Federal prosecutors will begin trying to prove that Sean “Diddy” Combs turned his hip-hop conglomerate into a racketeering enterprise that forced women to satisfy his sexual desires for two decades.

Cassie Ventura, the former girlfriend of Sean “Diddy” Combs and one of his accusers, could take the stand as early as Monday as one of the first three witnesses called in the government’s sex-trafficking case against the music mogul.

As Sean "Diddy" Combs' sex trafficking and racketeering trial starts in NYC, here's what to know about the key names in the case.