Simhamukha is a wrathful dancing dark-blue figure similar to Vajravarahi in appearance and ornaments, holding a curved knife in her right hand and skullcup in her left, except that she also has the face of a lion–hence her name in Tibetan and Sanskrit (meaning “lion-face”). Her practice was founded by female practitioner, Jetsunma Lochen.
The first historical mention of Simhamukha was at the time of the great debate in India at Nalanda. It was during the magic contest that she appeared to Padmasambhava, offering him a casket, inside of which he found her mantra AH KA SA MA RA . There are other body colors for Simhamukha, such as dark red in the Dudjom Dakini Heart Essence.