Note: Information taken from Final Fantasy Wikia
Morphers mastering all Beastmen form. When morphed, they can use all of the skills and magic the monster has in battle. The effectiveness of the Morpher will depend on the stats of the monsters.
Antica (Paladin)
Bugbears (Monk)
Gigas (Beastmaster)
Goblins(White Mage)
Lamiae (Corsair)
Mamool Ja (Blue Mage)
Moblins (Thief)
Orcs (Warrior)
Poroggos (Black Mage)
Qiqirn (Ranger)
Quadav (Red Mage)
Sahagin (Bard)
Tonberries (Ninja)
Trolls (Puppetmaster)
Yagudo (Samurai)
Pixies (Dancer)
Demons (Dark Knight)
Skeletons (Dragoon)
Vampyr(Summoner)