This is the wrathful form of Avalokiteshvara , the Bodhisattva of Compassion. He protects from dangers and bad influences that might hinder a monk's approach to enlightenment. Mahakala is seen as the protector of the Dalai Lamas .
MAHAKALA
Meaning of MAHAKALA in English
Buddhism English glossary. Английский глоссарий буддизма. 2012