In TearRing Saga, Dukes are a non-playable infantry class, Dukes appear as nobles who can wield Swords in combat and have relatively low levels and stats when encountered in game.
In Berwick Saga, Dukes are an armored class, similar to General. Duke possess high stats and are used by ally NPCs in one chapter of the game. They can use Swords and equip Large Shields. There is also a weaker variant of the class known as Earl that is used by an enemy character appearing in the same chapter.
- Codha - The chancellor of Wellt.
- Pavlov - An imperial commander in charge of Sene.
- Kernel - An imperial commander in charge of Selba.
- Ahab - A prince of Salia who launched a coup against his brother, King Dagnell.
- Dolmu - A noble of Reeve who betrayed his country to the Zoa Empire.