American Gangster fans should get to revisit the fascinating criminal underworld of 1960s Harlem. In yet another case of first comes a film, then comes its prequel series, Narcos co-creator Chris Brancato is reportedly revisiting at least one character from the acclaimed biopic American Gangster. Whitaker is set to play Ellsworth ?Bumpy? Johnson, the mob boss whose death in American Gangster cleared the way for Frank Lucas, played by Denzel Washington, to take over the Harlem criminal underworld.