Jason Ritter

Jason Morgan Ritter is an American actor who is best known for his roles as Kevin Girardi on the CBS fantasy drama series ' from 2003 to 2005, Ethan Haas on the CBS sitcom ' from 2006 to 2007, and Sean Walker on the NBC series  from 2010 to 2011. He also voiced Dark Spyro in the ' spin-off television series '.

For Disney, he voices Dipper Pines on the Disney Channel animated series Gravity Falls (including voicing most of Dipper's clones in the episode "Double Dipper"). He also played Kevin Finn in the ABC TV show ' and Martin Brockett in the 1999 Touchstone Pictures film '.

He is also the grandson of actor and musician (voice of Big Al), and the oldest son of late actor and comedian John Ritter and older brother of singer/actress Carly Ritter and actor Tyler Ritter and half-brother of Stella Ritter.