Undertalecrossover Stories

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...

At a genocide run Sans unexpectedly wins against ¿Chara? and something strange occurred, the timeline was thrown into chaos. As a result of this chaos, Sans unknowingly...

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...

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

I got the idea to wright a Undertale Five Nights At Freddy's crossover after remembering that I've only ever seen one. Also please go give love to my friend @Luna_the_si...

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...

A story on how Half-Life meets Undertale...

The original Mystery Twins wander Glass Shard Beach on a daily basis, looking for adventure. They weren't expecting to actually find something. When their voyage goes d...

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...

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...

ehjedhi did this cauz i bord

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...

When Lightning and Mater fall down in the underground, they must find a way to get out safely. Along the way meeting new monster friends and a familiar face... Mater's U...

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...

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.

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...

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...

A little undertale/ Steven universe crossover I made. This is about my past, when peridot, Jasper, and me lived all in the same world. I hope you like it!