, promising through his work an alternate method to breaking the barrier. Who was he to deny him? The Royal Scientist had already made miracles happen, so why not another?

    The hard part, however, was to not get attached.

    And that was much, much, easier said than done.


    You wake up from nonexistence, finding yourself in a creepy, unpleasantly smelling laboratory with seemingly no way out. You’re lost, nonplussed and have no idea how and why you came to be. But perhaps that skeleton man from earlier can help you find some answers...

    Well, only if he decides to stop being so infuriatingly mysterious all the time.

    Language:
    English
    Words:
    21,441
    Chapters:
    7/?
    Comments:
    16
    Kudos:
    26
    Bookmarks:
    6
    Hits:
    227
  13. Tags
    Summary

    Stella Bennett has always been the one in the spotlight. Afterall, who wouldn't want to know her?
    She was unnaturally pretty, with long golden locks and rare but beautiful jade green eyes, and never bragged about it. Amazing singer, flawless dancer, talented cheerleader, a fantastic person. She seems so sweet and humble...

    But that isn't how I see it. I know that pretty face hides a manipulative and dangerous woman who only does things to get what she wants, and she DOES get what she wants.

    I gave up a long time ago trying to tell others that. No one believes the mousey little sister Riley, the pudgy nerd who sits alone in the library. People laugh when they see me. That girl, sister to Stella? Poor Stella, it must be awful having THAT as a younger sister.

    Both Stella and I are out of high school now. Stella is an up and coming singer and social media star living with 8 rich monster boyfriends, and me, juggling online college and my job as a librarian in a tiny cramped apartment with my fat little dog named Bean. Even though I’m struggling to stay a float, anything is better than living with my sister and her harem.

    But I never get what I want, do I?

    Language:
    English
    Words:
    13,486
    Chapters:
    7/?
    Comments:
    45
    Kudos:
    183
    Bookmarks:
    38
    Hits:
    2435
  14. Tags
    Summary

    DIRECT SEQUEL/EPILOGUE TO “PATCHWORK SOUL” — 3 months later. A family of monsters and their little human kid try to start life anew beyond the confines of a giant mountain. Maybe they find something. Maybe they lose something. Time flows ever onwards, but sometimes it goes sideways, and it's heavier than they thought.

    [Please read PATCHWORK SOUL, know all major canon timelines, and the music of Undertale before reading for the best experience.]

    [An extended AU of what happens after a specific time kid's True Pacifist ending.]

    Series
    Language:
    English
    Words:
    437,887
    Chapters:
    44/?
    Comments:
    132
    Kudos:
    140
    Bookmarks:
    8
    Hits:
    2859
  15. Tags
    Summary

    King Asgore made a vow to kill any human that fell Underground, a decision fueled by grief and despair.

    In one reality, it's a promise he's unable to keep.

    Series
    Language:
    English
    Words:
    48,564
    Chapters:
    86/?
    Comments:
    445
    Kudos:
    88
    Bookmarks:
    14
    Hits:
    2296
  16. Tags
    Summary

    You wake up, and you don't know where you are. You don't know who you are, or why you're here. You don't know these people...

    And you most certainly don't know who he is.

    There is one thing you do remember, though; and only one thought is clear in your mind:

    Above all else,

    you need to find your sister.

    Language:
    English
    Words:
    31,811
    Chapters:
    25/?
    Comments:
    222
    Kudos:
    149
    Bookmarks:
    28
    Hits:
    3042
  17. Tags
    Summary

    In this story, you will get to read about the sexual escapades and trials/tribulations between StormXros and his beautiful wife Sapphire as they go through many, many hardships together. Including but not limited to; Sapphires' sexual flare-ups, Magical mishaps, Kidnappings, Xros's job, but worst of all; getting up on some kind of time, truly the scariest threat of mankind! Numerous characters will be introduced to them in their day-to-day life and they may join in on the fun. We'll suck, fuck, bite, fight, laugh and cry during this crazy, noisy adventure of ours! Note: Some of the tags may solely be for the referencing purposes but I might include a character or two from a different franchise if you want me to/ if I feel like it. I am serious about having some other folks show up so just bear with me when I say those tags aren't entirely for show.

    Broke 4200 hits! Glad there are so many horny folks around these parts. Thx! On principle, I must say... Nice!
    Damn it I missed the double 69's!
    Sponsored by MILF, it does the body good!

    Language:
    English
    Words:
    317,296
    Chapters:
    9/?
    Comments:
    2
    Kudos:
    16
    Bookmarks:
    4
    Hits:
    12735
  18. Tags
    Summary

    The Spring of 1920 is upon the world. Powerful mafia families lord over The Big City and one little dancer finds herself caught in the middle of it, trapped by nefarious forces, intrigue, murderous plots, and one skeleton who can't seem to let her go.

    Series
    Language:
    English
    Words:
    46,718
    Chapters:
    14/?
    Comments:
    28
    Kudos:
    52
    Bookmarks:
    10
    Hits:
    955
  19. Tags
    Summary

    Cross was not having any luck with the current fight. Angered, cross steals something from both ink and shattered!dream. Little do they know, they will get back what cross stole.....just not how they expected.

    Language:
    English
    Words:
    22,406
    Chapters:
    17/17
    Comments:
    4
    Kudos:
    13
    Bookmarks:
    5
    Hits:
    220
  20. Tags
    Summary

    You had been raised to be a hero, to defend humanity against monsters if they should ever show, but when they do-there's no need for heroes and no need for you.

    Years later you get summoned by your old boss to help with a problem that threatens the peace between monster and human kind. Someone you knew is tearing apart the fabric of reality and bringing boss monsters from alternative worlds to yours. You need to team up with the monster mascot and his boss brother plus their softer, alternative versions to track down the new arrivals and...make nice. But is that all?

    Months (and a few skeleton brothers) later you've tasted the delights of domesticity and are willing to believe it might be for you. Maybe the world isn't as in need of saving as you were once led to believe. Maybe, this time around you can be happy.

     

    Or maybe not.
     

    Weekly Updates

    Language:
    English
    Words:
    238,062
    Chapters:
    47/?
    Comments:
    840
    Kudos:
    807
    Bookmarks:
    179
    Hits:
    17126

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