To unlock the character classes below, fulfill the corresponding requirement.

Berserker: Level 40 Heavy Knight and level 40 Monster Tamer.
Cheerleader (Idol): Level 25 Geo Master and level 25 Healer.
Female Archer: Level 15 Female Fighter and level 15 Female Healer.
Female Ninja: Level 30 Female Monk and level 30 Female Magician.
Female Samurai: Level 35 Female Fighter and level 35 Female Archer.
Geo Master: Level 20 Fist Fighter and level 20 Healer.
Gunner Female: Level 15 Female Thief and level 15 Mage.
Gunner Male: Level 15 Thief and level 15 Male Mage.
Heavy Knight: Level 15 Male Fighter and level 15 Fist Fighter.
Magic Knight: Level 25 Fighter and level 25 Mage.
Majin: Complete the tutorial again on a cleared saved game file.
Male Archer: Level 15 Male Fighter and level 15 Male Healer.
Male Ninja: Level 30 Male Monk and level 30 Male Magician.
Male Samurai: Level 35 Male Fighter and level 35 Male Archer.
Masked Hero: Level 45 Thief and level 45 Gunner.
Monster Tamer: Level 15 Female Fighter and level 15 Fist Fighter.
Ninja Female: Level 30 Female Fist Fighter and level 30 Mage.
Ninja Male: Level 30 Male Fist Fighter and level 30 Mage.
Shaman: Level 25 Geo Master and level 25 Mage.
Star Mage Female: Level 50 female Mage.
Star Mage Male: Level 50 male Mage.