Gyalpo spirits are one of the eight classes of haughty gods and spirit 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 (Wylie: chos skyong, bon skyong). Geoffrey Samuel describes these gyalpo spirits as "king-spirits" who are "the spirits of evil kings or of high lamas who have failed their vows." He also states that they are white in color. De Nebesky- Wojkowitz characterizes this type of spirit as generally red in colour and of violent character, harassing mainly lamas and religious people, but also laity and even animals. In fact, gyalpo spirits often have both white (peaceful) and red (wrathful) forms. It is believed one can be protected against gyalpo spirits by means of appropriate rituals.[4] In religious meditation instructions texts attributed to Padmasambhava, he warns his disciples against magical displays of this class of spirits. Some gyalpos are believed to be bound by oath by Padmasambhava, for example Gyalpo Pehar is believed to be the main guardian of Samye, built at the time of Padmasambhava and King Trisong Detsen. Machig Labdron enumerated outer, inner and secret ways gyalpo spirits manifest. The outer way are very elegant temples with beautiful ornaments, crystal stupas and many offerings, rich with silver and gold, with well dressed monks giving teachings, full of charisma; their characteristic provocation is nervousness and confusion. Tulku Urgyen Rinpoche (1920�1996) wrote that as very often gyalpos manifest as masters, spiritual teachers and enlightened beings, several highly realised practitioners of the past fell for their tricks