Bob Gunton

as Fr. Wilson O'Rourke

as Ethan Kanin

as William Herndon (voice)

as Horatio Grimes

as Charles Abernathy

as Danny

as The Ghost Farmer

as Harry S. Truman (1 episode)

as Colonel Christianson (1 episode)

as Major

as Mr. Stern

as Jeremiah Davis (6 episodes)

as Maxwell Forrest

as President Sebastián Piñera

as Flight School Instructor

as Leland Owlsley (9 episodes)

as Dr. Benton

as Tony O'Hara

as Dean Alex Monroe

as Nicholas Moore (2 episodes)

as Bert

as Sheriff Brinson

as Cyrus Vance

as Frederick Wentz (1 episode)

as Watson