A while ago to prove the legend was trueLincoln had accidentally fell into a mountain called Mount Ebott and met the monsters and made some friendsAfter completing the True Pacifist Undertale route, Lincoln had gotten curious, what if instead of Sparing everyone… he killed everyone? And this time… things will be slightly different than normal Undertale..,

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)

Harry James potter the master of death has seen many things. Through his many years of being alive, while trying to run away from death himself his responsibilities as master of death, but walking up as a skeleton and being in a house surrounded by other skeletons and while the only human in the house keeps harassing him.

Naofumi ends up in the Underground with no idea how he got there or what he was trying to do before that. What will he do in a world where the monsters are trapped and the key to their freedom is taking his soul?

Who knew dying could offer new possibilities to monsters? Or more like a second chance like humans have? Now, it sounds cool if only it wasn't for the fact that I have been transported to Hell... as a Human itself. And why is this other smiler so interested in me? Oh well, at least it's a beautiful day outside.

Before crashing the wedding, Issei has been having dreams of another life. A life of talking skeletons and fighting monsters. He now wishes to regain his memories and help those that truly need a true king, Ravel and others. His SOUL is filled with BRAVERY. (Evil Rias and Dusttale Sans) Martial Artist Issei! Issei x Ravel x Riser's Peerage Harem

El el año 2138 despues de 12 años de servicio YGGDRASIL cerrara por fin sus puertas , bueno, Se suponía que eso pasaria ,Sin embargo un jugador asalariado en ves de ser expulsado del juego , fue arrastrado a . . . Una cueva ? Encima de una cama de flores ?

The Avatar has the greatest power of all. Determination. The ability to persist through even the most trying of circumstances. But with the weight of the world on his shoulders, and an equally determined princess after him, will it be enough to restore balance?

4 years since Asriel was reborn and now he is a 16 year old, who is now being transferred to Cherryton Academy! Due to Asgore could do nothing about certain school systems, Asriel chose this way to finally to get a high school education. Something sinister goes down in the school and he is involved whether he likes it or not. Can he and his friends solve this crime in time?

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

The town called Hometown isn't Papyrus's home. But until he can find his way back to his universe, he'll cheer up the melancholy ghost who sounds like Mettaton. (Papyton AU where Undertale's Papyrus ends up stranded in the Deltarune universe.)

Two people from our world were going about their business when they individually get kidnapped and they find themselves in the world of Undertale. While traveling undertale one of the two people manages to return to our world briefly and reunites with someone close to her but they get captured after putting up a fight and end up back in undertale.

(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

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.

Frisk and Susie are left reeling from their adventures in the Dark World, but there's no time to take a deep breath. As the Knight blows another fountain open, Frisk and Susie, along with little sister Tina, Berdly and Noelle, must seal it and stop an "evil" queen from taking over. And who is the man beckoning from Frisk's dreams, the one who speaks in hands?

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: CosmicPixel (Twitter)

A young girl named Arial discovers she is a halfling. Half witch, half skeleton. This is her story. There will be adventure, horror, and most of all, skeleton puns. Sans and Arial are sister and brother, and the first few chapters will be not that Undertale-y. I will try my best. This is my second fanfic. (other is still in progress also btw). My OC is in the place of Harry.

"Where the fuck are we?" -A quote from Chara

Just my take on a Kirby Undertale AU. I've been thinking about this for a while and have most of it planned out, so chapters will probably come out on a daily basis unless I'm way too busy or I'm not motivated. Feel free to let me know if my writing looks weird or characters don't act right, and I'll probably fix it. Updates on hold because I'm not motivated & I'm busy w/ stuff rn.

/\A Two Kinds x Undertale Crossover/\ On the journey to the Basitin Isles, Trace's voyage is intercepted by a mysterious storm, which was not predicted by Captain Eric's navigator. Hesistant to stray too far off-course, they decide to brave the storm- only to find themselves seeing into another universe. There, they traverse into a world entirely hostile to them...

The Monsters of Mt. Ebott were trapped underground at the end of a war in millennia past, and now that they've been freed, they're walking into another one. Amidst Monster abductions, time travel and a 12 year old in the United Nations, Harry Dresden's expertise as a Wizard is required to help educate them on the workings of the modern magical world. (Dead Beat/Post Barrier)

Sequel of "The Hope Reborn". Years after Illaster's defeat the Princeton Family seem to do unfinished business with the Anomaly, and Agate who escaped, and are facing a new threat from the Barians, and the Number cards with allies from Astral World, and Yuma Tsukumo. Co-Written with Ulrich362. SharkxOC, RioxOC, YumaxCathy

An interdimensionally lost Touta Konoe jumps down a hole to find something, anything, that might take him home. But instead of an ancient artifact or magical gateway, he finds an adventure, and new friends. Spoilers for up to Chapter 120ish of UQ Holder! and for all of Undertale.

Sans has been killed by Chara once again, except this time when he wakes up he's no longer in the underground. He's in a new world that seems entirely different. A world full of people he has never seen before. What adventure awaits him? What will happen as he travels? And will he make it out alive?

As Sunny says goodbye to Faraway Town, he and his mother move onto Ebott City to start a new life, hoping they can leave behind everything and finally have a happy life. But that's what they thought. Sunny, along with his mother, discovers their new home is a place where humans and monsters co-exist with each other.