Semyon-Timur Alekseyevich Krokov was an Ukrainish mobster who was a New York City lawyer, being hired by the Marina Family in 1982. Krokov made Marinas allied to the street gang the Blacks, Triads, and O'Neil Gang, until their collapse in 1985 when the Triads assassin killed Don Cadena in prison, and Semyon's career as a lawyer ended.