About Gyalpo spirits

Gyalpo spirits are one of the eight classes of haughty gods and spirits in Tibetan mythology and religion. Gyalpo, a word which simply means "king" in the Tibetic languages, in Tibetan mythology is used to refer to the Four Heavenly Kings and especially to a class of spirits, both Buddhist and Bon, who may be either malevolent spirits or oath-bound as dharmapalas.