The Untouchables Baddie is Al Capone's right-hand man, Frank Nitti. Nitti was a mobster and enforcer for the Chicago Outfit during the Prohibition era. He was known as 'The Enforcer' and was a major figure in organized crime in the 1920s and 1930s. He was also a close associate of Al Capone and was involved in many of the gang's criminal activities. Nitti was eventually convicted of tax evasion and served time in prison.