Undertalefanfiction Stories

Undertale aus x reader Featuring (in order): Nightmare Error Dream Ink Cross Dust Killer Blue Horror The Soulmate Au is where everyone that comes or lives there will hav...

Cold. Everything was cold. And dark. I was so alone... how could I have wanted this? This couldn't possibly be better than before... the warmth, and the light, and the...

FRANS This is a request and I have been really exited to start writing it! I really hope you like it! Echotale is not my AU! Neither is Jailtale! This is just my own lit...

Y/N's been traded and sold her entire life. She's learned firsthand that if you don't obey your master, you get hurt. If you force yourself to listen, you live another d...

Y/n L/n. A special human with a special SOUL. Yes, her Soul Trait is something new. But other than her SOUL trait she has another secret. One day, while she was at the...

Y/N's best friend Blueberry (also known as Underswap Sans) invited them to move into the shared/connected apartment next door. They could hang out all the time! It's an...

The war between the two guardian rulers and their kingdoms lasted for countless generations. Then came the news that Nightmare went ahead and got himself some new "...

DRAMA, ACTION, BLOODSHED... Love? After erasing hundreds and hundreds of timelines, Chara is suddenly stripped of her abilities. She's forced to lead an everyday life i...

[2nd book] A Yandere Underfell Mettaton x reader story After Y/n falls down, they meet someone to help them throughout their way back home. Somehow they become very good...

Gaster is the current royal scientist, set with a mission to break the barrier and free monster-kind from their underground prison. His loyalty and persistence to the ta...

Art by- ??? (art founded on Pinterest) It's just a discontinued fluff with boyfriend scenarios

[COMPLETED | Undertale x Reader] * There is another one of these collections of the famous game "Undertale" with the reader in it. * It fills you with determin...

One-shots about the superstar robot and you, the reader. There will be fluff (mostly), some steamy ones, and possibly more. I hope you enjoy reading these! #1 number in...

𝐍𝐢𝐠𝐡𝐭𝐦𝐚𝐫𝐞 𝐡𝐚𝐬 𝐠𝐫𝐨𝐰𝐧 𝐢𝐧𝐬𝐚𝐧𝐞. 𝐇𝐞 𝐧𝐨 𝐥𝐨𝐧𝐠𝐞𝐫 𝐞𝐱𝐢𝐬𝐭𝐬. 𝐈𝐭 𝐜𝐚𝐮𝐬𝐞𝐬 𝐦𝐚𝐧𝐲 𝐭𝐨 𝐟𝐞𝐞𝐥 𝐞𝐦𝐩𝐭𝐲 𝐚𝐧𝐝 𝐥𝐢𝐭𝐭𝐥𝐞 𝐦𝐨𝐧𝐬�...

The Universe is vast. And if there is anything confusing that having two of yourself, it is having a vast plethora of others similar to yourself, that have the same name...

Suddenly you find yourself in the Underground, with no memories and an unknown and painful past. Your first encounter is Flowey and he tells you how weird and different...

Classic x Au Sanses Classic after his whole Au has been corrupted, stumbles his clumsy ass into a portal into a friendly fellas places. How predictable. Anyways, the fel...

Y/N works with Error destroying aus until the truce. Y/N and Error decided to get along, but what happens when they fall in love? cheesy description, I know. !!!COVER AR...

Flowerfell is an AU (alternate universe) of another AU called Underfell which is an AU from Undertale. If you don't know what Undertale is you will not understand any of...

You fall down this hole in a mountain, and while traveling through this weird world, you meet a robot. This robot is no ordinary robot, and after you fall in love with h...