4. Nicky Barnes
Fortune: $105 Million
Nicky Barnes started using heroin at a young age to escape his alcoholic and abusive father. After battling through addiction, he later figured out that he’ll make a fortune selling drugs than buying them. For a long time, Barnes managed to avoid law enforcement by putting them on his payroll. Having established himself as ‘Mr. Untouchable’, Barnes infuriated the police who forced/ordered the DEA to arrest and bring Barnes to face justice. In 1977 he received a life imprisonment, but Barnes got out in 1998 after being an informant to help the government indict more drug dealers.