Blue Mages, as their name implies, focus on Blue Magic, a special subset of Magic that allows them to use attacks otherwise exclusive to enemies. While an odd choice, Blue Mages often have a wide range of usefulness due to the varied spells they gain. Blue Mages usually learn Blue Magic by having enemies (or occasionally, another Blue Mage ally) use it on them, but some games have other methods to learn their magic. Blue Mages benefit greatly from the ability to Control monsters, reducing the chance involved in waiting for a monster to use their skill on the Blue Mage.
Beyond this, Blue Mages vary in equipment and physical prowess. They are not as weak as other Mage classes in terms of attack or defense, and are usually capable fighters. Of course, their true strength is their magic. As with most of the other mage classes, Blue Mages usually wear clothes and cloaks which match their magic color (blue, in this case), sometimes with a mask.
The Blue Mage job class is obtained after the Wind Crystal shatters. Blue Magic is learned by everyone after any Blue Mage in the party is struck by a qualifying enemy ability; the Blue Mage does not need to survive the attack to consider it learned.
Strago Magus is a Blue Mage who learns Blue Magic via his Lore skill, and learns Lores by seeing enemies use an attack he can learn. Gau has a skill called Rage, which allows him to take on the attributes of enemies and use their attacks similar to a Blue Mage, in fact, some Blue Magic can be learned via Gau's Rages.
Blue Mage is an advanced job class. Within the story, using Blue Magic means they use powers not meant for mortals, endangering their souls.
It allows the wearer to wield the peculiar magics of nature itself, and hastens the recovery of ATB.
Blue Mages can learn certain spells by being hit with them while the Learning ability is equipped.
Blue Mages make another appearance, serving the same playing style as in its predecessor.
Class Twelfth Moogle from the Cranberry Knights represents the Blue Mage class.
In the Duel Colosseum, when selected, the Blue Mage job card increases the appearance rate of job cards.
The Blue Mage job card reappears in the new Labyrinth mode, and once again increases the appearance rate of job cards while in effect.
Casting Bad Breath causes prolonged nausea, but such is the blue mage's dedication.
The Blue Mage is a character available to the party, he uses the Missile ability during battle. Unlocks at level 14.
Currently the Blue Mage is not a playable character. However, the job's sprites can be found in the game's data.
The Blue Mage job appears with five Water-elemental cards.
The Gun Mage (魔銃士, Majūshi?, lit. Magic Gunner) is a dressphere and is the game's equivalent of a Blue Mage. Their Blue Bullet command lets them use enemies' skills once they have been used upon the Gun Mage character in battle.
The Vampire (ヴァンパイア, Vanpaia?) is an optional asterisk that serves as the Blue Mage equivalent. It is obtained after defeating Lester DeRosso in the Vampire Castle. Like the Blue Mage, Vampire's can use a set of abilities known as "genome abilities", that allow them to use enemy skills after getting hit by them.
- In Final Fantasy IV: The After Years there is some evidence in the source code of the game that suggests Harley was originally intended to be a Blue Mage.