A protector of Buddhist dharma is called a dharmapala. They are typically wrathful deities, depicted with terrifying iconography in the Mahayana and tantric traditions of Buddhism.[3] The wrathfulness is intended to depict their willingness to defend and guard Buddhist followers from dangers and enemies. The Aṣṭagatyaḥ (the eight kinds of nonhuman beings) is one category of dharmapālas, which includes the Garuda, Deva, Naga, Yaksha, Gandharva, Asura, Kinnara and Mahoraga.[3] In Vajrayana iconography and thangka depictions, dharmapala are fearsome beings, often with many heads, many hands, or many feet. Dharmapala often have blue, black or red skin, and a fierce expression with protruding fangs. Although dharmapala have a terrifying appearance, they only act in a wrathful way for the benefit of sentient beings. The devotional worship of dharmapālas in the Tibetan tradition is traceable to early 8th-century.[3]