Born in Sardinia and a native Italian, Fisho Krilllione was forced to emigrate to America because Sicilian Mafia boss Don Salmone had a vendetta against his family after the murder of Fisho's father and the failed attempt at revenge by his older brother Pesce. Later, Fisho Krilllione led one of the most powerful clans of the Marine Mafia Clan, the Krilllione family.