John Cho is a Korean American actor best known as playing Harold in the Harold and Kumar film series, as well as playing helmsman Hikaru Sulu in 2009's Star Trek.
Because of the meddling and influence of Aku, who promises Mickey that he can help him pay off his debts, Mickey slowly unleashes his dark side to become even more of a threat then even the likes of Xanatos or Omni-Man.