Mentor

The title of Mentor was given to leaders in the Assassin Order who had obtained an extraordinary amount of skill and wisdom Thesand had trained several Assassin apprentices.

These Assassin leaders were Master Assassins assigned to lead the branches of Assassins spread around the globe, after the Grand Master of the Assassin Order Altaïr Ibn-La'Ahad had disbanded the Assassins from Masyaf. Nonetheless, Altaïr himself and his predecessor Al Mualim were frequently referred to as Mentor.

By the 20th century, the titles of Grand Master and Mentor had merged into one, with both terms referring to the sole leader of the Assassin Order.