Himal

The Himal are savage, monster-like descendants of the djinn that couldn't cope with the aftermath of the Dust Curse and consequently lost their minds, succumbing to the elements that they were forced to mingle with. Over time the Himal started diverging more and more from their djinn brethren, losing the ability to speak and to convey their thoughts. Thus, despite having some semblence of social structure, they are regarded as uncivilized, dangerous monsters (which isn't far from truth) and are usually killed on sight.

Origins
When the Dust Curse was cast on the Tagani people, the whole of Western Thir embroiled in chaos. Initially almost all Djinn withered away, brought apart by the dust they were turned into. Only after mixing with various elements and thus gaining material form did they come back, rebuilding their society. Most managed to keep their sanity and adapted to their new lives, but some were too weak to combat the adversity. Many Djinn, especially Ifrits, simply could not be reintroduced to society as their minds had withered away alongside their bodies.

Separated from society because of their insanity and mental issues, the shunned and spurned Djinn formed a closer relationship with their respective elements, in turn giving up their humanity; the loss of sanity was followed by loss of coherent speech and then by loss of intelligence. Deformed both mentally and physically by their savage way of life, the outsiders became known as the "Himal" - barbarians.

Present day
Lauded as warnings against losing control of oneself, the Himal are feral beasts common in the more remote areas of both Western and Eastern Thir. Despite their simple social structures and them being aggressive only when in perceived danger, the Himal are dangerous and have killed many people that have dared to venture into their territory.

Despite their beastiality and ferocity, the Himal are oftentimes kept as slaves by the people of Western and West-Eastern Thir. Their lack of humanity prevents any feeling of guilt from slave-masters who view them as nothing more than animals. Usually people choose to enslave the Dao Himal because of their endurance and strength. They are also the easiest to catch, as they aren't as destructive as Ifrit, Marid or Rijad Himal.