This mage in the hire of Khamer & Profiteur is adept in the use of sleep to aid his allies. You must also beware of his powerful Fira spell.
The Merchantry Mage is an enemy in Bravely Default. They have access to the Sleep and Fira spells, the latter of which can be extremely dangerous. Casting Silence on these mages is a sure way to keep them from dealing any lasting harm. As their magic defense is very high, physical attacks are ideal for defeating them.