What if two humans were in the Underground at once? What if one human was DETERMINED to stop the other? What if they could both SAVE? What happens when an Unstoppable Force meets an Immovable Object? When a certain scientist pulls enough of himself together, he finally finds a way to stop the destruction of his world. (Undertale AU. Rewrite of DT.)

The story right after Undertale.

Six years after the monsters emerged to the surface, Frisk is busy with their life of being their ambassador. After an unexpected tragedy, they're soon battling to not just prevent a civil war, but save every timeline.

After getting through the entirety of Undertale and Undertale Yellow, the latter being able to be beaten on every route, Scarlet Johnson wakes up from a slumber to find himself in the body of Frisk and being joined by Chara. And after learning he's in the Undertale universe, but with nods to Undertale Yellow, he needs to get through or die trying. T rated for language and innuendo.

No matter how many times we remake this world, the memories of past friendships still remain. For some of us anyway. These are the tales from the Underground, recalling laughter, tears, and some truly ghastly spaghetti.

Frisk and Chara were supposedly just average kids, living in a world where the human monster war never happened. However, when they find out about alternate universe, it is a literal race against time, to save not just their world, but others too.

The world is destroyed. Strange creatures no one has seen before have swarmed the planet, killing everything save a small band of Monsters, and soon, even they will be gone. Their only hope, a thousand years in the past. Traveling back to the war of humans and Monsters, Frisk and their friends hope to change the outcome of the war to avert this horrible future.

With a quick use of Sans' magic, we had returned to our home on the surface. The lovely three-story home sat quietly among the trees under the moonlight. Sans always loved to teleport just outside the door and glance at it before walking in. He was a little less lazy since coming to the surface. So much to learn. So much to do. So much to love. SEQUEL TO "TWO WORLDS, TWO SOULS"

Clover figured after he sacrificed himself, he'd be absorbed by a monster eventually and break the Barrier. It's safe to say that waking up in the back of another human's head along with another dead child was not what he predicted at all. So naturally that's what happened.

Rodrigo, who just began playing Undertale for the very first time, has to find out which way is best as he ends up in the actual Underground. But when a Fallen Child's soul inhabiting Rodrigo's body tries to drive him to violence, will someone help guide him down the right path? Contains spanking, and minor mention of death, you don't have to read if you don't like that.

Follow Uriel Dreemurr - formerly Frisk - as they live life in the Underground with their family. Making friends, dealing with bullies, helping the royal family heal, its all in a days work for the first Hybrid.

For Monsterkind, the Surface represented freedom. For Frisk, it's a return to some uncomfortable realities. It all began with a simple wish. When that wish faded, Frisk tried to move on. Except, 'moving on' was not so simple. Emerging from the Underground had put them in a worldwide spotlight. From an unknown child, they had become an icon of great value.

What if there wasn't AUs but instead they were all personalities in Sans's multiple personality disorder? Well that is the reality Papyrus and the others are currently living in though they've gotten used to it. With the arrival of Frisk some things may change for all of them. Could she be the key to figuring out how to help Sans? Or will that be the surface? Rated M for themes

Frisk's resets had gotten out of hand- no one even knew why he was doing it. Not even Tessa. But with the threat of a permanent timeline in the balance, Frisk has to stop playing the "hero" of his cousin's life to save the Underground. T because there are many, many heavy topics in their backstories, such as suicide, death, and divorce.

You are a retired vet that visits Grillby's often. 3rd person m/f lemon in ch 4 and 8 so far some knife violence

Inspired by the Arkham Series and OrangeMKNinja's "Spider-Man PS4 Game Overs", we see various last words from enemies towards Frisk as they die in battle over and over again. (Contains Mild Language)

Frisk is a 18 year-old young man who just graduated high school. He arranges a hiking trip with his best friend Jack, which leads to him falling in a mysterious hole. Can Frisk survive the monster realm?

"El jugador" ha muerto... Y ahora todos quieren JUGAR. En la peligrosa Ebott City, radica una constante inconformidad por habitar monstruos y humanos en un mismo lugar., desatándose conflictos delictivos que atentan con la vida de los habitantes. Sin importarle las advertencias de su madre, Frisk decide ir a la ciudad y tener su florería junto con su compañero y mejor amigo Flowey

Twenty-one iterations of W.D. Gaster gambled on plucking a human from beyond their reality to stop a vicious cycle of genocide, and changed the multiverse forever. In a scrambled timeline, away from the grand tragedy of The Angel & The Anarchist, a young woman awakens on a bed of flowers in her pajamas...

While The girls are At The Dentist With Sans Having Their Checkup Both Papyrus And Flowey Get To Spend some Time Together Doing Puzzles And Get To Mail A Letter To An Old Friend Flowey Hasn't Heard In Years.

After Chara eats Way Too Many Chocolates she gets A Toothache So Papyrus Suggests That Sans takes both Frisk And Chara to The Dentist for Their Checkup... What will these Two get themselves In Well, Read to find out!;)

Another Human has climbed the mountain... You need very little knowledge of the game to read this story!

Twenty years have passed since the brutal war between monsters and humans that killed off almost all of humanity. Twenty years and your whole life at that, you've spent underground, waiting to have revenge. But when you are forced to face the truth that perhaps things were far from what they seemed, you found yourself feeling a dangerous connection towards a skeleton monster.

"Long ago, two races ruled over Earth: Humans and Monsters." One race feared for their strong souls, the other for their magic, and the mages caught between them feared for both. All silently knew that war would be inevitable. The only thing that mattered was surviving it. One crimson mage understands that well, and is determined to keep herself and those she cares for alive.

You know all about the souls of Determination: Chara and Frisk. But do you know of the other six souls? Patience, Bravery, Integrity, Perseverance, Kindness, and Justice. In a fresh new take on Toby Fox's mysterious characters, all six souls tell their side of the story, and just how they came to be used to free the monsters.