1 - 20 of 1143 Works in Original Undertale Character(s)

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  1. Tags
    Summary

    自家AU Underlibrary
    通篇流水帳,陳述設定居多
    關於地面上那些人類的故事

    *結局後
    *是二創OC的支線故事,是二創OC的支線故事,是二創OC的支線故事,原作角色佔比不多
    *怪物皆擬人
    *和原作差距挺大,異世界設定

    Language:
    中文-普通话 國語
    Words:
    3,501
    Chapters:
    2/?
    Hits:
    13
  2. 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:
    93,988
    Chapters:
    23/?
    Comments:
    141
    Kudos:
    127
    Bookmarks:
    31
    Hits:
    2128
  3. Tags
    Summary

    There's an old saying that you only get one life, and the consequences will follow.

    One upon a time there were two races: humans and monsters. After hundreds of years of being trapped, the final human falls down the mountain and discovers they have the ability to reset. After getting bored of the usual pacifistic route they decide to commit mass genocide. Follow Frisk on an adventure as they learn how to mend what they have broken for the monsters. Along with the consequences of their actions.

    Language:
    English
    Words:
    2,052
    Chapters:
    4/?
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    8
  4. Tags
    Summary

    Follow Stella as she learns more about the Keyblade Wielder who gave everything for millions of others.

    Series
    Language:
    English
    Words:
    3,192
    Chapters:
    5/?
    Comments:
    2
    Kudos:
    5
    Bookmarks:
    1
    Hits:
    95
  5. Tags
    Summary

    Ever since the War, magic humans have been training to kill all monsters when they escape. They've even built a special school designed for teaching young magic people how to use their powers for destruction.

    Y/N was a magic person, born of non-magic parents. But Y/N is not a vicious person and does not want to hurt anyone, and is ridiculed because of this. Feeling worthless and broken, Y/N decides that if she can't follow her chosen purpose, she's better off dead.

    But she finds a new world to call home.

    Series
    Language:
    English
    Words:
    103,895
    Chapters:
    38/38
    Comments:
    9
    Kudos:
    71
    Bookmarks:
    14
    Hits:
    1678
  6. Tags
    Summary

    A collection of spring/summer drabbles in the Nightlights universe.

    Series
    Language:
    English
    Words:
    8,450
    Chapters:
    4/?
    Comments:
    5
    Kudos:
    22
    Bookmarks:
    3
    Hits:
    226
  7. Tags
    Summary

    A science experiment created by humans (Y/n) Knows little of her own kind, and little of the world from hiding with her human family. When the barrier breaks and monsters integrate with society (Y/n) sees this as her chance to have a normal life. When she finally sees another skeleton who's to say what may happen?

    Language:
    English
    Words:
    44,785
    Chapters:
    21/?
    Comments:
    166
    Kudos:
    511
    Bookmarks:
    106
    Hits:
    10681
  8. 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:
    696,287
    Chapters:
    67/?
    Comments:
    381
    Kudos:
    241
    Bookmarks:
    15
    Hits:
    11361
  9. Tags
    Summary

    Oh, you could have picked anyone as the object of your affection. But anyone wasn’t good enough, was it? No, of course not, because the heart wants what the heart wants.

    Your heart, in all its infinite wisdom, has decided it wants the misanthropic sibling of monsterkind’s crown prince. Let it never be said you’re not up for a challenge.

    adult!Chara x fem reader

    Language:
    English
    Words:
    63,973
    Chapters:
    14/?
    Comments:
    47
    Kudos:
    58
    Bookmarks:
    10
    Hits:
    1081
  10. Tags
    Summary

    "It's you...?" questioned Asgore, unsure if his eyes were deceiving him. "It was always you? All of it?"

    "All of it." answered the Black Mage giddily. "The children, the Barrier, this... this ordeal," Cadecus cackled. "revenge! You took something of mine, so I take all of yours."

    Around Asgore, the slowly dusting bodies of his family decomposed, returning to the dirt of the Valley as the Black Mage approached him, reaching out for the King. His spindly fingers stretched out, wrapping around the King's thick neck as best as possible. His devilish smile sent a shiver down the broken King's spine.

    "Hey," the Judge called. Cadecus slowly turned toward the human, face shifting in his annoyance, and his grip tightened ever so slightly. The first blast of lightning from the Judge's fingers took Cadecus's arm clean off. The Black Mage simply glanced down at his stub, face never changing. "Forget about us?"

    Behind the Judge, the other members of the Row readied their weapons. The Black Mage squeezed as hard as he could, a delicious crack resounding as the King of Monsters fell to dust. He turned to face the mages. Frisk stepped forward.

    “Ah,” Cadecus patted himself down. “This should be good.”

    Series
    Language:
    English
    Words:
    6,605
    Chapters:
    3/?
    Hits:
    32
  11. Tags
    Summary

    If someone had told the Bad Sanses a week ago that they would not only have an unwanted vacation but would also have turned into children, they would have dusted them off without hesitation. But now? They just wonder who they pissed off to endure this fate.

    Or:

    Nightmares gang gets the right body for their behavior and is delighted with a terrible babysitter.

    Series
    Language:
    English
    Words:
    23,735
    Chapters:
    8/?
    Comments:
    64
    Kudos:
    192
    Bookmarks:
    51
    Hits:
    2448
  12. Tags
    Summary

    Your inability to die has led to a millenia-long life of nihilism and guilt. You do your best to record everything, but it's not enough. Humans aren't supposed to live this long, and your constantly failing memory is testament to that. You can't keep doing this. You don't even know why.

    You leave yet another city and, on a whim, you climb a mountain.

    You find a strange pit.

    … You jump.

    You don't die, of course. But, with what you find, maybe you can finally live again.

    Series
    Language:
    English
    Words:
    4,229
    Chapters:
    3/?
    Comments:
    2
    Kudos:
    11
    Bookmarks:
    4
    Hits:
    73
  13. Tags
    Summary

    There are good days, and then there are days that.... aren't. Nozomi knows these a little too well. But maybe even these days have a purpose, if the arrival of some new friends has anything to say about it.

     

    "You don't get it! You don't understand how hard it is to get up every day and just breathe! You have no clue what I'm going through so STOP CARING!"

    Their outburst had no effect on the skeleton, who leaned against the wall, picture complete with half-lidded eyes and a lazy smile. "Don't I?"

     

    Formerly the mess that was Bad Day (the old version), I bring you an angsty, self-indulgent fic. I hope you enjoy this as much as I enjoyed making it! Updates every two weeks (roughly), feel free to yell at me if not.

    Language:
    English
    Words:
    32,179
    Chapters:
    13/21
    Comments:
    53
    Kudos:
    32
    Bookmarks:
    7
    Hits:
    760
  14. Tags
    Summary

    A story following Papyrus and Sans as children and just prior to the game. Features older sibling Chara, older brother Asriel, and more.

    Language:
    English
    Words:
    30,028
    Chapters:
    22/?
    Comments:
    95
    Kudos:
    195
    Bookmarks:
    24
    Hits:
    3440
  15. Tags
    Summary

    Lust Sans has never been very proud of his AU which is often harshly judged by his fellow San's & Papyrus's. Finally they've reached the happy ending and no more resets, but what excites him even more is now that there's no longer a need for the 'heat injections' he can ask Grillby to officially be his date-mate! Unfortunately it doesn't go as planned and Sans is heartbroken.

    Papyrus and the others convince Sans to come join them at Muffet's new Club/Restaurant named 'Sweets & Treats'. There Sans meets an attractive human male server who offers to be his friend, everything seems like it's looking up but there is something strange about this human...why does he smell like a female?

    (I feel like Underlust is a bit under apricated because of its content, the idea that other AU's look at it differently to is kind of sad. The MC is an original character I created inspired partly by my character in Violentale. There will be a lot of various sexual and potentially triggering content I will try to mark chapters with a * if there is intense sexual content or possibly triggering material in the chapter.)

    ENJOY~

    Language:
    English
    Words:
    4,201
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    9
    Bookmarks:
    6
    Hits:
    95
  16. Tags
    Summary

    What if, when the monsters ascended, they came out into our world? We have the game and all of the fanfics and AUs. What if we also have something much older? What if we have an account of when they were forced underground? What if we know them, and have been waiting?

    Well, some of us have at least. Most of humanity has forgotten about about the older texts. Now there is is a top secret organization that is watching the exit and waiting.

    What if you were a part of that organization? What then?

    Language:
    English
    Words:
    11,851
    Chapters:
    10/?
    Comments:
    13
    Kudos:
    71
    Bookmarks:
    15
    Hits:
    787
  17. Tags
    Summary

    Papyrus is gentle and kind-hearted, yet loud and lively, almost totally innocent of the woes of the world. At least that’s what most people think. In reality, he is underestimated and infantilized by his family and even his own brother, who refuses to reveal the secrets of their past to him. Increasingly depressed by the actions of his peers, Papyrus turns to drugs to get away from it all.

    Mettaton is glamorous and egotistical, yet loving and generous, assumed by fans to be untroubled both in and out of the spotlight. However, he too is plagued by a dark past–including the worst possible betrayal by a close friend. All in all, the abuse he’s suffered has left him craving for love in the worst of places... so he's given his heart to the very man who shattered it.

    When Papyrus and Mettaton meet, sparks fly, and they begin to find in each other the love and respect they’ve needed all along. There’s only one thing standing in the way of true love, and that’s the walls they’ve built around their own hearts. Can they knock them down in time to save themselves and each other from the demons within and without?

    (PLEASE see beginning note for trigger warnings and other information.)

    Language:
    English
    Words:
    148,280
    Chapters:
    44/?
    Collections:
    1
    Comments:
    293
    Kudos:
    443
    Bookmarks:
    44
    Hits:
    8134
  18. Tags
    Summary

    You did not remember your old life, but you knew certain things like muscle memory, cooking, cleaning, gardening. Those came easily..and somehow despite everything your head was filled with the knowledge of plants, how could someone forget their name but remember the name and meaning of every flower?
    You sighed, baffled and threw a green cowl on over your cream coloured dress, breathing in the fresh forest air.

    You are a skeleton and are just trying to get by, you make some friends along the way but your past has a way of coming back to haunt you.....

     

    Even if you don't remember it.

    Language:
    English
    Words:
    5,721
    Chapters:
    2/?
    Comments:
    30
    Kudos:
    105
    Bookmarks:
    28
    Hits:
    562
  19. Tags
    Summary

    Second verse, more detailed than the first.

    Language:
    English
    Words:
    27,370
    Chapters:
    9/?
    Comments:
    29
    Kudos:
    691
    Bookmarks:
    74
    Hits:
    22313
  20. 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:
    602,185
    Chapters:
    64/90
    Comments:
    1116
    Kudos:
    320
    Bookmarks:
    49
    Hits:
    13843

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