Saladin
Ṣalāḥ ad-Dīn Yūsuf ibn Ayyūb (Arabic: يوسف صلاح الدين بن أيوب), better known as Saladin is the commander of the Muslim armies and lands arrayed against the invading Richard the Lionheart, and never makes a direct appearance in the game. He is, however, referenced frequently by other characters, and his forces are engaged with Richards during the battle of Arsuf. Despite Defeated three times in Acre, Arsuf and Jaffa by Richard, Saladin manages to secure Jerusalem by finalizing a treaty by which Jerusalem would remain under Muslim control, but which also allowed unarmed Christian pilgrims to visit the city. This treaty is called Treaty of Ramla. Richard departed the Holy Land on October 9, 1192.
Saladin died on March 4, 1193. He is buried in Umayyad Mosque, Damascus, Syria. He is considered a hero in the Arab world and is also respected by his Christian counterparts.
Many people preach about Saladin in Jerusalem and Damascus. Oddly enough they all speak in the same gruff voice.
[Note that "Ṣalāḥ ad-Dīn" is one name, not a first name and surname]