Annabeth "Ann" Anderson is a resident of Gravity Falls, Oregon, and a paranormal enthusiast, as well as the town's major laughing stock.
Ann is a typical-height 12-year old girl, with blonde hair wrapped up in a ponytail. She wears an orange jacket, a red shirt with a flying saucer on it that reads "UFO's - They're already here", and maroon pants and dark gray boots. She also wears a pair of glasses.
Ann is your typical geek/nerd, except a little different. She is obsessed with cryptozoology, ufology, and the paranormal, and is constantly mocked by all the residents of Gravity Falls as being insane. She is also rather stubborn, sticking with any idea she might have. She is also slightly sensitive, her first reaction to seeing something disturbing or frightening is usually fainting.