The origin of Bhairava can be traced to the conversation between Lord Brahma and Lord Vishnu recounted in "Shiv Maha-Purana" where Lord Vishnu asks Lord Brahma who is the supreme creator of the Universe. Arrogantly, Brahma tells Vishnu to worship him because he (Brahma) is the supreme creator. This angered Shiva who in reality is the creator of all. Shiva then incarnated in the form of Bhairava to punish Brahma. Bhairava beheaded one of Brahma's five heads and since then Brahma has only four heads. When depicted as Kala Bhairava, Bhairava is shown carrying the amputated head of Brahma. Cutting off Brahma's fifth head made him guilty of having slain Brahma, and as a result, he was forced to carry around the head for years until he had been absolved of the sin.
Bhairava is the fierce manifestation of Shiva . He is one of the most important deities of Nepal, sacred to Hindu and Buddhists alike. Bhairava himself has eight manifestations, Kala Bhairava, Asitanga Bhairava, Samhara Bhairava, Ruru Bhairava, Krodha Bhairava, Kapala Bhairava, Rudra Bhirava and Unmatta Bhairava.
Bhairava Mask brass 13 cm high