Earth monarch

The Earth King is the King of Ba Sing Se and the ruler of the Earth Kingdom. There were 52 Earth Kings until Ba Sig Se fell to the Fire Nation. The title is passed down to the eldest son. Traditionally, the Earth King leaves behind all personal possessions upon ascending the throne, including his given name, and is henceforth known only as "your majesty" or through his reign number. The Earth King's palace and seat of government reside in the Upper Ring of Ba Sing Se.

History
After unifying the Earth Kingdom through conquest, though early Earth Kings controlled their lands personally, often using brutal means to crush rebellion, over time the monarchy became stagnant and corrupt, as kings ceded more and more power to the byzantine system of government and bureaucracy which sprang up around them, choosing to spend more time surrounded by courtesans and wallowing in pleasure than taking interest in the affairs of state. Eventually the position declined to that of a figurehead, allowing Long Feng to take control of the country.

Known Earth Kings

 * Yi Ming
 * 46th Earth King
 * 51st Earth King
 * 52nd Earth King, Kuei
 * Ozai, as Ruler of Ba Sing Se