Capo di tutti capi

Capo di tutt'i capi or capo dei capi, often referred to as the Godfather in English, is Italian for "boss of all bosses" or "boss of [the] bosses". It is a phrase used mainly by the media, public and the law enforcement community to indicate a supremely powerful crime boss in the Sicilian or American Mafia who holds great influence over the whole organization.