Michael Sabo, best known as a check, stocks and bonds forger. He became notorious in the 1960s throughout the 1990s as a "Great Impostor" with over 100 aliases, and earned millions from such. Alfredo Sáenz Abad who lied about bank loans, as a banker so that some customers to the bank went to prison. Later on he was sentenced to prison, but managed to get a pardon and kept his job.
John Spano, a struggling businessman who faked massive success in an attempt to buy out the New York Islanders of the NHL. Allen Stanford Self-styled banker who sold fake certificates of deposit to people in many countries, raking in $7 billion to $8 billion over decades.