The Kingdom of Skyy
Long eons in the Shadowfell have shaped the shadar-kai into a fiery and, some say, cruel people. Fighting the apathy pervasive in their home plane, shadar-kai live passionately and fearlessly, if grimly. They see themselves as instruments of death and dissolution, the bringers of the righteous end to complacency, stagnation, and life itself. Theirs is a harsh society of self-interest. Among shadar-kai, the strong of body and mind excel and create legends. The weak molder to dust, passing into eternity unremembered. The shadar-kai are not an inherently evil people, but they can be callous and cold. They largely believe in the doctrine of the Queen of Death.
Source: Dragon Magazine #372