Wo Fat is the name of a fictional villain in the long-running CBS series Hawaii Five-O. On the show, Wo Fat is the arch-nemesis of Steve McGarrett (Jack Lord), the head of Hawaii's (fictional) state police force. The character appeared in eleven episodes of Hawaii Five-O including the TV-movie pilot and the final episode. Two of appearances were in two-part episodes and three were two-hour specials later re-edited into two-parters for reruns. The character evolved from beginning as a master spy for the Red Chinese, later into a extremist Chinese agent working with a hawkish Chinese general that opposed peace discussions with the United States in the early 1970s, and finally as international super-criminal out for his own interests in the series finale.