Wrathful deities can be divided into several categories: * The Herukas (Tb. tRak-thung, lit. "blood drinker"), which are enlightened beings who adopt fierce forms to express their detachment from the world of ignorance. * The Wisdom Kings (Sanskrit vidyarāja), known particularly as the protectors of the Five Wisdom Buddhas; more a feature of Japanese than Tibetan Buddhism * The Protectors (Sanskrit pāla), usually subdivided into three categories: * Lokapālas or "Protectors of the World" are guardians of the four cardinal directions * Kṣetrapālas or "Protectors of the Region" * Dharmapālas or "Protectors of the Law" which vary in the level of realization attributed to them. This can be anything from fully enlightened to an oath-bound worldly spirit. Most of the major D