Of Hungarian-Philippine heritage, Barbara Luna was a stage actress from childhood. In 1949, Luna was cast as one of Ezio Pinza's children in South Pacific; she can be heard on the original cast album, singing the Pulitzer Prize-winning musical's opening number "Dites Moi, Pourquoi?" She went on to appear in such Broadway productions as The King and I, Teahouse of the August Moon and A Chorus Line. In films from 1958, Luna has usually been seen in exotic ethnic roles in films like The Devil at Four O'Clock (1961) and Five Weeks in a Balloon (1961). Star Trek fans still send her complimentary letters for her performance as Marlene Moreau in the 1967 ST installment "Mirror Mirror." Her most recent film credit was 1992's Lady Against the Odds. Barbara Luna has been married to actors Doug McClure and Alan Arkin.