Nazar

Nazar was a Janissary soldier, working for the Sultan in Constantinople.

Biography
In 1511, Nazar was one of the many Janissaries in Constantinople. However, the Assassin Ezio Auditore needed to obtain a Janissary uniform to gain entry into the Barracks, where he planned to interogate and kill the Janissary Captain, Tarik Barleti.

Ezio explored the city and came across Nazar, who was patrolling on his own, instead of patrolling with a group of other Janissaries. Ezio assassinated the man, took his uniform and then dumped his body.

However, the body was soon discovered, making it harder for the Assassin to enter the barracks unnoticed.

Source

 * Assassin's Creed: Revelations (novel)