One shot stories based on prompts and requests. What more can I say? Rules in the first chapter, make requests in the first chapter comments. Enjoy?

Welcome to my little Undertale story about Frisk having strange yet familiar dreams that bring back possibly the biggest villain in the Undertale universe! P.S. I know that Frisk and Chara are non-gender characters, but for the sake of this story, I will refer to Frisk as a girl and Chara as a boy. Disclaimer: There may be some spoilers to the Pacifist ending of Undertale.

As Frisk resets the game, she finds herself in trouble as a part of her takes over and she becomes filed with anger and pleasure to kill. How did she do this? Well, thats the thing, no one knows. Only the new Frisk; Chara will know how...

*ring ring* "Hello?" "It's been ten years..." "How's it going?" "Papyrus misses you..." "So does goat mom..." "...I miss you..." "...the barrier isn't coming down for a while..." "By a while I mean decades..." "But it's felt like decades after you left..." "...sigh..." "I guess I should say something else..." *click* (DISCLAMER) (I have not played undertale but I have watched about the whole game. If I get some information wrong please don't scream at me. I hope you enjoy my story and I might write more undertale. Please comment on what I can improve and if there is anything I missed. THANKS!!!!!)

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, The son of Gaster the Royal Scientist. A gifted boy who must find a away to accept the absence of a father and given the Underworlds fate by his fathers crypted messages through a strange and confusing alphabet. Sans must decide is it worth bringing back his father but putting the fate of the underground in jeporday. Or will he save everyone else and let his father rest behind?