Have you ever seen that show called ghost adventures, me too.

Caillou is just a boy...isn't he? Credit for this story goes to Extant and MATHMAN

W.D. Gaster, the royal scientist for King Asgore. He has done many experiments, most being successful, though some ended in failure. This time, Gaster has been working on an experiment to create living monsters! He has been successful once, creating a beautiful child with wings that he wishes to give to the king. The second time? Two skeletons, brothers, his sons... Follow the angel, (Y/N) throughout her journey. From her childhood with the skele-bros, to her returning from a long mission from the king.

angst angst-- fluff fluuffff fluff AYYYY, This is my story a fallen human, reaching the surface, with her "Family," as she grows older she discovers her job as an ambassador. she also realizes that she might love her best friend. (In this story frisk is genderfluid, but usually sticks to female pronouns uwu)) ((art by my best friend, you can find them @fairyfun099 )) ((maybeeeee nsfw later in the chapters we'll see))

One human. One skeleton. One flower. The human won't give it up. The skeleton wants more. And the flower.. The flower wants to end it. -=- Please don't go about hating on people who like the ship or fanfictions about it. It's fine that you have your opinion, just don't hate on people for what they like. ( Not directed to all anti-Frisk X Sans shippers, just the hateful ones. ) Also, read the Author's Note chapter for information about Frisk's age and gender.

(Sequel is now out!) The world is once more reset and once more the monsters make it up to the surface. Sans hates Frisk for ripping away everything from them again. But is it really Frisk causing the resets or something entirely? (Female Frisk X Sans)

Frisk just wants Sans back. After Chara forced her and Sans to fall through the hole in Mt. Ebott, something happened to him. He's not here anymore, but this stranger claims to be both Sans and Dr. Gaster. Together, they continue through the underground, hoping to keep Chara at bay and find a way to bring back Sans. But what if they can't bring Sans back? And what if Frisk falls for this stranger? Adult!Frisk x Sans Adult!Frisk x Gaster!Sans

This Undertale fanfiction follows the lives of various members of the Monster gang.