Marina Tsvigun (Ukrainian: Марина Цвігун), or Maria Devi Christos by assumed name, (born 1960) is a religious sect leader of the New Community of Enlightened Humanity, also known as YUSMALOS[a] or "The Great White Brotherhood".
She served as a functionary for the Young Communist League district committee, worked as a newspaper journalist and an editor for Donetsk textile factory radio network.
According to the report of the Orthodox Church, Kyiv City Court found Tsvigun and Krivonogov guilty of violating citizens' health under the guise of religious ceremonies and seizing by force.
After serving the term, Tsvigun changed her name and surname to Victoria Victorovna Preobrazhenskaya and married John-Peter II, a brotherhood member (real name Peter Kovalchuk).
She published doctrine pamphlets "The Science about Light and Its Transformation" (available in Russian) and "The Last Testament of the Mother of the World", both written by her in prison.