There are three races in Ys Online and each one has to pick a primary class between Fighter or Mage. Once the primary class has leveled to 20, the player can then pick a secondary class that may be unique to their race.
Eresian - Can become Knights, Rogues, and Warriors as Fighers. The Mage counterpart can become Clerics or Wizards.
Afrocan - Can become Guardians, Nighthawks, Myrmidons as Fighers. The Mages can become Wiccas or Witchdoctors.
Kimoan - Can become Protectors or Archers as Fighers. The Mages can become Conjurors or Shamans.