Undertalefanfiction Stories

-FIRST BOOK OF THREE- Ever since the War, magic humans have been training to kill all monsters when they escape. They've even built a special school designed for teachin...

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...

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...

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...

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...

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 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...

[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...

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...

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 "...

This is the first fanfic I've ever written so plz don't judge. Reader-Chan is a female BTW but guys can read too. I hope u enjoy it! ^-^ COVER IS NOT MINE

After the barrier had been broken and harmony between monsters and humans had returned, a new sinister force arises after peace returned to the land. When the darkness t...

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...

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...

Y/N is a normal girl, exept her soul has two sides the soul of dreams and hopes and the soul of hate and fears, which makes her unstable as a person. She has two brother...

(y/n)(l/n) is a werewolf from the White Hills pack. You are the only survivor from an attack from the Red Lills Pack. Being on your own at the age of six, you struggles...

Innocence had already been more or lost by the Dreemurr brothers, but the friends and memories they'll make along the way are certainly worth it. The question is: will t...

[✔️] Completed 1st book 📖 This is a story about Geno, Error and Fresh who are new to under high. Error and Fresh becomes the school's jocks but Geno is a nerd. He hate...

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...

That's right Ladies and Gentlemen, special long oneshots of our beloved Undertale Monsters! (Requests closed)