The wrathful (krodha) emanation of Manjushri. He is a main yidam (ishta deva) of the Gelukpas. As a  dharma protector he keeps away all that hinders a practioner on the path. He conquers Maheshvara and Uma, who are trempled under his feet. He can be depicted alone or with his consort (yum) Vajravetali. He can be depicted with two, six, eighteen, or with twenty arms, of which with six is the most common form.
The six-armed has a wrathful buffalo head, with on top a smiling face of Manjushri.