Underverse and its Crossovers
82 stories
Entangle by Firehedgehog
Firehedgehog
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Betrayal is a horrible word, Torn apart and memories stolen of them. Then a crew of dark and star sans end in the Entangled Multiverse. Meet Raves the 'Creator'. Crossover With Harry Potter
Them skeletons... (HP/UNDERTALE) by EmberDash
EmberDash
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The crossover no-one asked for................ Undertale and Harry Potter! Need I say more
Befriending A Demonic "CHARActer" ( A Female Chara x male reader ) by AnotherManOfCulture
AnotherManOfCulture
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So one day, on your way home, you saved a girl, then the girl asked you to escort her home. After that you had a little "happy accident" with her sister. And then, the story begin... ( A/n : " Also there will be a lot of grammar mistakes in this book and I will be very glad if you guy help pointing it out for me 😉 ) Disclaimer : Art is not mine Undertale and the "Chara"cters belongs to Toby Fox Warning : May turn into an action fanfiction with magic, guns and stuffs. Also, poorly written and a lot of randomness are in here.... You have been warned
FNAF and Undertale Crossover: Nightmares Within by Purpleix
Purpleix
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Endless nightmares everyday. They never stop, they keep on coming. 6 hours of closing doors and running. You just wish it could end. You just wish you could end it all. (Pictures aren't mine and belong to their respective owners.) Book 1/3
The Rib Tickling Hero, Sans! (Undertale x My Hero Academia Crossover) by thefnafreader
thefnafreader
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Ah look, another Undertale x BNHA crossover. In this story, sans always loses to Chara in his never ending battle against her. Then, one day, mysteriously, someone "accidentally" corrupted Chara's SAVE file. Instead of sans being sent to his normal home, he is instead sent to a brand new world, one where heroes and villains exist, and everyone has powers just like him. How will sans cope with the ever setting dread of being stuck here? Is there a way out..? Also, I'm not adding AU sans to this story. Simply put, Ive seen way to many fan stories suddenly shoehorn in AU sans. But if requested I may make an AU with that AU sans instead of classic sans.
You Can Change {Papyrus x Chara} by x_golgothasTerror_x
x_golgothasTerror_x
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I did this for me. If you don't ship, BE GONE WITH YOU!!! Plus, this may be about 4 or 5 chapters, but I'm trying to make the story and romance good. ~ LEMON FREE ~
Highschool dxd x male Gaster reader by Dragonslayerking
Dragonslayerking
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I don't own undertale or highschool dxd or anything else I add into it but I own my own ideas
An errors revenge (neglected and abused male error sans reader x RWBY) by Odd_Author
Odd_Author
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Y/n/ Rose was abused and neglected by the rose family for 6 years. Ruby was 6, yang was 8, and Y/n was 7. He was neglected and abused because he hasnt found his semblance yet. He found his semblance at the age of 6 but he cant use it because he becomes an error. I dont own undertale or any of the characters or rwby or the pictures used.
Ice To Meet You (Male!Sans!Schnee!Reader x Yang) by DrakeWings
DrakeWings
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When Willow Schnee gives birth to twin siblings, it seems like a good day for the Schnee family. But Jaques thinks otherwhise, he sees his new son as weak and lazy. One day, he kidnaps his son and locks him in the basement for him to beat the hell out of him. Y/N eventually breaks out and goes to Vale where he gets a job at Junior's Bar where he might have gotten more than he has bargained for. I don't own RWBY or Undertale. I also don't own the art and music used. I only own this version of Y/N and some OCs down the line.
Undertale AU'S- The Void's Wrath- A Forced God Of Destruction Error Story by ShadeyandDarkGamer
ShadeyandDarkGamer
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Error gets imprisoned by the Council Of Judges, and Balance is closer to tipping then ever. However, little did anyone know that the residents of the Void, The Gasters, as well as a few others, were watching them, as it always is. And now they've had enough of Error suffering. They've created an entity from the void, A young human-looking void based being, that's connected to Error telepathically, and sent him and Fatal Error to act as the new Destroyers. Can they save the balance and Error? Read to Find Out! (Updated Thumbnail!)