In 1962, he appeared on CBS's "Perry Mason" as Dean Chang in "The Case of the Weary Watchdog". On September 23, 1963, Hong hit the prime time slot playing spy Wen Lee in, "The Hundred Days of the Dragon", the second episode of ABC's "The Outer Limits" first season. That year Hong also played Louis Kew in "The Case of the Floating Stones". He also appeared three times on the NBC military sitcom, "Ensign O'Toole". In 1964, he appeared in an episode of "Kentucky Jones". In 1965, Hong was one of the original founding members of the East West Players, an early Asian American theatre organization. Also in 1966, he played the bar owner Mr. Shu in "The Sand Pebbles". Hong also appeared in several episodes of the original "Hawaii Five-O".