On Broadway, he appeared in the original cast of the Stephen Sondheim musical Pacific Overtures. He was one of the earliest members of East West Players, an Asian American theatre group founded in 1965. In 1995 he founded the Korean American theatre group, Society of Heritage Performers, which later evolved into the present Lodestone Theatre Ensemble.
Since 2005, he had been a chair professor at Seoul Institute of the Arts.
He died in Los Angeles on 4 April 2018 at the age of 85.
