Lost and Foundby Kyran Wolfe
The Barrier is broken, leaving the others to wonder if Sans old home is still there and if they can see it. Sans doesn't want to take the chance, but when he disappears...
Reincarnated as Sans twin brother by Sansdoll123
The reader wakes up to a new life as a monster skeleton. In a new world, that's filled with monsters, humans, and magic. But instead of living their new life to the full...
EmmyVanna *siblings*by kkoi
Picture from YT "Lovely Day Underlust" by Makicute. something like that [Changed it to something else. I don't know the artist ;-;]
I made this book for my two...
Switched destinies (Undertale Role...by I burned the water
A long time ago, humans and monsters live in peace.
But one day, it fell apart and they were in war with each other.
The humans ended up being victorious.
As punishment...
The Flowers Bloom -Classic!Sans x...by AlexLoveForever
You and your sibling, Frisk, have been living in a forest near the city for about four years now. Your daily routine has been unwavering since you moved here. Each day...
Kingdoms(multi ship AU)by UbaLala9
(I have to rewrite the first bits I had because wattpad glitched!) Kingdom AU, merge AU, mystic creatures, people meet and fall in love
Vigilance (Protective Sequel)by Kyran Wolfe
A few years had went by since you made your home in the Underground. You had started a family, started a life. You had a kid and a job at the Arcade. But finally, Chara...
Completed
BenTale Undertale x Ben 10by UnderWritter837
Have You Ever Wondered What It would be like if Ben 10 was in Undertale? Well look no further This is an adaptation of Undertale! The Main Characters are Ben And Frisk...
I'm Kris But In Undertale?!by Tsubaki
Y/n was born in the real world but he had lacked adventure in his life. The only thing that had given him a sense of adventure was a few games like undertale and Deltaru...
FUSEby obliviousbunny
Sans and his AUs fuse...
Cover is my art :^
〔☆〕
DISCLAIMER!
▸ Mature language (swearing, dark humor, dirty jokes etc)
▸ Bad writing
▸ No planning whatsoever
▸ Horrible...
Hungry Love (Horror Sans x Reader )by YandereEmo
In the midst of Tokyo's bustling streets, you led a life that appeared ordinary, despite your role as a leader in a prominent gang. Yet, beneath the façade of normalcy...
【⪻LOVE!LUST⪼】•|| Dreamtale: feat...by Scaighter Eure Arxhael
Everything felt so surreal, was everything just a dream? or perhaps a nightmare that hunts them forever from the guilt tripping them beyond their journey alongside each...
Reborn in Eclipsetale as One of Th...by Luna Kitsune
A young woman dies and is reincarnated in an Undertal Au she made as one of the Skeleton twins. Will she change the multiverse? She changes things in her AU for good or...
Undertale Resurgence: BOOK 1by Random
⚠ UNDERTALE IS OWNED BY TOBY FOX. ALL CREDIT GOES TO HIM, I JUST MADE THIS AU (ALTERNATE UNIVERSE). ⚠
So many resets. Even after all that time, Frisk wouldn't stop.
Whet...
If I was in UNDERTALE AU.by Amethyst A.
An alternative universe of UNDERTALE where my ocs live and end up becoming wrapped up with the monsters underground, and in AUs. Follow Kilsk as she meets Flowey, Napsta...
The NC Multiverseby I burned the water
It's a beautiful day today. The birds are singing and the flowers are blooming. But out of nowhere, Sans, his brother, and his three friends are asked to take care of t...
Desert Sanctuary Guidebookby KarmaSpidr
Clover doesn't give up his soul because justice still needs to be delivered.
The Wild East, and later practically the entire Dunes, declares independence. They declare...
Flickering Lightsby Lost Idiot
Colletta had felt stifled in her friend's house. It wasn't that the house was tiny, rather it was the occupants that were stifling. Although her friend's boyfriends were...
The Alien Hero of the Underground...by ShortMannZ
This story follows the storyline of if Ben 10 travelled the Underground with Frisk.
Feel free to notify me of any errors in the story.
I hope you enjoy.
(I do not take c...
Reborn In UNDERTALE!?by StelleFont
I was just a 19 year old, living my mundane life, until I died... and was REINCARNATED!?
And not only that, I was reborn in the famous videogame release in 2015 Undertal...