King of Kings is an imperial rank given to emperors: rulers who preside over several territories and peoples. Some monarchs use the title either to signal an ambition to build an empire or simply to set their status as that higher of other Kings.

King is a monarch. In the absence of King of Kings, a King would be the highest royal title of the land.

King Jeenor is a title frequently given to warlords. It is also sometimes used if the ruler has no descendants or if the ruler does not wish for their descendants to inherit the title, or if the system of government does not permit the title to be hereditary for one reason or another.