Gravity Falls is a series about two twins who go and see their uncle in the town named Gravity Falls ; they are going to discover that this town is not really normal.

the characters are :

-Mabel : Diper's twin

-Diper:Mabel's twin

-Stan : Mabel's and Diper's uncle and owner of the mystery shack

-Soos :the cleaning man of the mystery shack

-Wendy:the girl who works part time at the mystery shack