He is the twin brother of Stanley Pines, with whom he was very close since he was his only friend from childhood to adolescence, however they distanced themselves because Stanley accidentally ruined the project Stanford to go to the university of his dreams, causing Stanley to be kicked out of home. He was born with six fingers
He decided to go to Gravity Falls after graduating from another university, because he became interested in the paranormal because of his deformity and that town had it