Undertalecrossover Stories

Sans was sick of the endless resets that haunt his world, knowing full well that is the player's fault. As repeating cycle continues something odd happens at yet another...

This is a crossover between Percy Jackson and Undertale After a genocide route, Sans is somehow not dead, and Chara has broken the barrier and mysteriously disappeared...

Harry Potter was master of death, he was use to ending in other universes/timelines. This time he ended up as a skeleton monster Remake of Death and wingdings om ao3 201...

Life itself is unfair. People are lost in the blissful deception, believing everyone is treated the same. But there are those who got it worse, Sans learned that the har...

Remember when Chara killed Sans? What happened if instead of him dying, Gaster pulled him into a different dimension and was able to heal them with a healing pink founta...

Here is all the stuff for my new Undertale & Deltarune AUS, Mixeltale & Taxlimel (which is an anagram of Mixeltale). I do not own Mixels, Undertale, or Deltarune in any...

While exploring Mount Ebott(which was one of the mountains that surrounded Gravity Falls), the Mystery Twins Dipper and Mabel accidentally fell into a huge pit, which le...

Book cover created by @Krystal_GlitchGirl A collab book series with @Krystal_GlitchGirl This book series will be about the aphmau smp meeting different fandoms, I'll be...

Undertale x Ninjago This is not my original idea, it was a one shot, that is on fanfic.net. It is under the same name. There's a lot Nya didn't tell the ninja about wh...

♡ : 𝘯𝘢𝘵𝘴𝘶𝘬𝘢𝘴𝘩𝘪𝘪 - 𝘢 𝘸𝘰𝘳𝘥 𝘶𝘴𝘦𝘥 𝘸𝘩𝘦𝘯 𝘴𝘰𝘮𝘦𝘵𝘩𝘪𝘯𝘨 𝘦𝘷𝘰𝘬𝘦𝘴 𝘢 𝘧𝘰𝘯𝘥 𝘮𝘦𝘮𝘰𝘳𝘺 𝘧𝘳𝘰𝘮 𝘺𝘰𝘶𝘳 𝘱𝘢𝘴𝘵. ... 𝘣𝘶𝘵 𝘯𝘢𝘵𝘴𝘶...

Everything sure has changed for the better, not only has all the gems been uncorrupted and the war with the diamond authority has been dismissed but now, all monsterkind...

Seconds before disaster, and the end of all AUs, Ink managed to grab the Perseverance Vial. Quickly, before his enemies managed to snatch it from him again, he unleashed...

I started this while bored during the FSA, and my friends wanted me to upload it. I know it's cringy, I don't really care, lord help him.

Art ain't mine.I only used it to make le cover.Countryhumans highschool, elemantary and kindergarten au all mashup together cos why not?Other than that this was mosty ma...

Hi 👋🏻! I'm Bea. This is my crazy story about my friends, who are known as the CreepyPastas. I have a few other friends besides them, buuut let's focus on the CreepyPas...

One camping trip gone wrong and here they are. Who would've thought that Mt. Ebott is actually in Michigan and it so happens to be in Grand Venture State Park with the g...

ehjedhi did this cauz i bord

Sans Undertale goes on wacky misadventures throughout the known multiverse.