error 404 found a new universe he could copy code. instead find a little boy that was similar to his brother. but other undertale God's have found an interest in these new universes. some with good reasons, others with not so Good reasons.

What if Frisk went to the world of Fairy Tail?

After leaving BC Freedom Academy because of it's toxicity, Andou had to find a new answer to the troublesome necessity of finding herself a highschool. And what place could be the answer if not ambitious highschool far away south with talented students, questionably powerful leader and new Sensha-do team being created from leftovers? (AU after Das Finale)

Critical point has been reached. BC Freedom no longer could remain in a way it was after Oarai smashed their last attempt at achieving anything in Sensha-do. However, a likely enigmatic source of change happen to come in aid throu accident, causing another ones to follow thanks to very peculiar girl earning an even more peculiar being in her soul...

After completing the 2 main Undertale routes. Lincoln isn’t the same person anymore. As something happens to him that even slightly changes his appearance. How will his sisters react? Will they accept him for having determination powers after being gone for so long?

Error, the former god of destruction got himself an interesting friendship. He's friends with the pirates that has chaotic tendencies. I do not own One Piece nor Undertale. Be mindful that Error is different from the OG FGOD Error. He has friends.

What if Frisk from Undertale went to the world of One Piece? See what happens as Frisk goes on a new adventure!

Summer and Autumn were very close because both of them are twins... Years passed by, Summer was sent on a mission and didn't came back, Autumn Rose who came from a far location had gone back to Vale to meet her family and lastly her twin, a shocking news that will break Autumn's heart will change her forever however she won't stop until she sees her whether dead or alive

Sans and Papyrus were kept as prisoners in the Royal Castle since they were toddlers. They were supposably meant to be the subjects for an experiment. But unfortunately, on their seventeenth birthday, something strange happened to them. As they wander through the dark depths of the forests, they encounter dragons, wyverns and other things, searching for their meaning of life.

It's been over two years since Frisk fell to the Underground, and was adopted by the Dreemurr family. One of her former foster parents has finally noticed, and come looking for her. Now, if Frisk can't find a way to bring her families together... it might just tear her apart. Book Three of The Underground's Saviour

Stories speak of a mountain where children have gone and never returned, unknown of the mystery which lies within it. Now history repeats itself as a child falls but with a twist as another joins...and to think a mild stroll got him into something thought of as fairy tales.

my next vs fic! here we have two guys who are skilled fighters, but way too nice for their own good! so obviously let's put them in a fight to the death! we have the wannabe royal guard captain Papyrus, and the wannabe number 1 super villain Giovanni Potage! (watch epithet erased if you haven't already!) once again, omm and dbx inspired, no research, only death!

The Barrier has finally been destroyed, though what it cost were the lives of all the monsters at the hands of one. What would happen if a bloodthirsty monster like that was released into the world still recovering from the calamity that was Muzan Kibutsuji?

Compa and Iffy were discovering a new mountain called mount Ebbot but they wind up falling into the cavern where the monsters reside. Would they have to fight to get free, or are these monsters not like the ones in Gamindustri? Will the folks in Gamindustri try to save them? Is there a dark secret in these Caverns? Will the two girls know what to do when the time comes?

The Underground had seen an incalculable number of resets. Frisk, Sans and Flowey are tired of each reset, but in one reset, two new people fall into the Underground. Will these two break the cycle or will they become a part of it?

Cameron thought that he could try to alter the past and stop what happened, but his own machine was used against him, and ends up in a whole different world than he used to now. Now he has to survive what is thrown against him, and find out what is in store for him.

BleachXGoreTale(Undertale) Un debastado Ichigo Kurosaki de 12 años vive su vida un infierno en la tierra ya que esta esta debastada por la guerra... pero termina cayendo al subsuelo, uno infestado por un virus que hizo enloquecer a los monstruos, con su confiable espada, una fantasma malvada y su determinacion, ichigo lograra sobrevivir? / M / IchigoxChara/ Op!Ichigo mas tarde

Jaune Arc climbed a mountain outside his home village. He fell into the famed mountain. Now he needs to find a way out. But things are rarely easy, so he has to take on an odd gauntlet within Mount Ebott. Monsters aren't always Grimm, and not always bad either. All he can do now... is remained Determined.

This is a story of Percy Jackson falling into the world of Undertale sometime after the Heroes of Olympus series. He goes through the journey of the game you know, but with some twists along the way. In this world, Percy falls down when Frisk normally does. When Sans comes face-to-face with Percy Jackson and sees his insanely high level, how will he react? Find out if you wish.

What happens when you die? Well getting to go to undertale and helping frisk and getting the gamer ability sure as hell is not what I thought would happen. Slow to update.

Sans has gotten himself stuck in the void between worlds in a successful attempt to stop the resets of his timeline. He's not sure how long he's been chillin' alone there, but eventually a chance at escape stumbles his way in from the Veil of Death. His name?—Sirius Black. (no pairings)

Friendship with Susie and Ralsei secured, Dark World saved, Kris is feeling ecstatic. Why, in their opinion, the only way it could be better is if Asriel returned from University early. Then, somehow, they find that coming true too. Things are finally starting to look up for Kris, so everything's going to be just perfect now, right? An AU DR/UT crossover with some angst and fluff.

You know me, fuck summaries

After the Duel Tournament between humans and monsters, the monsters lost. Seven duelists with differing souls got together to seal the monsters below ground. Now, thousands of years later, the lone descendant of the Green soul duelist falls into the underground. Will she finally release the seal and atone for her ancestors? Or will she absorb the monsters spirits into her deck?

Undertale crew are in some weird theater and have to watch an anime called chainsaw man (My first story and have to use my imaginary writing skills for this first try )