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.

Comicmaker12 from Wattpad Wow Undertale AU story's. Makes me wonder 😏also hi I'm Comicmaker12. I've written many chapters from 2018 to 2021. Beware of some cringe xD Instagram = t_en_u Twitter = Artist_Peaceful For help: click on my profile !Read the tags for information!

(DISCONTINUED) It was your normal, average day. You were staying at a friend's place while she was away on some adventure in Europe. Next thing you know, some uninvited guests show up and are unable to leave. Why? Well, who knows? All you know is that you've got to deal with them for as long as they're staying. Having some excitement mixed into your life is good, right?

Y/N, a girl who is bullied, accidentally falls down a mysterious hole, spooked by an unknown force. Meanwhile, she meets a timid flower, who leads her through the dark underground. Brave and tough, she expects herself to survive the odd challenges of the underground; but how far will her courage bring her? Will she ever get home? Will a certain skeleton in boots make her want to stay? Spoilers for just Undertale in general. There will be some (eventual) fluff, just a warning (づ⌣ω⌣)づ I do NOT own any content besides the story. All characters and images belong to the original artists and creators. Thank you.

You've heard the stories, of the mysteries of a man who guides lost ladies home by night legend says his voice is like a demon of hell and anyone who's ever approached him has died. One night you get lost and you uncover his real story

A series of semi-realistic scenarios including a handful of Undertale characters. In otherwords, stick around. ... Please.

What would happen if instead of Frisk, the crying child from FNaF fell down Mount Ebbot? This is the story of Daniel, a poor, crybaby 7 year old and his weirdly sentient plushie, Fredbear, and their adventure through the UnderGround, and the world above it.

Sans knows a lot about secrets; he hides many. But when old burdens emerge from the darkness, secrets, new and old, put his brother in danger; and what else can a good big-bro do but begin a double life? This decision haunts him, even years after his suit of armor is stocked away and hidden, after his quaint life of depression, puns and resets are set to loop forever, and his part in the war is forgotten... But then, the barrier is broken. And it is quickly realized that this is not the end, but a beginning of something new. Something that feels like dust, blood, and a suit of armor; an old lie to slip into once more. (Currently being completely overhauled! Anything without a chapter title (ex.: chapter 4, chapter 5, etc.) is old and will be re-written!)

After Frisk goes missing, Caitlin, Frisk's twin sister goes looking for her in the the last place she saw her. MT Ebott, the mountain of dark legends, she finds a necklace that belonged to Frisk on the ground. Just like Frisk, Caitlin tripped and fell into the Underground. Caitlin finds things she never knew existed.

Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister.