Ming Woo (Maiden name Ming Wong, first marriage Ming Toy) is the older sister of Chang Wong. She was a former Global Community employee working at Buffer who is a believer. She was formerly married but left a widow during the early years of the Tribulation. She joined the Tribulation Force in "The Mark", escaping Buffer when the "mark of loyalty" was being tested out on prisoners. She traveled to China under the guise of a Global Community Peacekeeper officer named Chang Chow in order to find her parents who became believers, and discovered that while her mother was still alive, her father died a martyr. She later fell in love with and married Ree Woo in "Armageddon".