Khigh Alx Dhiegh was an American television and motion picture actor of Anglo-Egyptian Sudanese ancestry, noted for portraying East Asian roles. He is perhaps best remembered for portraying villains, in particular his recurring TV guest role as Chinese agent Wo Fat on Hawaii Five-O, and brainwashing expert Dr. Yen Lo in 1962's The Manchurian Candidate.

Hawaii Five-O is an American police procedural drama series produced by CBS Productions and created by Leonard Freeman. Set in Hawaii, the show originally aired for 12 seasons on CBS from September 20, 1968, to April 8, 1980, and continues in reruns. At the airing of its last episode, it was the longest-running police drama in American television history, and the last scripted primetime show that debuted in the 1960s to leave the air.