The character appeared in eleven episodes of the original "Hawaii Five-O" including the TV-movie pilot and the final episode. Two of his appearances were in two-part episodes and three were two-hour specials later re-edited into two-parters for reruns. The character evolved from the beginning as a master spy for China, later into an extremist Chinese agent working with a hawkish Chinese general. The general opposed peace discussions with the United States in the early 1970s. By the end of the series, Wo Fat had become an international super-criminal out for his own interests. In the last episode, Wo Fat is finally arrested and jailed after 12 years as a wanted criminal. However, in the final shot, he smiles and craftily produces a file hidden in his shoe. It remains a perpetual cliffhanger.