Collin Chou has informed Sci-Fi Wire that he will be joining the cast of Ninja Assassin, for James McTeigue and the Wachowskis. Who Collin Chou? He played Seraph in The Matrix films (we didn't remember him either).
Chou wouldn't say what character he would be playing, or what the plot will be, but he says he is one of four leads and will start shooting in Berlin next month. Korean pop star Rain is also in the film.