Sometimes called Mr. Untouchable, Leroy 'Nicky' Barnes became one of the biggest drug dealers in New York City during the 1970s.
Infamous drug trafficker Griselda Blanco is suspected of committing more than 200 murders while transporting cocaine from Colombia to the U.S. She was murdered in Colombia in 2012.
Rayful Edmond III was a notorious drug dealer in the 1980s in Washington, D.C., who made millions supplying the city with crack cocaine.
Colombian drug lord Pablo Escobar's ambition and ruthlessness made him one of the wealthiest, most powerful, and most violent criminals of all-time.
Jeff Fort is an American criminal best known as the founder and leader of the Black P. Stone Nation gang. Other crimes have included misuse of federal funds, drug trafficking and attempted terrorism.
Sammy "The Bull" Gravano, a mobster turned government witness, is best known for testifying against his mafia associates in exchange for government protection.
Larry Hoover, also known as "King Larry," is the notorious former leader of the Gangster Disciple Nation, a Chicago street gang that spread nationwide.
Cornell Jones is was a drug kingpin in the Washington, D.C. area during the 1970s and 1980s.
By the 1960s, gangster and drug kingpin Frank Lucas had constructed an international drug ring that spanned from New York to South East Asia.
Kenneth McGriff was the leader of the Supreme Team gang, a main player in the Baisley Park crack-cocaine scene. In 2007, he was sentenced to life in prison.
Lorenzo Nichols was one of the top drug lords in New York City in the 1980s. He is currently serving time in a New York State corrections facility.