A dharmapāla (Wylie: chos skyong) is a type of wrathful god in Buddhism. The name means "Dharma protector or defender" in Sanskrit, and the dharmapālas are also known as the Defenders of the Law (Dharma), or the Protectors of the Law.
In Vajrayana iconography and thangka depictions, dharmapālas are fearsome beings, often with many heads, many hands, or many feet. Dharmapālas often have blue, black or red skin, and a fierce expression with protruding fangs. Though dharmapālas have a terrifying appearance and countenance, they are all bodhisattvas or buddhas, meaning that they are embodiments of compassion that act in a wrathful way for the benefit of sentient beings.
In Tibet, principal Dharmapalas include:
In Tibet, most monasteries have a dedicated dharmapāla which was originally comparable to a genius loci. The many forms of Mahakala, for example, are emanations of Avalokiteshvara. Kalarupa, and Yamantaka are considered by practitioners to be emanations of the Buddha of Wisdom (Manjushri).
The main functions of a dharmapāla are said to be to avert the inner and outer obstacles that prevent spiritual practitioners from attaining spiritual realizations, as well as to foster the necessary conditions for their practice.
In Japanese Shingon Buddhism, a descendent of Tangmi, dharmapālas such as Acala and Yamantaka are classified as Wisdom Kings. Other dharmapālas, notably Mahakala, belong to tenbu (devas), the fourth hierarchy of deities.