Oh wow, Sans dropped into another universe, how original... Wait until you see why AU's are by nature an endless well of mess! (Story begin at G.I. 4.2. Update, actual as of 4.3, anything afterwards isn't going to cause rewrites.)

Adrian Shephard, a HECU Corporal, manages to somehow escape Black Mesa and, after being 'detained' by the ever-so-elusive G-Man, is assigned a mission... in the UNDERGROUND! Accompanied by Chara Dreemurr, the first fallen child turned ghastly apparition, they adventure through for one very specific goal... but is that all there is to it?

He just wanted to leave it all behind and when he thought that his death gave him exactly that, a reprieve from the family he hated, he woke up again. Well, if they cant reach him and only memories remain, then maybe, just maybe he can start over. Maybe he can live a life free of solitude and hatred. Yes, that sounds nice. Gamer/OC Harem

A simple question arose one day. What happens if some fandoms and their events take place in the same universe, on the same planet and in the same world, while somehow intersecting with each other? Now with this answer I want to share with you. It all started with a kind fairy tale, telling about friendship and kindness, and a family where there is a child who owns a power...

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? Spoilers for Undertale and Fnaf Security Breach

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

Remake of my first SOUL Monsters installment! 2 years after releasing Mt. Ebott from the barrier, Frisk wins a contest hosted by Kaiba Corp. to gain tuition at Duel Academy. What awaits her are new friends, new rivals, and perhaps even some love while dealing with two shadowy groups known as the Shadow Riders, and Gastly Shadows for the Sacred Beasts. FemFrisk. FriskxChazz

Meloetta gets hungry and wants to have a bunch of spider cookies from Muffet who challenges her to a match.

"This was never meant to happen, you should have just brought them back." Player said as he went to delete her , but then something caught his eye. The Monika lover smiled as he looked at the Heart. "Maybe you can still learn." He moved her file over to UNDERTALE and opened it's files. He was finding a spot to put her, hovering over Frisk's. Then the lightning struck them..

It was any other day in Gensokyo, the land of fantasy. That is until a mysterious child appeared, falling from a great height and injuring themself. Reimu, the Maiden of the Hakurei Shrine, took the child in to heal them. Frisk, now part of this new world, seeks to explore it. Both don't know that this appearance will lead to an upheaval of Gensokyo's powers.

They just wanted to be themselves. Their parents didn't listen. They didn't understand. When their parents wanted to send them to a conversion camp, they decided it was time to run away. After an incident in the nearest national park, they find themselves in world of monsters and magic. Then, along their journey, they make friends and find themselves too.

Kai Smith. In the Underground. Surrounded by monsters unlike anything he's ever seen before. All sorts of shenanigans ensue. This should be pretty self-explanatory, let's be real here.

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?

Frisk succeeded in freeing the Underground from the Barrier, and all is freed back to Tamriel... too much they see is wrecked with strife from the Thalmor, and now a Dragon Menace. Teamed up with Jin, a former Soldier of the Imperial Empire, and the fated Dragonborn, they all travel to stop the Dragon Meance, and the Thalmor in a unlikely alliance. (Pairings Undecided)

Welcome to the world of Mt. Ebott, a world populated by humans on the Surface, and Monsters in the Underground that were sealed away many years ago by the Humans. Our keyblade wielding adventurers Rick and Chloe find this world the first of many on their adventures, what sort of dangers await them? What sort of friends will they meet? Come along and find out.

Finally finding an escape from the world of Don't Starve, Wilson finds himself in a world unfamilliar from the one he knew before. He isn't alone, though, Frisk and the monsters he calls his family will be there. Somehow... Wilson P. Higgsbury knows this won't be as easy as keeping himself alive in his old prison.

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)

Izuku falls into the underground...

On the day Izuku would have received One For All, another path was taken. After the boy failed to save Bakugou and was berated by the heroes, Izuku left for Mount Ebott on the edge of Mustafu. Taking Bakugou's advice he plummets into the mountains in hopes of a quick end. Unknowing he was in for an adventure of long forgotten history and lost magic.

Fem!Harry is abandoned by her relatives at the summit of Mt. Ebbot, these are her adventures into new lands and new abilities. no pairings (so far) Dumbledore is.. not great. Minor dates have been shifted. This story is not beta-read. Please leave reviews and constructive criticism ON HIATUS NOT BEING ABANDONED

nosso protagonista morre e toma o lugar de rocky na trama, mais..e se ele não fosse uma rocha?

I don't own Undertale or MHA. They are owned by Toby Fox and Kohei Horikoshi respectively. I'm rather garbage at summaries and descriptions, so I guess you'll have to read to find out.

Finding himself in a new body after committing suicide, Akaza sees the struggle of survival through the memories of his new body. He never thought he could redeem himself, but the opportunity seemed to be a gift from the very gods that had forsaken him long ago. Hopefully, this time around he can be worthy to join Koyuki in the after-life.

(Rewrite of Ulrich's idea) Frisk Dreemurr did the impossible and freed the monsters from their prison under Mt. Ebott. She saved all of monster kind and even went the extra mile to try and bring back Chara and Asriel and succeeded. Now on the Surface the three Dreemurr children have a new goal, becoming three great Entertainment Duelists. Co-Write with Ulrich362

This manifesto is only made to be better than J.D. who made the loud house revamped. Any haters will be welcomed with open arms because this story is made intentionally bad. Anyone who likes this story will be added to the story and promptly killed, because you are wrong. also bqq is spelled wrong intentionally.