Patrick Adiarte, who was imprisoned as a baby in the Philippines during World War II and then found a new life in the United States as an actor and dancer on Broadway, in Hollywood and on television, died on April 10 in Los Angeles. He was 82.

The cause of death, in a hospital, was complications of pneumonia, said Stephanie Hogan, his niece.

Mr. Adiarte had a varied career, in which he played many characters, of various ethnicities, before he was cast in the first season of “M*A*S*H” as Ho-Jon, the Korean helper of the wisecracking doctors Hawkeye Pierce (Alan Alda) and Trapper John (Wayne Rogers).

As a child, Patrick portrayed one of the children of the king of Siam (now Thailand), who are tutored by a widowed schoolmistress in the original 1951 Broadway production of the Rodgers and Hammerstein musical “The King and I.” As a teenager, he played an assimilated Chinese American character in another of their shows, “Flower Drum Song” (1958).

Mr. Adiarte, center, with Mike Lookinland, left, and Christopher Knight in a 1972 episode of “The Brady Bunch.”Credit…ABC Photo Archives/Disney General Entertainment Content, via Getty Images

He also appeared in the movie versions of both shows, in 1956 and 1961.

In the 1960s and early ’70s, he was seen on several TV series. On “Bonanza,” he played a Native American named Swift Eagle; on “Ironside,” he was a Samoan boxer; on “CBS Playhouse,” he was a Viet Cong guerrilla. He played a Hawaiian tour guide in two episodes of “The Brady Bunch,” filmed in Hawaii.

In “High Time,” a 1960 film directed by Blake Edwards, he played an Indian exchange student who rooms with Bing Crosby, whose character returns to college in his 50s.