A Thin Line...

Reads 70
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Parts 10
Time 1h 13m

Reads 70
Votes 0
Parts 10
Time 1h 13m

Mature

chara dadster gaster papyrus sans toriel undertale

Quite often, we find ourselves walking a line. That thin line between what's right and what's wrong. The line between sanity and chaos. Sometimes we slip. And the world pays for it after...All Rights Reserved

chara dadster gaster papyrus sans toriel undertale

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10 parts

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Reader insert. What if W.D Gaster didn't just get split between time and space, but actually ended up in your world in an abandoned hospital you called home? Your were a young child he decided to use as experiments to test human determination in said world and breaks physical laws to test human possibility? He knows of the powers you gained from his experiments... all but one, this one allows you to tear realities just enough to teleport into them. Knowing of Undertale you felt bad for the monsters stuck below in their world and wish to help them, but something goes wrong and you end up going to certain AUs and helping them, gaining the attention of some bad skeletons who now desire your power for them-selfish-selfs.

The void in my heart (Gaster X Reader) by InaJSendie

You're a human girl, living on the surface with Frisk, who is your younger sibling. You one day find two children, who's been chased away from neighborhood to neighborhood. And with you're kind soul, you couldn't leave them to live in the streets. You take them in, and meet their father. But will one day, lose them, because of a war. There is some ErrorBerry, and PaperFresh in this too.

FNAF and Undertale Crossover: Nightmares Within by Purpleix

Endless nightmares everyday. They never stop, they keep on coming. 6 hours of closing doors and running. You just wish it could end. You just wish you could end it all. (Pictures aren't mine and belong to their respective owners.) Book 1/3

Love of a demon(fem chara and frisk au's x male reader *DISCONTINUED* by ShadowSans_69

y/n is now 15 years his family was taken away leaving him to fall into a depression which caused him to end it all.find out how this dramatic turn will affect his future life. disclaimer I don't own any of the undertale characters or the photos and videos that might be used here please check out the original artists thanks =)

Pretty self explanatory. This takes place after the Pacifist route in Undertale. Through determination, Frisk was able to bring back Chara, Asriel (Asriel is Flowey per say), and Gaster. I believe that Gaster is the father of Sans and Papyrus. I also don't believe that Chara is evil. The monsters are on the surface, and although they are amongst humans, most humans have accepted them.

Image a world where there was no war. Toriel and Asgore never divorced. Gaster never fell into the void. The genocides never happened. Everyone is happy. That is this world. Gaster is a top scientist in the human government, helping improve the world. Alphys and Sans are his assistants. Asgore, mayor of Ebott and Toriel a teacher. Frisk, Chara, and Asriel their beloved, not dead or murderous kids. Undyne is the chief of police and Papyrus is her lieutenant. Everything is perfect..

You've fallen and you can't get up... (#lifealert reference XD) You dont know where you are. A man made of flames, a couple small children, a child goat, a couple skeletons, and a mother goat happen to be playing frisbee in the field of buttercups you've fallen into. You're stuck here, but it's not all that bad. You have friends, and a new family. Your old one treated you like a Cinderella, with no happy ending in sight, and you're glad you fell down. Then one day... something changed.

This is a story before the last human fell around the time Chara was still alive and well. Humans were not being hunted till the adopted prince's passing, however with a new time line comes a new story and this one is not like the others. W.D gaster a father of two children is called on an unusual discovery, the product of something unknown by monsters or man. The smallest addition to his new life and others around them. With no one but the Gaster family and the protection of the Royal Family, She will learn much about herself and the people around her.

Gaster couldn't help but think of the good times knowing that soon those memories would perish in this war along with many other monsters and humans. Gaster and Grillby had to lead their army to a victory, to defy humans even if their last breaths were spitting on the humans shoes, "Now isn't the time to sit and lick our wounds, monster kind depends on us and if you think siting here and sulking is going to help win the war I have to disagree with you." -Gaster. Warnings: Detailed gore Language #1 in humanandmonsterwar #4 in wartime #3 in Shanta

Across the Timelines [an Undertale Fanfiction] by missdisappear01

(ORIGINAL Version. Not revised) No one ever expected for the timelines to cross, that is, until there were two of them. The lovable and friendly Frisk, and the evil killer, Chara. With an experiment gone wrong, and a strong connection between the two boys, can Frisk and his friends change Chara's view of monsters?

Universal Surface Angel

Reader insert. What if W.D Gaster didn't just get split between time and space, but actually ended up in your world in an abandoned hospital you called home? Your were a young child he decided to use as experiments to test human determination in said world and breaks physical laws to test human possibility? He knows of the powers you gained from his experiments... all but one, this one allows you to tear realities just enough to teleport into them. Knowing of Undertale you felt bad for the monsters stuck below in their world and wish to help them, but something goes wrong and you end up going to certain AUs and helping them, gaining the attention of some bad skeletons who now desire your power for them-selfish-selfs.

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