Played By Fosco Gachetti.

Don Giuseppi Castelletti is the boss of La Cosa Nostra, known for being both a thoughtful and a ruthless man. An immigrant from Europe, he started out as a foot soldier in the Black Hand. By the time he had married and started his family, however, he was already working his way up the ranks in the crime family, until he was able to make a power play for leadership - a play which ended well. His power has not been threatened since then.

Castelletti is an NPC.