<Tr> <Th> Years active </Th> <Td> 2008--present </Td> </Tr> <Tr> <Th> Known for </Th> <Td> Gravity Falls </Td> </Tr> <P> Alexander Robert "Alex" Hirsch (born June 18, 1985) is an American writer, animator, voice actor, and producer . He is best known as the creator of the Disney Channel / Disney XD animated television series Gravity Falls, where he provided the voices of Grunkle Stan, Soos, and Bill Cipher, among others . He also earned BAFTA and Annie Awards for the series . In 2016, Hirsch co-authored Gravity Falls: Journal 3 which appeared on The New York Times Best Seller list for nearly a year . </P> <P> Hirsch was born in Piedmont, California in 1985 . He graduated from Piedmont High School where, as a junior, he won the school's annual Bird Calling Contest in 2002 and appeared on the Late Show with David Letterman . </P>

Who does the voice of grunkle stan in gravity falls