Blue Mage

A Blue Mage is a job class in the Final Fantasy series. They initially appeared in Final Fantasy V, though other games include Final Fantasy Tactics Advance and its sequel Final Fantasy Tactics A2: Grimoire of the Rift for the Game Boy Advance and Nintendo DS, respectively.

Blue Mages are capable of using enemy attacks, though to learn them they'll first have to be attacked by the enemy and be kept alive. This type of magic is known as Blue Magic, hence the name of the mage.