Undertale
144 stories
Avid Adopter by Clichely
Clichely
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The Guardian of Negativity, sometimes called the King thereof. He's one of the coldest, meanest beings in the multiverse. So..why does he suddenly have small footsteps scurrying around the house? Nightmare Sans story. I do not own Nightmare Sans or any of the characters in this book.
Vela Pulsar by philippaki
philippaki
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Dream just wanted to be good guardian and be cared for. Is that too much to ask? "Be careful little star the universe can hear you" ERROR in Au Dreamtale. ErRoR DetEcTeD. Diagnosing ErRoR. The trials are numerous but will the ending be worth it? -------- A baby Dream jumps across multiverses causing chaos and eventually finding a family of his own
Becoming dream from dreamtale  by KarmaAkabane425
KarmaAkabane425
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What if someone from our world became dream on the first day they were made and were determined to not lose their brother to corruption like the original dream did in the story/game/movie? Even if they had to hurt the villagers to keep them away from nightmare they will. They will also protect nightmare, their brother from those who want to hit him. They won't be naive and hopeful like original dream. He would even pretend to be the guardian of negativity. He would rather kill the villagers then let then hurt his brother. Yet he still kinda failed and gets turned into stone but not for the reason one may think because Unknown to him nightmare notices his brother keeps getting hurt and finds out the reason for it was that they think Dream his the guardian to negativity. This end up with dream getting a protective corrupted goop of a brother. Well not what he expected but oh well at least he still has his brother. (Things will be different etc, including personality)
Scrubbing Out the Stains by broskiskillet
broskiskillet
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The multiverse decided, "Ayo, Imma need to make a whole other living thing to handle this Balance shit yo." Though there are restrictions, your boi is out in town and ready to get their ass kicked bro. No Romance Cover Art by me Contains an OC, and is OC-centric. Cross-posted on ArchiveofOurOwn User: FieldFlowers Inspired by Fresh New Antivirus by Hidden_Ajinn and the idea of Forced God of Destruction Error by Harrish6
Reincarnated as Horror Sans by Cosmicstars08
Cosmicstars08
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What happens if Someone from our world was reincarnated as Horror Sans? Would they be able to survive or die trying? Through his entire life? 1/7
Reborn as a Shadow Papyrus by UnderTaleHyperFixed
UnderTaleHyperFixed
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Someone dies and are reborn as a Shadow Papyrus. Let's see how thet deal with it shall we?
Becoming ink sans from undertale multiverse!? by KarmaAkabane425
KarmaAkabane425
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What if someone from our world died knowing a lot from the undertale and their multiverse/underverse? What if that person also knew about the balance and didn't creat too many aus? Also they dont like creating sad au's like flowerfell or places they end up like dusttale or Horrortale. Yes they did make au's and may have not known what to call them so they took some names that they knew and remembered from the movie/game/their world like horrortale etc. But they also kept a better eye or eye sockets on his au's and their originals.
The Outcome of Hide And Seek..? by shyyukiwolf
shyyukiwolf
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"Then before the wedding, I caught him cheating on me! can you believe that! WITH MY BEST FRIEND!" I groaned as I slammed my head onto the counter of Grillby's counter making him pat my head gently. I've been in this place for a few years(8yrs) now but I do miss my old home. It wasn't anything like this, no monsters nor magic. Imagine my surprise when I opened my eyes to find myself smack dab in an almost empty apartment. After three months of adjusting, I just started to finally BREATH! no more nagging, no more random calls and definitely no more 'friends'. I had an amazing job, and what I thought was an amazing friend and Fiancé. Now I am sitting at my friend's work to complain about it all. I know every monster here since I was a huuuuuuge fan but they aren't people from a game. Real Live Monsters. I was a freaking squealing fangirl when I first saw them on the TV. The best part and worse part is.... Sans the skeleton....The True Judge messed with the machine and different AU's came tumbling in. I knew from catching glimpses of them while living in town. Now if only I could avoid them all together since they are more scary (adorable) then I want to deal with. "hey sweetheart, names Red..." My face paled immediately... 'what's a chubby woman suppose to do against a BARA VERSE!?'
San au's fall for fresh sans!?  by KarmaAkabane425
KarmaAkabane425
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What if something happened to everyone except About three and it made their emotions more..entense and made them like yanderes? What if the one of the three that wasn't effected was fresh sans because he was a parasite except his parasite is different and protects its host? Now add on to the fact that fresh was also now trying to keep the balance of good and evil with a game of tag. Then add the fact that fresh doesn't really feel to much of the emotions but can still feel them but still adds his logic into that. Then add the fact the only other person thats not effected is error the god of destruction who now hides in his anti-void and now only fresh visits error to talk to the only other person not effected but whatever that messed with either of their friends that made them like yanderes. Along with geno in his safe screen? (It's probably all going to be different. This was inspired by a story called foreververse in ao3 for undertale. Its very interesting so you should go check it out. mines going to be different then theirs but a bit similar with the game of tag. There's only two chapters so I'm not sure how it's going to go exactly so mine might end up too similar or very different. Idk I'll do my best though. But that story is very unique since I haven't seen anything like it. They are many unique stories that I've found and haven't found. That story made me think and made me want to do this so here it is.
I'm reborn as geno but... by DancingAce1
DancingAce1
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I died. how? well some crazy guy broke into my apartment and killed me. Now I'm reborn as a copy of the original geno except something is different... why do I have wings and red tear marks?