41 - 60 of 1,867 Works in Ecto-Penis (Undertale)

Navigation

Listing Works

  1. Tags
    Summary

    Using Frisks Soul, Asgore manages to bring down the Barrier, in the process absorbing the souls and becoming a being of unfathomable power. Using a monster army and his newfound strength, he takes over a town at the base of the mountain.

    Monsters become the reigning power, and a human slave trade blossoms in "Overground" (so named by Asgore). Monsters own humans as butlers, pets, and entertainment.

    Sans never thought he would personally own a human servant, but after a chance encounter, he has to face his worst fear - living with the same creature as the one that haunts his worst nightmares.

    Series
    Language:
    English
    Words:
    173,418
    Chapters:
    52/?
    Comments:
    1,047
    Kudos:
    1,530
    Bookmarks:
    204
    Hits:
    36,582
  2. Tags
    Summary

    I'm sorry if I'm taking so long, I want to make sure this sweet baby is well cooked and fucking delicious!<3 >:3c

    Series
    Language:
    English
    Words:
    5,939
    Chapters:
    3/4
    Comments:
    6
    Kudos:
    30
    Bookmarks:
    1
    Hits:
    1,505
  3. Tags
    Summary

    this doesn't take place in anything just something i randomly made up
    asher(i like this name) is the mc
    asher was running from demons he's a incubus who finds a church

    Language:
    English
    Words:
    1,313
    Chapters:
    4/?
    Comments:
    15
    Kudos:
    4
    Bookmarks:
    1
    Hits:
    457
  4. Tags
    Summary

    Made this for fun, might make more Swadmare or UTAU fanfics in the future ;3

    Language:
    English
    Words:
    4,289
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    26
    Bookmarks:
    1
    Hits:
    487
  5. Tags
    Summary

    The dichotomy between black and white is your constant when it's time for you to meet the whole new civilization Frisk brought along with them to the Surface.

    As a parent, it's not easy to trust others when they've hurt your child.

    So when that new civilization decides they owe Frisk both for saving their kind and for still hurting them during that process, you've got plenty to say to them.

    Forgive as easily as you once did with others during a stage of naivety? Oh, hell no.

    They better have a good reason for hurting your child and an even better one for wanting to be a part of their family.

    • • •

    Full Arc List:

    Arc 1 | Ruins

    Chapters 1 to 15 (✓ complete)

    Arc 2 | Enemy Approaching

    Chapters 16 to 25 (✓ complete)

    Arc 3 | Pathetic House

    Chapters 26 to 30 (× current)

    • • •

    (Important Notice: If this work seems familiar, it was originally published in 2020, but was deleted due to various health issues!)

    (OLD WRITING LASTS UNTIL CHAPTER 25.)

    Language:
    English
    Words:
    159,585
    Chapters:
    58/60
    Comments:
    111
    Kudos:
    263
    Bookmarks:
    77
    Hits:
    11,341
  6. Tags
    Summary

    Two travellers running from their own minds meet on a precarious cliffside. Do they find comfort in one another or is everything going to go to hell?

    Series
    Language:
    English
    Words:
    10,513
    Chapters:
    1/1
    Comments:
    12
    Kudos:
    21
    Bookmarks:
    1
    Hits:
    267
  7. Tags
    Summary

    Error lost one fight after another to the Star Sanses. The Universes and code problems kept piling up, and despair drove him to do anything. He tried everything—different strategies, plans, traps, code combinations—but nothing worked, and he remained stuck, with unfinished work and voices behind him.

    Until one day, he was embarrassed to discover that suddenly, after so much magic had been spilled by him and his enemies during fights, he could... Invoke a certain, intimate part of the ectobody without their knowledge and influence it as he pleased. Of course, Error was not going to use this! No way! He had principles! Pride, after all!

    But... Every day it became more and more difficult, and no other options appeared. And if he could overcome his embarrassment and shame, then maybe it would be worth it?..

    Language:
    English
    Words:
    4,440
    Chapters:
    1/?
    Comments:
    2
    Kudos:
    86
    Bookmarks:
    12
    Hits:
    1,155
  8. Tags
    Summary

    this is a collection of underswap papyrus x reader smut from my main book 'First the dead rise and now SKELETONS?
    this can be read as a stand alone smut book as I'll try to keep any major spoilers out of it but some scenes may be confusing without context
    I kept the gender and description of the reader ambiguous so it can be read by everyone of any gender

    Series
    Language:
    English
    Words:
    6,355
    Chapters:
    2/?
    Kudos:
    10
    Bookmarks:
    1
    Hits:
    309
  9. Tags
    Summary

    You've been living in Snowdin for a couple months now, taken in by a pair of friendly skeletons, a bubbly short one and a chill tall one. Things are going well up until Papyrus starts acting strangely. Why does he keep avoiding you? Why is he acting so possessive? And why won't he tell you what's wrong?

    (A short, self-indulfent warm-up fic I'm doing to get back into writing. :)
    will try my best to update somewhat regularly but we'll see. my or may not turn this into a series of one-shots.)

    Language:
    English
    Words:
    11,030
    Chapters:
    5/?
    Comments:
    9
    Kudos:
    95
    Bookmarks:
    13
    Hits:
    1,565
  10. Tags
    Summary

    Red finally, finally gets Sans to agree to a fun time in bed. They have a great time together! Then Sans goes and works himself to the bone before finding the courage to invite Red to see a meteor shower. Who knew he'd learn Red's deepest secret while under the stars?

    Language:
    English
    Words:
    12,899
    Chapters:
    1/1
    Collections:
    1
    Comments:
    3
    Kudos:
    41
    Bookmarks:
    6
    Hits:
    380
  11. Tags
    Summary

    When you find yourself somehow having traveled to the world of undertale how do you handle all the hot skeletons?

    Language:
    English
    Words:
    282
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    223
    Bookmarks:
    45
    Hits:
    14,395
  12. Tags
    Summary

    Papyrus loves Sans, perhaps more than a brother should

    Language:
    English
    Words:
    7,030
    Chapters:
    1/?
    Comments:
    9
    Kudos:
    56
    Bookmarks:
    9
    Hits:
    878
  13. Tags
    Summary

    stage 3 is bored. boredom never leads to anything good. and hey, it's not like he feels anything, but in the midst of a fight with horror, wouldn't it be fun to at least pretend to feel that one feeling (what was it, horniness?) and see what happens if he 'were'?
    what did the horrortale storyline go like again...? surely talking like undyne would lead to something new!

    Language:
    English
    Words:
    2,588
    Chapters:
    1/1
    Kudos:
    9
    Hits:
    161
  14. Tags
    Summary

    Lust is the most prized escort in town, with a Boss no one has ever seen and who's the subject of many rumors. Red and Sans are both heirs to the two most powerful mafia families in town. What happens when they're accidentally booked with Lust together ? And are they truly the ones in control ?

    (Content warnings in the tags)

    Series
    Language:
    English
    Words:
    10,737
    Chapters:
    1/1
    Collections:
    1
    Comments:
    6
    Kudos:
    21
    Hits:
    523
  15. Tags
    Summary

    Nightmare has always been distant from his gang for multiple reasons. But deep down, he does love them. How does he show his affection towards them while having plausible deniability? Sex.

    Language:
    English
    Words:
    8,215
    Chapters:
    4/5
    Comments:
    5
    Kudos:
    89
    Bookmarks:
    12
    Hits:
    1,667
  16. Tags
    Summary

    Edge is a child. Well, a teenager, but a child nonetheless. Children needed love. Edge never received it. Edge looked for it in the worst way possible.

    Coffee is an adult. Well, a young one, but an adult nonetheless. Adults needed love. Coffee never received that. Coffee was happy to provide Edge with plenty.

    TLDR: Edge gets groomed by Coffee.

    Language:
    English
    Words:
    4,760
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    6
    Bookmarks:
    1
    Hits:
    422
  17. Tags
    Summary

    After weeks of texting, they meet up, but even something so simple spiraled into a mess.

    Language:
    English
    Words:
    9,435
    Chapters:
    1/1
    Kudos:
    25
    Bookmarks:
    2
    Hits:
    618
  18. Tags
    Summary

    He would lock this door, go back to his apartment, and then deal with his possible impending doom. Everyone’s possible impending doom. Their death; His death: ineffable and eternal.

    Juniper nearly jumps out of his bones when Nightmare comes crashing through the door, barreling directly into Juniper— knocking them both to the floor.

    Juniper.

    One-third of the Multiverse has disappeared in an instant. Nightmare distracts Juniper from their possible impending doom with a few... creative methods.

     

    (Juniper's POV. A companion fic to 'the moon will sing')

    Series
    Language:
    English
    Words:
    10,865
    Chapters:
    2/2
    Comments:
    3
    Kudos:
    42
    Bookmarks:
    6
    Hits:
    877
  19. Tags
    Summary

    Vanessa still wants her, Amelia can tell that much.

    She’s always been the type to stare. Even when they were kids— Vanessa’s eyes would catch on Amelia’s lips one too many times during a conversation and her cheeks always, always had this beautiful flush to them in those moments. By the time they were teenagers, Vanessa would just lean in and steal a kiss, as was her right.

    It’s different now.

    Language:
    English
    Words:
    6,417
    Chapters:
    1/1
    Collections:
    1
    Comments:
    4
    Kudos:
    46
    Bookmarks:
    5
    Hits:
    1,330
  20. Tags
    Summary

    It had been a while now that Black and Y/N knew each other, Y/N clearly liked Black and some things led to them meeting each other in the kitchen, and in this kitchen will happen some things that they will both like and some things they will not.

    Or

    Y/N and Black fuck in the kitchen and get caught

    (Im working on a part two where we see what happens after they get caught, maybe i'll finish it in a day, maybe a week, it depends on how much i feel lazy and how i wish i could kill myself or something)

    Language:
    English
    Words:
    2,501
    Chapters:
    2/?
    Comments:
    2
    Kudos:
    12
    Bookmarks:
    2
    Hits:
    330

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

Clear Filters

Navigation