Citipati

Citipati (Sanskrit: चितिपति) is a protector deity or supernatural being in Tibetan Buddhism and Vajrayana

Buddhism of India. According to a Northern Buddhist legend, the Citipati were, in a former existence, two ascetics who were once lost in such deep meditation that they did not notice that a thief had cut off their heads and thrown them in the dust. Since that time they have been ferocious enemies of thieves, having vowed eternal vengeance. Their appearance is that of dancing skeletons.