Ragnarok X: Next Generation, also known as ROX, has six unique classes, at the same time, each class can have two sub-classes.
Swordsman → Knight → Lord Knight
Thief → Assassin → Assassin Cross
Archer → Hunter → Sniper
Mage → Wizard → High Wizard
Acolyte → Priest → High Priest
Merchant → Blacksmith → Whitesmith
