Aksobhya holds up 'the mirror of wisdom to show us the truth of things, to let us see ourselves as we are, undistorted. Then he tapped the earth, to remind us that we shall find truth not in our ideas about things but in direct experience.' Vessantara 'A Guide to the Buddhas'
Mahakala known as Gonpo in Tibetan was originally a demon, who was tamed by Manjushree and Avalokiteswora and turned into a fierce protector of Buddhism, belonging to the Dharmapalas. This important spiritual protector deity is also known as "the lord of the wind", and "the great black one", a great guardian of the Dharma.