He is a short Domani who is graying at the temples.
Mezar bonded Adrielle unwillingly, although they have now become fond of each other. He has Traveled to Tear to join up with Logain and Rand. He watches Rand's meeting with the Daughter of the Nine Moons from a distance and Travels in as backup when it is revealed that the Daughter of the Nine Moons is actually Semirhage.
Mezar suddenly turns up at the Black Tower and becomes one of Mazrim Taim's favorites. His eyes also change, looking different, and his smile is wrong according to Norley. Androl Genhald notes that his eyes are now dark caverns, where no light shines now, meaning he was Turned to the Shadow. Mezar arrives with Atal and the two seem friendly with each other. Coteren then arrives and informs that Androl has been demoted to Soldier. This just about causes a confrontation between the last of Logain's followers and Mazrim Taim's men. Mezar participates in trying to Turn Logain, and actually Turning Evin Vinchova to the Shadow.