1 - 20 of 4200 Works in W. D. Gaster

Pages Navigation

Listing Works

  1. Tags
    Summary

    My first time doing Kinktober. Oh boy. Rest assured, this will not be organized. I'm flying by the seat of my pants, as usual.

    Language:
    English
    Words:
    25,021
    Chapters:
    13/31
    Comments:
    185
    Kudos:
    231
    Bookmarks:
    32
    Hits:
    5661
  2. Tags
    Summary

    This story is set after the True Pacifist Ending is achieved, where all the monsters now live on the surface--keep in mind, this is NOT Delta Rune.

    Language:
    English
    Words:
    1,244
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    9
  3. Tags
    Summary

    Red never makes the decision to leave. Gaster's experimentations take a sickening twisted turn, and Red slowly gives in. He still fights, but he can't escape. Not anymore.

    (A dark version of Create Your Own Future, in which Red decides NOT to leave as Gaster kind of...fucks that out of him ;) )

    Series
    Language:
    English
    Words:
    17,867
    Chapters:
    10/?
    Comments:
    16
    Kudos:
    8
    Bookmarks:
    2
    Hits:
    324
  4. Tags
    Summary

    Daily oneshots to coincide with this year's Inktober prompts.

    Day 13 Summary: One could say he's burning both ends of the candle, blind to his own self destruction. Pre-Canon. Grillster.

    Oneshot Collection | Mixed Genera | Multiship

    Language:
    English
    Words:
    9,083
    Chapters:
    14/?
    Comments:
    78
    Kudos:
    57
    Bookmarks:
    2
    Hits:
    688
  5. Tags
    Summary

    A fic about a human with dragon wings who steps into the Underground and gets transformed into a lizardman by the Barrier. He soon discoveres that there is more to the mountain than he thought, and that his soul is not entirely what he used to think it is.
    (Deltarune chapter 1 kicks in later, and is a big part of the plot. If you're reading this after the full version has been released, please forget everything you've seen in chapter 2 and further.)

    Language:
    English
    Words:
    43,506
    Chapters:
    47/?
    Comments:
    49
    Kudos:
    50
    Hits:
    632
  6. Tags
    Summary

    Red appears in a strange world unlike his. Everyone says hi to him, everyone worries about him...and he can see the sun!! What was going on?

    It didn't matter. What mattered to him was keeping far away from Gaster...and keeping his baby safe.

    (A story that just wouldn't leave me alone, so I'm back, again, here, right now. Will include very much explicit sex scenes at later dates, and I'll put warnings up)

    Series
    Language:
    English
    Words:
    61,295
    Chapters:
    35/?
    Comments:
    218
    Kudos:
    87
    Bookmarks:
    11
    Hits:
    1318
  7. Tags
    Summary

    Looking off into the sunset, Frisk smiled and remembered all the good moments they had lived in these last few timelines. Having done 23 resets, the small human settled to live in a pacifist timeline with their friends.

    And although no more resets would occur, their journey was far from over yet.

    Secrets long hidden were soon to be revealed.

    Language:
    English
    Words:
    5,380
    Chapters:
    5/?
    Comments:
    4
    Kudos:
    8
    Bookmarks:
    2
    Hits:
    147
  8. Tags
    Summary

    Gaster fights in the war and loses everything he loves. He becomes desperate to free the Underground and get revenge on humanity but that soon changes when an experiment takes a turn Gaster didn't expect, now he has a child to look after...

    Language:
    English
    Words:
    8,766
    Chapters:
    2/?
    Comments:
    1
    Kudos:
    12
    Bookmarks:
    2
    Hits:
    92
  9. Tags
    Summary

    Read

    Language:
    English
    Words:
    1,155
    Chapters:
    1/?
    Kudos:
    4
    Hits:
    142
  10. Tags
    Summary

    Day Twelve
    Prompt: Forced Chastity
    Pairing: Mobtale!Gaster/Underfell!Papyrus

    Series
    Language:
    English
    Words:
    1,923
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    6
    Bookmarks:
    1
    Hits:
    113
  11. Tags
    Summary

    Fighting boredom by daylight at work and playing music with your band at midnight you make a small living in the small town of Ebott working at one of the local vet clinics. Since monster kind reappearance to the world above you have met many monsters in your line of work, but one day you happen to tend to their ambassador's new puppy at work. Thanks to the Frisk's colorful group friends you are for sure never going to be bored again, including with the short skeleton running a muck of your life!

    Language:
    English
    Words:
    39,772
    Chapters:
    3/?
    Comments:
    19
    Kudos:
    44
    Bookmarks:
    10
    Hits:
    457
  12. Tags
    Summary

    After many hardships and loses the Knight, otherwise known as Little Ghost, with the help of Grimmchild, has finally defeated the pantheon of Hallownest, ended Radiance's infection, and ascended. However, one simple action, giving a beautiful pale flower to a large bug, has left Grimmchild and their parent trapped in infinite darkness.

    Grimmchild is freed with the help of Ghost turned Shade, but they vow to go back and free their parent as well. But it might be a little difficult as they have to deal with a child playing at being a vessel, two or three? skeletons, nightmares everywhere, time loops, and many other things. Things were so much easier in the Nightmare realm...

    Will a child god, a child spirit, and a literal child be able to stop the rewinding clock and give everyone they love a happy ending?

    Language:
    English
    Words:
    8,053
    Chapters:
    5/?
    Comments:
    30
    Kudos:
    89
    Bookmarks:
    23
    Hits:
    1096
  13. Tags
    Summary

    Dr. W.D. Gaster wants to create a weapon—a soulless, non-sentient creature capable of killing any human that should fall into the Underground. What he creates is a child.
    ___

    Alternatively: the one wherein Dr. Gaster accidentally becomes a single father raising two skeleton werewolves children.

    Language:
    English
    Words:
    75,768
    Chapters:
    11/?
    Comments:
    169
    Kudos:
    212
    Bookmarks:
    37
    Hits:
    1949
  14. Tags
    Summary

    Susie had left her diary unguarded. Finders keepers, right? Kris grabbed it, and went to read it, but it was written in strange symbols. But, luckily for Kris, in the back was a messily written translation from the symbols to regular letters. Kris was able to translate Susie's old diary, revealing a ton of secrets about the mean girl's past, and why she is the way she is now.

    Language:
    English
    Words:
    15,387
    Chapters:
    21/?
    Comments:
    1
    Kudos:
    20
    Hits:
    283
  15. Tags
    Summary

    Original story by Staringback : “Sooner or Later You’re Gonna be Mine.”
    (This story contains slight spoilers if you haven't read SOLYGBM)
    Mafiafell AU featuring Sans x Frisk.
    A sequel to the wholesome, less gruesome alternate night before Frisk got kidnapped by the Dreemurrs story; (“Dancing On This Emotional Swing.”) now since long passed.
    A terrible illness befalls Frisk, and Sans is slapped in the face with his Lady’s own mortality. What is wrong with her? Can she be cured?
    What has become of the monsters and the people of Fell City? Who yet breathes after the Gang War between the Dreemurrs and the Gasters?
    Will Determination prevail…. Or fail? Find out in this epilogue!

    Series
    Language:
    English
    Words:
    18,776
    Chapters:
    5/5
    Kudos:
    10
    Hits:
    85
  16. Tags
    Summary

    Your father is a poor man, who has a plan that might make him rich. All he wants is money and to make his small family happy, so he hopes the Aster family is able to make that happen somehow.

    But you fucked all of that up for him because of what happened at that party. Or at least, that’s what you thought at first.

    Little did you know, one of the members took a liking to you… he isn’t exactly happy about that. He doesn’t like attachments. He struggles to give you everything. Struggles to feel things in general, and usually locks his heart away.

     

    You just had to open the cage.

    ___

    I update every other Saturday or Sunday!

    Language:
    English
    Words:
    32,962
    Chapters:
    10/?
    Comments:
    295
    Kudos:
    613
    Bookmarks:
    115
    Hits:
    6922
  17. Tags
    Summary

    When Frisk finished her story, barrier broken and monsters freed, she knew there was still a loose end, but she never expected everything to come unraveled before her eyes. Determined to save the only family she’s ever known, Frisk must stitch their lives back together after they are ripped apart at the seams and then attempt the impossible to stop it from ever happening again.

    [A story like this has been told before, in many different ways by many different people. Even so, I hope you enjoy it. Please know all major canon timelines and the music of Undertale before reading for the best experience.]

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

    Series
    Language:
    English
    Words:
    733,858
    Chapters:
    85/85
    Collections:
    1
    Comments:
    28
    Kudos:
    42
    Bookmarks:
    6
    Hits:
    747
  18. Tags
    Summary

    Sans had gotten used to them resetting after a while. Eventually, it became almost a routine of sorts: they’d get bored half-way through, reset, and redo everything all over again, whether they choose to spare or kill that time. Sometimes it was after getting monsters to the surfaces, other times it was before. It seemed they were never satisfied.

    But one day, things are different. One day, they fail to appear like they always had; in their place is a ghost, similar to them but far more different. They claim the other has disappeared, without so much as a trace.

    And Sans is left to wonder if he’ll ever see the kid again.

    Language:
    English
    Words:
    265
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    37
  19. Tags
    Summary

    The Kingdom of Monsters sealed beneath Mt. Ebbott is a kingdom divided.

    After the deaths of the Royal Children and Asgore’s declaration of war, the order was given that any humans who fall would be killed and their souls used to break the barrier and for a time, the citizens of the kingdom were content to wait for all seven souls that were needed.

    It wasn’t until many years later after the next human’s fall and subsequent death that many monsters spoke out against the King’s decree and insisted that the human soul should be absorbed and used to free the kingdom. It wasn’t long before civil war broke out amongst the people of the Underground.

    The group that wanted to use the soul eventually lost the battle and were forced to the lands far from the Capital, the whole of these places serving as a prison for the defeated monsters. Waterfall and Snowdin have long since been forsaken, their residents a mix of dissenters and criminals sent away by the Capital.

    When Sans and his brother receive information regarding strange incidents occurring in town over the last few weeks, their investigation leads them to discover something that will shake the whole kingdom to its’ core.

    Language:
    English
    Words:
    1,719
    Chapters:
    2/?
    Comments:
    1
    Kudos:
    5
    Bookmarks:
    2
    Hits:
    20
  20. 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:
    26,980
    Chapters:
    3/?
    Comments:
    3
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    35

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

Pages Navigation