The term 'Mafia Family Leader' is often used to refer to the head of a Mafia family. This person is also known as the DON, which is a three-letter word. The DON is responsible for overseeing all activities of the family, including criminal activities such as extortion and racketeering. They are also responsible for maintaining order within the family and ensuring that all members follow the rules. The DON is usually the most powerful and influential member of the family and is respected by all other members.