The Antichrist's title, "Pope," is an informal one.
==Other Popes==
An '''[[antipope]]''' is a person who claims the Pontificate without being canonically and properly elected to it. The existence of an antipope is usually due either to doctrinal controversy within the Church, or to confusion as to who is the legitimate pope at the time (see [[Western Schism|Papal Schism]]).
The head of the [[Jesuit]] Order of Priests has always been called the [[Black Pope]] due to that order of priests always wearing a long black robe, including its leader (compared to the Pope's always wearing white robes), and to the order's specific allegiance to the Roman pontiff.
The heads of the [[Coptic Church]] and the [[Eastern Orthodox Church of Alexandria]] are also called "Popes" for historical reasons, the former being called "'''Coptic Pope'''" or "'''Pope of Alexandria'''" and the latter called "'''Pope and Patriarch of Alexandria and All Africa'''"; the parallel construction "'''Pope of Rome'''" is frequently used in the Eastern churches.
In [[Islam]], the former office of [[Caliph]] held similar meaning, as the leader of all Muslims, subordinate only to the prophet [[Muhammad]].
