Harold Perrineau (born August 7, 1963) is an American actor known for the roles of Michael Dawson in  the U.S. television series Lost, Link in The Matrix films and games, Augustus Hill in the American  television series Oz, and Mercutio in Baz Luhrmann's Romeo + Juliet. He recently starred in ABC's  comedy-drama television series The Unusuals, playing NYPD homicide detective Leo Banks.