The 58-year-old actor is almost unrecognizable as the historic British Prime Minister, Winston Churchill, in the upcoming true-story movie, reported Ace Showbiz.
"Darkest Hour" centers on Winston Churchill who leads a charge against Hitler's army in the early days of World War II.
In the upcoming movie, Churchil's wife, Clementine, will be portrayed by Kristin Scott Thomas.
Lily James has joined the cast as Churchill's personal secretary, Elizabeth Nel, while Ben Mendelsohn has been tapped to play King George VI. John Hurt is also among the cast members, set to portray Neville Chamberlain.