The Man with the Iron Fists stars a rapper.
Robert Fitzgerald Diggs ( born July 5 , 1969 ) , better known by his stage name RZA ( [ ˈrɪzə ] ) , is an American rapper , record producer , musician , actor , filmmaker and author . The Man with the Iron Fists . The film stars RZA , Russell Crowe , Cung Le , Lucy Liu , Byron Mann , Rick Yune , Dave Bautista , and Jamie Chung .