Dipper and Mabel were raised in Gravity Falls. When they were born with the bodies of a deer and a fish, and they were shunned by their parents and shipped to their gargoyle-like Gruncle Stan. There they were with others like them. As they grow Dipper vows to unravel their homes mysteries and stumbles upon a hunter named Bill. Though this man is not all that he says he is. Bill is a demon and helplessly in love with Dipper. It seems to help when Dipper feels very much the same way. How will this new romance turn out? Read and find out! ~~~~ My first Gravity Falls story and this Monster Falls AU. This is a billdip story with some background ships. Some are Pacifica x Mabel and Robbie x Wendy !!I DO NOT OWN ANY OF THE CHARACTERS JUST THE PLOT!!

After weirdmagedon, Dipper and Mable leave to go home, it's the last day of school all ready and the mystery twins soon find out they are going BACK to Gravity Falls, Or.

The one who causes death, Bill Cipher. The ones who bring life, Dipper. And one who keeps the peace between the two, Mabel. Life and death, exact opposites each one barely able to dominate the other. Some say their enemy's fighting for power, others say there friends staying out of each other's way. But just a few know the truth about Life and Death and it maybe time for others to learn as well about the relation Dipper Pines and Bill Cipher shared...

Dipper is an aspiring author looking for work on the sea for something to write about. He is going around a port city asking around on different ships one night when he stumbles upon she ship of the Demon of the North Seas, Captain Bill Cipher. He is taken prisoner for a night, not knowing whether he would live or die. But Bill allows him to live if he becomes part of the crew, and he starts taking a liking to the brunette. I said I was going to do a series of Billdip one-shots next but I lied (apparently). I got this idea and I couldn't stop myself! This is a thing that's happening now XD I'll still probably do the other thing on the side as well. Rating: 13+

[COMPLETED] This was Dipper and Mabel's 3rd summer in Gravity Falls. They where both sixteen years old. It started out as a pretty normal summer until the Pines family started finding evidence of Bill's existence. Is Bill really back? What is he planning? Find out in my story! Hope you enjoy

Book 1 in a 3 Book series... Dipper and Mabel Pines are back in Gravity Falls for another summer. They may be sixteen, but the thrill of the mystery is still there! For the past few weeks, Dipper has gotten little to no sleep. Ever since returning to the Mystery Shack, his dreams have been tormented by a certain dream demon... One day, a stranger arrives at the door of the Mystery Shack. Yellow and brown hair, a triangular eyepatch over one eye, a grin on his smug face, the stranger lets out a laugh. "Long time no see, Pine Tree!" Having somehow been trapped in human form, Bill Cipher makes a deal with Dipper... Bill drives Dipper to the brink of insanity with his violent humor and overall aggravating personality, but there's something there making it impossible for Dipper to deny him help, and it isn't just the deal they made... A/N: The style of Human Bill in this story is Life-Writer's style! So...yeah! Just so you know, and so I don't have to try and describe him!

(This is my first Billdip fanfic so...enjoy!? :D Sorry if there's mistakes TTnTT I'm only human and I wrote this when I was 11/12 and I was a thirsty fangirl so yea...) •~•~•~• Dipper and Mabel finally come back to Gravity Falls after four long years and everything has changed.Dipper meets a guy named Thad and Bill gets jealous of Thad because he thinks Dipper like Thad more than him.Soon,Bill takes Dipper away from Thad and it's a battle to the death to win Dipper's heart. (Big Thanks to my Bestie in the admin world,Cathy Castro.I wouldn't be writing this fanfic if it weren't for her.)

Bill becomes human and is suddenly lurking around gravity falls. As bills ignorance to human bodies overplay his goal Dipper finds him on the brink of death, for starvation,and dehydration ......or whatever demons do. And then Bill gives Dipper some peculiar attention.

Bill comes back to Gravity Falls where Dipper now lives studying the unnatural events. When Dipper finds him Bill agrees to help him with his research.

I own nothing but the story! All fanart is not mine and I don't own gravity falls! p.s sorry I suck at writing 😜