The population of Chatswin is down two people.
Budget cuts on the upcoming season has forced Warner Bros. to reduce the amount of series regulars on the show. However, the insider said that the actors could return as guest stars.
Tudyk plays Noah Werner, single dad George Altman's (Jeremy Sisto) college pal and best friend. Lee plays the Chatswin High School's guidance counselor, Mr. Wolf.
The production cuts are a result of the network paying a slightly reduced license fee for the show's third season, which is currently slated for the midseason. Further changes, which may include more cast cuts or downgrades from series regulars to recurring roles, are still possible.
See photos: Emmys 2013: The Dark Horses
Parker Young, who played Ryan "The Body" Shay, has also moved on to newly picked up comedy, "Enlisted," on Fox.
Tudyk's representatives declined to comment for this article. A rep for Lee confirmed his departure from the show.
The exits were first reported by Deadline.