text: John Dillinger, a bank robber who became Hoover's obsession in the was the leader of gang including “Machine Gun” Kelly, “Baby Face” Nelson and “Pretty Boy” Floyd. One of my subs at school is a great nephew of this man. Pretty Boy Floyd, Real Gangster, Mafia Gangster, Baby Face Nelson, Bank Robber, Bonnie N Clyde, G Man, People Of Interest, The Life