Name: Semion Yudkovich Mogilevich (1946 - present)

Organization: Red Mafia of Russia, Solntsdevo Gang

Nicknames: Don Semyon, The Brainy Don

Profile: Weapons Trafficking, Contract Murder, Extortion, Drug Trafficking, Prostitution, Fraud, Money Laundering

Brief: Known as the "boss of bosses" of the Russian mafias and "the world's most powerful gangster", Mogilevich owned or controlled several companies and had international political ties allowing him to operate a large-scale crime network that extends globally.