Peter Donat, a Canadian-born character actor who played a wide variety of classical and contemporary roles in theater, film and television, died on September 10, 2018 at his home in Point Reyes Station, Calif. He was 90. Mr. Donat was best known in recent years for his recurring role as Agent Fox Mulder’s father in six episodes of “The X Files.” Pierre Collingwood Donat was born on January 20, 1928, in Kentville, Nova Scotia, Canada, preferred theatrical work. He performed frequently with respected companies like the American Conservatory Theater in San Francisco and the Stratford Festival in Canada. Over the years he played Cyrano de Bergerac, Prospero, Shylock, King Lear and Hadrian VII. Donat appeared as Mr. Johnson in the Euro-western TV series “Adventures in Rainbow Country” (1969).