Dmitri Polyakov, Ukrainian general and spy (b. 1926)

Dmitri Fyodorovich Polyakov (Russian: Дмитрий Фёдорович Поляков) (6 July 1921 – 15 March 1988) was a Soviet Major General, a ranking GRU officer, and a prominent Cold War spy who revealed Soviet secrets to the FBI and the Central Intelligence Agency. In the CIA, he was known by code names BOURBON and ROAM, while the Federal Bureau of Investigation (FBI) knew him as TOPHAT (Top Hat).