Jason Morgan Ritter (born February 17, 1980) is an American actor. The son of John Ritter and Nancy Morgan, he is known for his work in television series such as Joan of Arcadia (2003–2005), Gravity Falls (2012–2016), Another Period (2015–2018), Kevin (Probably) Saves the World (2017–2018), and Raising Dion (2019–2022). For his portrayal of Mark Cyr on NBC's Parenthood... Wikipedia