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.)

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.

Here we are we made it. The Underleague, the most difficult challenge for any pokemon champion out there. 8 Gyms, 4 Elite members, 1 ultimate pokemon master. Their latest opponent? A...ten year old kid, without a license and and little eevee...Um is-is this normal? Oh, so your Frisk and you literally fell down here? Well in order to get out you have to go through the league. Sorry

Harry didn't know where he was all he could see was a empty void of white all around him and a red string This is a Under/source Harry potter crosssover

When the spirit that possessed the puppet and his gang of toys are on there way to be destroyed fate interferes and know they are going down into the underground. now will the spirit be able to save his new friends from the horrors of the animatronics or well he be too late

This is a Harry Potter/Undertale story where Harry is Frisk this will also be going a little bit into the Undertale Genocide or rather Glitchtale from youtube that I found it will some what resemble that but I'm hoping I can put my own personal spin to this see you guys in the story this was my first attempt on this story I will soon make a new version for why check last chapter

A backstory before the start of A Silent Gaze, this is part 1 of DeltaTale Series contains angst. (Human/Monster Relationship) (Cross post at AO3 & Wattpad)

After the Warden's intervention in the primary timeline, a once-lost branch, mysteriously erased from existence, reemerges, hanging precariously on the edge of oblivion. In its delicate state, it reveals long-concealed events, unveiling mysteries that predate the main storyline.

Mt Abott suddenly appears out of nowhere and Cuphead, dragging Mugman along, runs to the mountain to investigate. Soon they fall into the chasm and are attacked by the monsters of the underground. As they explore, they discover a tragedy that befell the underground, make friends along the way, and have a bro jolly fun adventure of a lifetime. Cover photo by me.

In a bizarre turn of events, Izuku Midoriya's story of becoming the greatest hero was hijacked by two eccentric bony brothers. The two bros stop at nothing to make stupid jokes and pranks towards the boy while also dragging him into a series of absurd adventures that would make his journey that much more interesting. (I do not own the Cover. Substitute. Image made by Bella61068317)

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

In a world with Humans, Sorcerers, Monsters, and Cursed Spirits a new story unfolds with familiar characters. A fallen human child faces a hidden underground world of monsters whose existence could change society as a whole, and perhaps... even his destiny.

He is.

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

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.

Three Observers from another Multiverse enter unto this realm, watching the rise and fall of humanity, from their glory days under the Emperor to their inevitable devouring by the all consuming Tyranid Hives. Seeking to experiment on this reality, Gaster, one of the observers, interferes with the flow of time and space, both in Real Space and even in the Warp, to change fate.

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

A story about me in the Fantasy World

The evil Luke from Street Fighter 6 sings an evil song about how evil he is!

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 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..

Frisk Dreemur & Shinji Ikari...What happens if a girl who wants a different ending meets a boy who doesn't believe in humanity? This unforeseen outcome gives them both a second chance. Will they succeed, or are they doomed by their fate? Shinji X Frisk X Asuka X Rei

Moments of the cast of WHDAAA reacts to Undertale as Subaru's past. (Not a full reaction fic, just moments of what could the reaction fic look like)

When Sam and Dean fall into Mt. Ebbott on the search for a lost child, they encounter several new beings. A demonic flower, a friendly goat lady, and even some weird skeletons. Sam and Dean have plenty of fun trying to find their little friend, but when they learn the true secrets of the Underground, they realize their search is more desperate than they though.

It was another meaningless day, in her meaningless life. In a mansion of Pure White, Oh Snowflake untainted by the outside world, a world she cannot ever reach. So she dreams of a life where freedom is at her reach, freedom she isn't the only one to seek... Cover Art by me. One shot story.