Undertaleau Stories

A fanfic/story of Nightmare and children bad guys! All of the bad guys are children excluding Nightmare and Error. This is a story of Nightmare being a parent. I am ter...

You're the Ink of your multiverse, and you don't even know it. Well, until you meet the Ink of another, along with Error. -NOTES- I made the cover! This obviously isn't...

There are 2 different multiverses that are next to each other. One that is made simply of Code and Data, being made by the Game Creators, used for entertainment by the P...

You wake up, finding yourself standing in a desolate grassy field, only the green grass had withered and died, leaving behind a dry, lifeless expanse. Above, the sky was...

(Discontinued) A random teenager dies, and no they don't get hit by the Isekai truck unfortunately. The 'driver' couldn't make it on time. This teenager wasn't really r...

A young person wakes up in the endless Void, transported into the glitching, destructive body of Error Sans. With the power to erase entire timelines at a flick of his s...

~ Dream was born 21 years after Nightmare was. Right after he was born, he was already titled as the 'Guardian of Positivity'. Quite too young for a child like him. But...

When your sibling Chara goes missing you fear the worst, but life takes a surprising turn for the better when they release the monsters trapped underground. Living this...

The Underground...once the home of the race of Monsters, now having turned into an infectious wasteland of starving-infected beasts, with the monsters horribly twisted a...

Living on a steady diet of caffeine, sugar, and sheer will is not a healthy lifestyle. But how else can you keep up with teammates that need no sleep, no food, and who e...

(As far as I know, no one has made a story about naturetale like this so..and the only reason why I writing one like this is because of fatal error part 5? Or part 4, go...

(Book gets better with each OneShot-) Requests are (Closed ❌), Thank you! I've started this when I was in 8th grade, because I've seen a few x Reader books and was like...

Someone dies and is Reborn as Sans. Not just any normal Sans like they assume as first, but a HORROR Sans. As if dealing with Gaster when they were young wasn't enough...

(You know how it goes, someone from our world Ends up dead and becomes dust sans..but somehow pregangt, different things, different personalities etc

Nightmare's gang always knew that their job was risky, but they never expected to actually die. Then Killer was killed. Nightmare found a replacement quickly enough, bu...

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...

(Y/N) had a regular life. A normal job, home, everything. Sure she had her own problems like insomnia, nightmares, and no friends but that wasn't anything to special. T...

Okay I'm only doing my Favourite ships so I won't be any taking requests. I stand my ground and would like it To stay that Way for as long as I stay on this App. ⚠️ALSO...

Jaune Arc this man always wanted to be a hero like his ancestors but fate decided to mock the blond knight Jaune saved Cardin Winchester from the Ursa Major but Cardin d...

Try seeing things from another point of view... Fresh wants to feed off of a long lasting host, he wants to exist longer. How will he do this and how will he survive? On...