

He played the starring role in the 1993 Mandarin language TV show The Big Eunuch and the Little Carpenter which ran for forty episodes.
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He also starred in the movie Breathing Fire (1991) and had a small role in Encino Man (1992).
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He played Sam on the short-lived TV series Together We Stand (1986–1987) and played Jasper Kwong in the sitcom Head of the Class from 1990 to 1991. In 1987, he appeared in the Japanese movie Passengers ( Passenjā Sugisarishi Hibi) with the Japanese idol singer Honda Minako. He played a pickpocket orphan in the 1986 Taiwanese movie It Takes a Thief. In 1985, Quan co-starred in The Goonies as a member of the eponymous group of children, the inventor Richard "Data" Wang. The casting director auditioned children at his elementary school, which also included his brother. Quan became a child actor at age 12, starring as Harrison Ford's sidekick Short Round in Indiana Jones and the Temple of Doom. He later attended the University of Manchester in the United Kingdom. After high school, he graduated from the University of Southern California School of Cinematic Arts. High in Tujunga, California, and Alhambra High School in Alhambra, California. His family was selected for political asylum and emigrated to the United States as refugees in 1979.

His family fled Vietnam in 1978 where he, his father and 5 siblings arrived in a refugee camp in Hong Kong, separating from his mother and 3 other siblings who fled to Malaysia. He was forced to leave his country when the Army of the Republic of Vietnam was defeated during the Fall of Saigon. Quan was born on August 20, 1971, in Saigon, South Vietnam (present-day Ho Chi Minh City, Vietnam) to Vietnamese parents of Chinese descent.
