Vito Genovese
Along with Italian American associates Vito Genovese and Tommy "Three-Finger Brown" Lucchese, and Jewish associates Meyer Lansky and Benjamin "Bugsy" Siegel, the gang became involved in robbery, theft, extortion, gambling and narcotics. The Luciano-Costello-Lansky-Siegel alliance prospered even further with the passage of Prohibition in 1920. The gang went into bootlegging, backed by criminal financier Arnold "the Brain" Rothstein.