Undertalefanfic Stories

It's only been a few years since monsters have been released from their underground prison. In some towns, monsters are welcomed with open arms. Others? Not so much. Y/N...

Want to talk about falling into the wrong place at the wrong time? Y/N definitely scored big time on that one. One moment she's falling, the next she finds herself trapp...

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...

-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...

Au Sanses x Reader If you like edgy and scary Sanses, and romantic and fluffy and edgy scenarios, then this is the book for you!!

Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful...

This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a...

Slice of life and adventures with Melati!sans and his loyal companion Jasmine, together they will travel across the Multiverse as traveling Merchants. what will they fi...

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

You are a orphan that was being chased by a dozen Orphanage keepers. You had just witnessed your friend's death and had ran away. You quickly run to Mount Ebbot. And you...

"Psychotic tendencies..." As a child, Y/n L/n had a good life. She was always complimented for her h/c hair and e/c eyes. She had a loving little sister and a...

Y/N was a normal teenager who gets bullied everyday, she has only one friend who called 'Frisk' one day they decide to climb the mountain but then... "I want you to...

A second-person relationship with Asgore Dreemur, former king of the underground. With all the pressure on a sixteen-year-old hiding his sexuality from his family and th...

When Weiss Schnee Gets Hit by Cinder Falls Fall Maiden power she falls into the abyys and ends up in the anti void instead of The Ever After where she meets Error!San's...

A Goat!FriskXAsriel Fanfiction After the Barrier is destroyed by Asriel, he is doomed to turn back into Flowey once more. Lilac (Frisk) desires otherwise, and gives the...

You've lived your life without ever knowing your parents. Despite that you dream big because you don't have much; aiming to become a famous singer and prove anyone who h...

A life where I have to fight everyday,sounds tiring but if my bro is there than I have to be. I made a promise, sure, but that won't stop me from being there for my brot...

Frisk! Stay determined... It's 2024! Why are you still reading undertale fanfic?!? Don't you have anything better to do!!?? Despite the harsh reality that has got you ov...

Mettaton thinks you look absolutely fabulous~! Come and read this book so he can give you some love darling~!

not every story has a happy ending