1 - 20 of 1308 Works in Ecto-Penis (Undertale)

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  1. 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:
    422,982
    Chapters:
    44/90
    Comments:
    716
    Kudos:
    242
    Bookmarks:
    38
    Hits:
    8262
  2. Tags
    Summary

    “So what are you doing here?” Sans says to you, with a look of genuine interest.

    “Like, here at this party? Or here at this college?” You say raising an eyebrow playfully.

    “Hm, both.” Sans says.

    “Well, honestly? I only agreed to go to college to appease my parents. I just picked the first thing that came to mind to major in honestly. And I'm at this college in particular because my friend, Adelya-” you say pointing in your friend's general direction, “-decided to go to college this year too.” Resting your hand back at your side. “Actually she is the reason I'm at this party too I guess.” You huff in amusement.

    “Appease your parents?” Sans was actually kinda surprised, he didn't think a soul as bright and powerful as yours would be forced into anything, but he doesn't know your situation enough to be the judge of that yet.
    -----------------------------------
    Undertale College/University AU where you have a rare abnormal soul, and Gaster wants you as his research subject. Sans makes things hard for him, your friend tries her best.

    Series
    Language:
    English
    Words:
    180,770
    Chapters:
    15/32
    Comments:
    86
    Kudos:
    112
    Bookmarks:
    27
    Hits:
    2679
  3. Tags
    Summary

    Monsters have made it to the surface and made a place for themselves. A place that's still dangerous for humans.
    Feeling ill and heading to her apartment at the edge of the Monsters' part of town, (Y/n) runs into a wall, helped there by Sans, who she'd run into first. When she wakes up, she's a human in the middle of the Monster territory, with no way out and a couple of edgy skeletons for hosts.
    Sans doesn't particularly want to hurt just anyone, but he has to keep his tough guy image up. What he wants, is to find out why this strange, beautiful human woman kissed him, especially after he'd thrown her against a brick wall, but she faints too quickly to ask. To keep her safe, he decides to take her home until she wakes up. ...and then maybe he decides she should stay there a little longer...

    Language:
    English
    Words:
    74,286
    Chapters:
    29/?
    Comments:
    365
    Kudos:
    645
    Bookmarks:
    136
    Hits:
    15732
  4. Tags
    Summary

    “Run, Cross. Run as fast as you can.” It’s downright terrifying how the finality of those words echo inside his skull, sockets opening wider, unbelieving, scared, knowing his chances of survival are low. Surely sensing this, Nightmare’s grin turns wicked, sweetly adding, “If you can make it to the castle before they catch you, I’ll grant you my forgiveness…otherwise…”

    Somehow, this is simultaneously worse and better than drowning.

    Series
    Language:
    English
    Words:
    5,801
    Chapters:
    1/1
    Comments:
    9
    Kudos:
    65
    Bookmarks:
    9
    Hits:
    383
  5. Tags
    Summary

    Papyrus laid out a trap for his brother and an unsuspecting sans walks right into it. Which leads to way more than he has bargained for.

    Language:
    English
    Words:
    3,205
    Chapters:
    1/1
    Kudos:
    13
    Bookmarks:
    1
    Hits:
    168
  6. Tags
    Summary

    Born of the void, a being not meant to exist outside its darkness. What will become of the worlds he touches...

    Series
    Language:
    English
    Words:
    171,815
    Chapters:
    27/?
    Comments:
    350
    Kudos:
    278
    Bookmarks:
    54
    Hits:
    9332
  7. Tags
    Summary

    My first attempt at kinktober!

    I'll try to keep the reader gender-neutral.
     

    No kinkshaming the author or other readers!

    Language:
    English
    Words:
    13,569
    Chapters:
    18/31
    Comments:
    65
    Kudos:
    175
    Bookmarks:
    22
    Hits:
    8252
  8. Tags
    Summary

    This is a One-shot collection! Feel free to send ideas!
    A lot of possibly heavy content and graphic descriptions of very explicit things so be warned!
    No minors allowed.

    Language:
    English
    Words:
    3,627
    Chapters:
    2/?
    Comments:
    14
    Kudos:
    85
    Bookmarks:
    7
    Hits:
    606
  9. Tags
    Summary

    before being allowed to live in the castle, all residents are required to see if they are... compatible

    Language:
    English
    Words:
    13,461
    Chapters:
    4/?
    Comments:
    22
    Kudos:
    159
    Bookmarks:
    31
    Hits:
    1988
  10. Tags
    Summary

    Four AU’s have come to a happy ending on the surface. It is a new beginning for everyone, but Berry is haunted by his past that still clings to him and threatens to pull him back into the darkness, unknown to his now growing skeleton family. The newest skeletons are from the last set that surfaced: Fellswap. They are not going to let Berry be taken. Howl and Daemon, the two newest skeletons, have to dig into a horrible truth and show the world Berry’s past, and with the help of their fellow skeletons, they hope to make a better future for him and all other monsters.

    This is adapted from a role play with GetMcDunkedOn and me (Diyami). I hope you enjoy it.

    Language:
    English
    Words:
    77,208
    Chapters:
    14/?
    Comments:
    97
    Kudos:
    107
    Bookmarks:
    27
    Hits:
    2262
  11. Tags
    Summary

    Rust has been dragging this on for far too long in Blue’s opinion, although if he’s being honest with himself, he doesn’t mind quite as much as he’s trying to convince himself he does.

    Language:
    English
    Words:
    1,522
    Chapters:
    1/1
    Comments:
    3
    Kudos:
    34
    Bookmarks:
    6
    Hits:
    241
  12. Tags
    Summary

    You ran away. You couldn't face your dark past, it was to much for you. You moved to Ebott City to start a new life. Swearing off friends and relationships all together. Or so you thought...Two skeleton brothers move in next to you. You can't help but be drawn into them. Will you let them in to help you with your haunting past? or will you run again when your past catches up to you?

    Language:
    English
    Words:
    78,632
    Chapters:
    44/?
    Comments:
    354
    Kudos:
    733
    Bookmarks:
    116
    Hits:
    13604
  13. Tags
    Summary

    Sans's partner is constantly working. He's, however, tired of seeing them overwork themselves, and frankly… he's heard a rumor from their friend, and is curious to find out if it's true or not.

    Language:
    English
    Words:
    9,077
    Chapters:
    1/1
    Comments:
    2
    Kudos:
    29
    Bookmarks:
    3
    Hits:
    549
  14. Tags
    Summary

    "They're both idiots, your honor" - literally everyone looking upon you and Mal. Therefore, Stretch took it upon himself to throw you to into his brother's room telling you two that you have to start "getting along" or you'll be stuck together for a whole day.

    Language:
    English
    Words:
    5,621
    Chapters:
    1/1
    Comments:
    1
    Kudos:
    45
    Bookmarks:
    7
    Hits:
    396
  15. Tags
    Summary

    How did you end up in this… "void"? You don't know. What you do know, on the other hand, is that you're stuck here with a skeleton guy about a foot shorter than you. But he is… far more excited for a "proposition" to kill time than he should be. Or, rather, than you expected him to be.

    Language:
    English
    Words:
    9,198
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    54
    Bookmarks:
    9
    Hits:
    367
  16. Tags
    Summary

    The title says it all.
    I'm gonna be moving these from my Wattpad account so if you're coming from there, this isn't anything new.

    Each oneshot will have its own summary and warnings if need be.
    Credit:
    Geno, Error, and Fresh by CrayonQueen (loverofpiggies)
    Reaper by Renrink
    Swap by the Undertale Community
    Classic Sans and Undertale by Toby Fox
    ~Second Gen~
    Goth by Nekophy
    Raven by ask-the-gothfamily
    Sorell by Zenkomi-chan
    Shino by Blue-kohina

    Language:
    English
    Words:
    89,559
    Chapters:
    33/?
    Comments:
    10
    Kudos:
    81
    Bookmarks:
    5
    Hits:
    2499
  17. Tags
    Summary

    Red has had a rough day. Blue knows just how to take care of him and let him unwind.

    Series
    Language:
    English
    Words:
    3,091
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    28
    Bookmarks:
    3
    Hits:
    279
  18. Tags
    Summary

    Welcome to my first ever one shot book! In here I'll be sure to include many different things, Like- Love, Action, Angst, and Smut!

    Delve into the different world's of our favourite Skeletons as i put them through as many different scenarios as possible!

    REQUESTS OPEN

    Language:
    English
    Words:
    37,823
    Chapters:
    28/?
    Comments:
    158
    Kudos:
    188
    Bookmarks:
    15
    Hits:
    4274
  19. Tags
    Summary

    So Another Undertale story. Will contain AU'S and Classic. Takes place in an AU with all of the AU'S connected. In this universe people are born with three classes. Pet, one to obey a Master, Master one to control the pet and neutral, one who is neither pet nor master and is just a regular citizen. In this story Ink is a Prince, Nightmare is the King, Dream is the other Prince and Error is like the royal advisor. The bad sans' (Horror, Dust, Killer, Cross, Edge) are royal guards. Blueberry is a pet to Dust, Stretch is a Pet to Edge and his Sans(Red) is also his pet. Lust is a switch, he is pet to master but master to pet of Horror. Ink is in need of a Pet. Ink had just recently caught eyes on classic and wants him. Classic is a pet wolf skeleton hybrid. My OC Sam is a human directly descendant from the original seven mages and has the integrity soul trait. In this Fan fiction it it the second rarest trait. Determination is the first. Sam is a neutral switch and Dream notices them. He wants this unique rare human. Only character that belongs to me is my OC Sam. I will specify which AU's and characters do and don't belong to me.

    Language:
    English
    Words:
    31,862
    Chapters:
    24/?
    Comments:
    3
    Kudos:
    17
    Bookmarks:
    2
    Hits:
    1251
  20. Tags
    Summary

    Ink is nothing without Error and Error is nothing without Ink.

    A take on all the multiverse and how they came to be while also trying to understand the importance of communication and feelings. (I'm not that deep but Error sure is.)

    Language:
    English
    Words:
    33,281
    Chapters:
    8/?
    Comments:
    37
    Kudos:
    63
    Bookmarks:
    10
    Hits:
    929

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