The spirits are an enigma, beings that exist in ways that mortals have little understanding of. Most appear to be indifferent to the lives of mortals with a handful that interfere in benevolent and malevolent ways. When it comes to spirits, there isn't a dividing line that separate good and evil. If anything, the spirits are a chaotic entity that does what many believe to be necessary in their own agendas. Rural villagers are the last that pay tribute to the spirits, understanding that they are like nature in many ways. An example of duality.
The spirits when they are recognized by mortals have come in many guises. Personifying the elements, flora and fauna but never duplicating the appearance. When seen, there is always something about them that spells out an otherworldly origin. Because they exist in more than one realm, the spirits can either be corporeal or not. Able to pass through walls or spark the fires that lead to raging infernos.
Okay that's done. Any questions?