The wrathful Mahakala
The guardian deity Mahakala assisted the Shabdrung Ngawang Namgyel all his life, and in all conflicts he was involved in, whether it was battling the pre-Buddhist local deities, or against various hostile local rulers.
The wrathful apparition is an emanation of Buddha Akshobhya. Mahakala is one of the most important guardian deities of both the Drukpa Kagyupa school of Buddhism and the Bhutanese state. In his raven-headed form, as Legön Jaro Dongchen, he was the personal guardian deity of the Shabdrung Ngawang Namgyel and nowadays of the royal Wangchuck dynasty. The raven-head adorns the crown of the Bhutanese monarchy.
In Bhutan Mahakala is seen as a protective deity without the territorial limitations of the local mountain gods. Frequently he is described as the overlord of all the mountain gods. The relation of Mahakala to the other mountain gods is comparable to that of the central power towards the local leadership structures before the unification of the country.