Tatsuya Nakadai
Kurosawa originally cast the actor Shintaro Katsu in the title role. Katsu left the production, however, before the first day of shooting was over; in an interview for the Criterion Collection DVD, executive producer Coppola states that Katsu angered Kurosawa by arriving with his own camera crew to record Kurosawa's filmmaking methods. It is unclear whether Katsu was fired or left of his own accord, but he was replaced by Tatsuya Nakadai, a well-known actor who had appeared in a number of Kurosawa's previous films. Nakadai played both the "kagemusha" and the lord whom he impersonated.