Chthonic

Chthonic describes deities and spirits of the "underworld," or Lower Planes of Existence, known for their intensity of malevolence. While traditionally chronicled as "evil" or "chaotic," a more precise delineation is to view the ideology and philosophy pervating the chthonic realm is one of dark, infernal hatred and ongoing resentment. The tradition of torturing the souls of the wicked in an eternal afterlife of torment is familiar to most; but the greater scheme is to wreak the same torment upon the virtuous as well. Since only a narrow boundary exists between the lower planes and Prime Material, or even with the upper planes, it requires constant vigilance by the righteous to maintain the status quo, lest the life world be harrowed as a field of wheat.