1 - 20 of 1342 Works in Original Undertale Character(s)

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  1. Tags
    Summary

    This includes undertale characters as well as other alternative universes. These were made on Tumblr and I decided to share here as well

    Language:
    English
    Words:
    4,646
    Chapters:
    8/?
    Kudos:
    3
    Hits:
    68
  2. 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:
    885,407
    Chapters:
    87/116
    Comments:
    1529
    Kudos:
    433
    Bookmarks:
    73
    Hits:
    22442
  3. Tags
    Summary

    Frisk and Susie are left reeling from their adventures in the Dark World, but there's no time to take a deep breath. As the Knight blows another fountain open, Frisk and Susie, along with little sister Tina, Berdly and Noelle, must seal it and stop an "evil" queen from taking over. And who is the man beckoning from Frisk's dreams, the one who speaks in hands?

    Series
    Language:
    English
    Words:
    16,898
    Chapters:
    3/?
    Comments:
    23
    Kudos:
    14
    Bookmarks:
    3
    Hits:
    274
  4. Tags
    Summary

    In a universe filled with so many possibilities, you come to realize that life hates you, and your only chance of getting out of it alive, is to accept fate, and just roll with the punches. However, with that in mind, you thought having a soulmate was for suckers, and refused to give in to the scam. But as previously mentioned, the universe hates you, so why not have more than one soulmate they said.

    (Just a bunch of soulmate au's I've thrown together. This is supposed to be fun.)

    Language:
    English
    Words:
    32,556
    Chapters:
    5/25
    Comments:
    43
    Kudos:
    239
    Bookmarks:
    56
    Hits:
    3024
  5. Tags
    Summary

    You may know this song and dance by now, the stories where a creator gets dropped into the Undertale multiverse and makes some skeletal friends.

    More than a few stories exist where a creator is dropped into a 'skeletons stuck in a certain world' scenario.

    Fewer still are the tales of creators becoming skeletons themselves.
    ___

    I joined the Undertale fandom a long time ago, but when I started writing down some ideas I had, I never would have expected joining it to be meant in a literal sense, and I definitely would not have expected my sibling to join me on our adventure.
    Now rated T for certain topics inherent when talking about some sleletons' backstories

    Language:
    English
    Words:
    34,794
    Chapters:
    11/?
    Comments:
    80
    Kudos:
    285
    Bookmarks:
    79
    Hits:
    5865
  6. Tags
    Summary

    Papyrus is a traitor to the underground as well as his brother, you trusted him, you were angry at him. After the monster broke the barrier and the war against humans began.

    Sans was messing with machine again with his alternate universe selfs, he was THIS close on finally fixing it till it malfunction and explodes... Again.

    Causing non-skeleton monster to arrive.

    Language:
    English
    Words:
    614
    Chapters:
    2/?
    Comments:
    3
    Kudos:
    1
    Bookmarks:
    1
    Hits:
    87
  7. Tags
    Summary

    Sci: H-hello! I'm sci, I am an scientist who has finally got me and my father's interdimensionall communication machine, or IDCM for short, to work! I had gathered friend, allies and enemy alike to be here! so don't be shy to ask questions!

    This is a AU sans ask fic, don't be shy to ask things!

    To send an Ask just leave a comment!

    Language:
    English
    Words:
    1,758
    Chapters:
    7/?
    Comments:
    9
    Kudos:
    8
    Hits:
    91
  8. Tags
    Summary

    This story is currently under major editing until the first chapter comes out, all tags are currently temporary.

    When two young experiments decide that they want their freedom a strange turn of events puts a stop to their plans. The two wake up in a reality that is not their own, but they are completely unaware. All they know is that right before they could get their highly desired freedom they ended up in the woods in the middle of nowhere, but surprise surprise, the woods they found themselves in belong to a certain group of skeletons. What will happen when the skeletons find the two hybrids hiding away on their property? Will they be welcomed or turned away? What will happen to the pair, and how will they adapt to their new environment? I think it's high time we find out.

    Language:
    English
    Words:
    6,524
    Chapters:
    4/?
    Kudos:
    10
    Bookmarks:
    1
    Hits:
    107
  9. Tags
    Summary

    May is trying to make her way through life undisturbed but with an unwanted ability to feel all emotions around her, she finds it impossible. Or so she thought before she met a certain skeleton that turns her life upside down.

    Language:
    English
    Words:
    167,036
    Chapters:
    31/95
    Comments:
    215
    Kudos:
    329
    Bookmarks:
    67
    Hits:
    8530
  10. Tags
    Summary

    Red didn't expect Sans's apprenticeship to lead to so many opportunities for conversation. He's definitely not complaining, though - he's learned more about Sans sitting in a sentry station than he ever expected to.

    The skeletons had been given many good things. Several opportunities for peace.
    Of course they couldn't last.

    Series
    Language:
    English
    Words:
    29,024
    Chapters:
    7/7
    Comments:
    16
    Kudos:
    66
    Bookmarks:
    5
    Hits:
    682
  11. Tags
    Summary

    The ancient japanese tale dictates that every person is born with an invisible line conecting them to their soulmate. Sooner or later, they are destined to meet, no matter how far apart they live or how much their life circumstances differ. And, when it happens - that encounter is certain to profoundly affect both of them. The strings can sometimes stretch and become tangled, which could postpone the fateful meeting. But - those ties will never be broken.

    Beatrice (or "Bee", as she was normally called), singed in the bars of her city corrupted by caos. Desperate to escape the violence of the city, there was not much holding her back, aside from her estimate kitten, Ilya, and her two best friends, Michael and Inanna. That is...until she met him.

    Despite her effords to escape, life kept leading her back to him again, and again, and again.

    After all, isn't that how the Red String works?

    Language:
    English
    Words:
    33,471
    Chapters:
    5/?
    Collections:
    1
    Comments:
    12
    Kudos:
    27
    Bookmarks:
    5
    Hits:
    334
  12. Tags
    Summary

    It was October of 2018, the eve of Halloween. Chris saw the mysterious posts on the Undertale Twitter account, and debated over replaying a game they hadn't touched in over three years - Undertale. What else could they have left to learn from such a game, they thought. But their wonderings and ruminations only ended up leading to the rediscovery of an uncertain past.

    Language:
    English
    Words:
    1,106
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    2
    Hits:
    11
  13. Tags
    Summary

    You were human once.
    Or, so was what the doctors told you.

    You wake to the world in a hospital bed with absolutely no memories about yourself and a body that is yours, but also not. Not your original, that is. While the authorities try to uncover what happened to you, the only survivor, you are left with next to nothing but the possibility to rebuild your life from scratch as a skeleton monster with a human soul.

    To ensure your safety while your unknown perpetrators are being hunted down, you are placed within a home containing an almost worrying amount of skeletons with varying personalities. Naturally, your life bursts into color and chaos as you try to navigate your days with your new roommates, but you seem to handle it well enough. Even if there are too many secrets lurking about.

    You wonder constantly – who are you?

    Language:
    English
    Words:
    38,329
    Chapters:
    5/?
    Comments:
    165
    Kudos:
    380
    Bookmarks:
    108
    Hits:
    4042
  14. Tags
    Summary

    Frisk did it. He killed everyone he knew and loved. Everyone was either dust or in hiding, thanks to him. When all was said and done, he traded his SOUL, the very culmination of his being, to bring back the world.

    But there was an interference with the trade.

    Will Frisk be able to complete this new timeline, even when cut off from the RESET?... Even when he is no longer human, but a skeleton instead?

    Arc I - Nameless: Chapters 1 - 21
    Arc II - Knowledge: Chapters 22 - 42
    Arc III - Evacuation: Chapters 43 -??

    Language:
    English
    Words:
    85,842
    Chapters:
    60/?
    Comments:
    40
    Kudos:
    220
    Bookmarks:
    33
    Hits:
    5472
  15. Tags
    Summary

    According to Legend, Monster souls are Made out of Love and Magic.
    Human Souls are far more Determined, therefore they do not require these things.
    This is the Story of a Monster who Fell Underground and Learns what it means to be Human.

    Language:
    English
    Words:
    368,904
    Chapters:
    44/100
    Comments:
    59
    Kudos:
    23
    Bookmarks:
    4
    Hits:
    1666
  16. Tags
    Summary

    Well, this is a case. Your a collage student stuck in a house with 9 other roommate who hate your guts, the only thing that could make this worse is if they found out you were non-binary, and babysitting the worse ‘kids’ in the world. Well it could be worse. They never also figured out your not from their au. That you were working with some guy you never got the name of to make a machine to take you back home.

    Language:
    English
    Words:
    3,002
    Chapters:
    4/?
    Comments:
    15
    Kudos:
    31
    Bookmarks:
    3
    Hits:
    259
  17. Tags
    Summary

    After defeat in the War, monsters were trapped Underneath the Mountain and never expected to be above ground ever again. But little humans knew that weapons that they created to fight against monsters, would later be used by same monsters.

    After years of imprisonment, monsters adapted to the weapon and started forming alliance for other monsters to became special forces under Undyne's command. Skeleton brothers became a recruits and to achieve their goal to became royal guards, as they should tame and contain the dangerous artifacts that wants nothing but violence, vengeance against them. They won't hesitate to use full force. But they joined alliance, they came in contact with a strange weapon that didn't seems too hostile towards them, on contrary... it's... quite friendly?

    But something isn't right... feeling of being watched all the time doesn't wear off, it rather... became more permanent than usual.

    Language:
    English
    Words:
    13,641
    Chapters:
    4/?
    Kudos:
    6
    Bookmarks:
    1
    Hits:
    71
  18. Tags
    Summary

    What would happen if the six human souls that were used to break the barrier ended up reviving themselves and returning to the surface with no memories of what transpired underground. They went on blissfully for many years.... until the truth of what happened finally comes out. Now the humans whom were killed are looking for answers. Though the biggest question from everyone is after they find out the answers.... what will they want?

    Language:
    English
    Words:
    5,943
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    57
  19. Tags
    Summary

    Originally, you thought moving away into a new house seemed like the best idea, hours from your problems where nothing can happen. It May have seemed like a good idea at the time but the situation is more deceiving that it seems . . . . . . and that kind of that mistake will cost you, for something disturbing is watching you through every window, and it something that's never going to let you go.

     

    Sidenote: Please do NOT Copyright my work. I've worked really hard on this book and the others that r also currently bring written. So please have the respect for it

    Language:
    English
    Words:
    7,732
    Chapters:
    6/?
    Comments:
    6
    Kudos:
    16
    Bookmarks:
    2
    Hits:
    425
  20. Tags
    Summary

    Ever wonder why Sans and Papyrus never had their parents appear in their lives? Everyone else always wondered that. But there was a war, plenty of parents died during it. So did theirs. Right?

    They're back, and they can't wait to see their two sons and protect them from the world. It's a dangerous place out there, especially with murders going around.

    Papyrus is just happy to meet his parents.

    Sans really wants them to leave.

    And why won't they let anyone see what's in their basement?

    (Fontcest warning!)

    Language:
    English
    Words:
    63,421
    Chapters:
    25/?
    Comments:
    180
    Kudos:
    131
    Bookmarks:
    23
    Hits:
    4349

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