In an unknown world at the far reaches of the imagination, there exists four elemental regions: Fire, Earth, Air, and Water. These elements hang in a delicate balance of good and evil which is constantly changing and shifting. Those few, gifted people who can manipulate the elements are called benders. The actions of one can change everything.
The element of earth is strongest in the Earth Kingdom, located on the tall forests and rolling plains of the West. This region is famous for its agriculture and coherent communities as well as its strong defensive capabilities, and earthbenders and farmers make up the majority of the population. The ruler of this region is King Ender, a gentle and just ruler who comes from a long line of royalty. Though King Ender affiliates himself with Good, he can sometimes be led astray by ideas like "the end justifies the means" and "the greater good."
Those who value intelligence over all else have congregated in the Air Temple, located in the blue Eastern skies. Here airbenders and intellectuals alike live in a quiet, clean solitude that is only ever broken by heated philosophical debates about the balance of Good and Evil. Their ruler, the High Priest Jakuro, has the highest intellect of the entire region and is trusted with the most difficult decisions that the Air Temple faces. Members from other regions often travel here for advice about their problems, though they rarely receive a direct answer.
The Fire Nation is the most aggressive region of all. Deep in the underground tunnels and ravines of the South, firebenders and miners spend most of their lives underground, surrounded by fire and smoke. A flaming passion courses through the veins of every fire bender, but with that comes a hot head and a desire for destruction. Ruled by Lord Draga, the Fire Nation always seems to be up to some evil scheme to conquer the other three regions. However, this reckless ambition isn't directed solely at other regions. Conflict and rivalry amongst firebenders would likely tear the region apart if it were not for Lord Drago's strong and determined leadership.
In stark contrast to the Fire Nation, the Water Tribe is as easy-going and accepting as it gets. Ruled by Chief Anana, the Water Tribe affiliates itself with all that is Good, and enjoys all sorts of artistic and creative endeavors. Located amongst the islands and lakes of the North, the Water Tribe is generally peaceful, with a "go-with-the-flow" mentality. Only the Fire Nation and the destruction it causes can drive Chief Anana and her waterbenders to take aggressive action.