Dr. Haing Somnang Ngor (Chinese: 吳漢潤; pinyin: Wú Hànrùn, March 22, 1940 – February 25, 1996) was a Cambodian American physician, actor and author who is best known for winning the 1985 Academy Award for Best Supporting Actor for his debut performance in the movie The Killing Fields, in which he portrayed Cambodian journalist and refugee Dith Pran. He was also the first ever Asian actor to win an Oscar for a supporting performance and debut performance. His mother was Khmer and his father was of Chinese descent. Ngor and Harold Russell are the only two non-professional actors to win an Academy Award in an acting category.

Born in Samrong Young, Cambodia, Ngor trained as a surgeon and gynecologist. He was practicing in the capital, Phnom Penh, in 1975 when Pol Pot's Khmer Rouge seized control of the country and proclaimed it Democratic Kampuchea. He was compelled to conceal his education, medical skills, and even the fact that he wore glasses to avoid the new regime's intense hostility to intellectuals and professionals. He was expelled from Phnom Penh along with the bulk of its two million inhabitants as part of the Khmer Rouge's "Year Zero" social experiment and imprisoned in a concentration camp along with his wife, My-Huoy, who subsequently died giving birth. Although a gynecologist, he was unable to treat his wife who required a Cesarean section as he would have been exposed and both he and his wife (as well as the child) would very probably have been killed. After the fall of the Khmer Rouge in 1979, Ngor worked as a doctor in a refugee camp in Thailand and left with his niece for the United States on August 30, 1980. Ngor was not able to resume medical practice in the U.S. He never remarried.

Samuel Atkinson "Sam" Waterston (born November 15, 1940) is an American actor and occasional producer and director. Among other roles, he is noted for his Academy Award-nominated portrayal of Sydney Schanberg in 1984's The Killing Fields, and his Golden Globe- and Screen Actors Guild Award-winning portrayal of Jack McCoy on the NBC television series Law & Order. He has been nominated for multiple Golden Globe-, Screen Actors Guild-, BAFTA- and Emmy Awards, having starred in over eighty film and television productions during his forty-five year career.Allmovie has characterised Waterston as having "cultivated a loyal following with his quietly charismatic, unfailingly solid performances." In January 2010, he received a star on the Hollywood Walk of Fame.

Waterston, the third of four siblings, (Roberta, George and Ellen) was born in Cambridge, Massachusetts. His mother, Alice Tucker (née Atkinson), was an American Mayflower descendant and worked as a landscape painter, and his father, George Chychele Waterston, was an immigrant from Leith, Scotland and a semanticist and language teacher. Waterston attended both the Brooks School, a boarding school in North Andover, Massachusetts where his father taught, and the Groton School in Groton, Massachusetts. He entered Yale University on a scholarship in 1958 and graduated with a BA in 1962. After graduating from Yale, he attended the Clinton Playhouse for several months. Waterston also attended the Sorbonne in Paris and the American Actors Workshop.

John Gavin Malkovich (born December 9, 1953) is an American actor, producer, director and fashion designer with his label Technobohemian. Over the last 25 years of his career, Malkovich has appeared in more than 70 motion pictures. For his roles in Places in the Heart and In the Line of Fire, he received Academy Award nominations. He has also appeared in critically acclaimed films such as Empire of the Sun, The Killing Fields, Dangerous Liaisons, Of Mice and Men, Con Air, Being John Malkovich, and Red. He will produce the film version of the book The Perks of Being a Wallflower.

Malkovich was born in Christopher, Illinois. His paternal grandparents were Croats, natives of Ozalj in Croatia. His mother was of Scottish and German ancestry. He grew up in Benton, Illinois, in a large house on South Main Street. His father, Daniel Leon Malkovich, was a state conservation director and publisher of Outdoor Illinois, a conservation magazine. His mother, Joe Anne (née Choisser), owned the Benton Evening News (a local newspaper in Benton, Il.), as well as Outdoor Illinois. Malkovich attended Logan Grade School,^{[citation needed]} Webster Junior High, and Benton Consolidated High School, in Benton, Illinois. During his high school years, he appeared in various plays and the musical, Carousel. He was also a member of a folk/rock musical trio, and was a member of a local summer theater/comedy project in Benton in 1972, where he co-starred in Jean-Claude van Itallie's America Hurrah. Upon graduation from high school, he entered Eastern Illinois University, and then transferred to Illinois State University, where he majored in theatre.

Dith Pran (September 27, 1942 – March 30, 2008) was a Cambodian photojournalist best known as a refugee and survivor of the Cambodian Genocide. He was the subject of the Academy Award-winning film The Killing Fields (1984). He was portrayed in the movie by first-time actor Haing S. Ngor (1940–1996), who won an Academy Award for Best Supporting Actor for his performance.

Pran was born in Siem Reap, Cambodia near Angkor Wat. His father worked as a public works official. He learned French at school and taught himself English.

The US Army hired him as a translator but after his ties with the United States were severed, Pran worked with a British film crew and then as a hotel receptionist.

In 1975, Pran and New York Times reporter Sydney Schanberg stayed behind in Cambodia to cover the fall of the capital Phnom Penh to the Communist Khmer Rouge. Schanberg and other foreign reporters were allowed to leave the country, but Pran was not. Due to persecution of intellectuals during the genocide, he hid the fact that he was educated or that he knew Americans and pretended to be a taxi driver. When Cambodians were forced to work in labor camps, Pran had to endure four years of starvation and torture before Vietnam overthrew the Khmer Rouge in December 1978. He coined the phrase "killing fields" to refer to the clusters of corpses and skeletal remains of victims he encountered during his 40-mile escape. His three brothers and one sister were killed in Cambodia.

William Oliver Stone (born September 15, 1946) is an American film director, producer and screenwriter. Stone became well known in the late 1980s and the early 1990s for directing a series of films about the Vietnam War, in which he had previously participated as an infantry soldier. He won further attention - and controversy - with films JFK (1991) and Natural Born Killers (1994). Stone's movies frequently focus on contemporary political and cultural issues. He has received three Academy Awards: Best Adapted Screenplay for Midnight Express (1978), and Best Director for Platoon (1986) and Born on the Fourth of July (1989). British newspaper The Guardian described Stone as "one of the few committed men of the left working in mainstream American cinema." Stone's films often combine different cameras and film formats within a single scene (including VHS and 8 mm film) as evidenced in JFK and Natural Born Killers.