The actor "Don X-Files" Peter Donat died at age 90

Peter Donat, the Canadian actor who played the father of agent Fox Mulder in "The X-Files" and starred in TV shows, movies and on stage, has passed away. He was 90 years old.

His son, Caleb, told The Associated Press that his father died Monday of diabetes complications at his home in Point Reyes Station, California.

Donat has also starred in TV series such as "Murder, She Wrote", "Hawaii Five-O", "Hill Street Blues" and "The F.B.I." He also appeared in Francis Ford Coppola's films "The Godfather Part II" and "Tucker: The Man and His Dream".

Pierre Collingwood Donat was born January 20, 1928 in Kentville, Nova Scotia. He changed his name to Peter while he was working in the United States.

David Duchovny, who played Agent Mulder, told the New York Times that Donat "had an engraving facility as an interpreter and seemed to come from this generation that took art seriously but not too much."

"The X-Files" was launched from 1993 to 2002. Fox relaunched the series in 2016.

Donat was previously married to actress Michael Learned, winner of Emmy, who played Olivia Walton in the CBS drama "The Waltons".