Grunkle Stan

Stanley "Stan" Pines, also known as "Grandpa Stan", and formerly known supposedly as Grunkle Stan by the alias Stanford Pines, is a main character in the 2012 Disney Channel/Disney XD animated series Gravity Falls, created and voiced by the series creator Alex Hirsch. There is a chance to Stan to be Dipper and Mabel's grandfather since there are small hints in the series. Besides, in an interview, Alex Hirsch stated that Grandpa Stan was loosely based on his grandfather, also named Stan.

Stan is the grandfather of the show's two main protagonists, Dipper and Mabel Pines, who are sent to live with Stan at the Mystery Shack, his house and tourist trap which presents creatures and objects of supposedly supernatural origins. He is most often depicted wearing a black suit, white shirt, red string bow tie, red fez, and a cane topped by a billiard 8-ball. At home, he is usually seen wearing slippers, blue and white-striped boxer shorts, a white tank top and a gold necklace.

At the beginning of the show, Stan, known as Grunkle Stan and Stanford Pines, is portrayed as a relatively simple character, with his shady past being used primarily as a joke until later in the series. In the episode "A Tale of Two Stans", his real name is revealed as Stanley Pines, who spent 30 years covertly working to bring his twin brother, the real Stanford Pines, back to their reality after being sucked through an inter-dimensional portal.