<Li> Keanu Reeves as Kai, an adopted outcast in the household of Lord Asano who joins the Ronin . Reeves' character is half - Japanese and half - English; the character was created for the film . </Li> <Li> Hiroyuki Sanada as Oishi, the leader of the Rōnin . </Li> <Li> Tadanobu Asano as Lord Kira, Lord Asano's rival daimyo . </Li> <Li> Rinko Kikuchi as Witch, an odd - eyed sorceress who serves Lord Kira </Li>

Who played the big samurai in 47 ronin