Bhairavi is a fierce and terrifying aspect of the Devi virtually indistinguishable from Kali except for her particular identification as the consort of the Bhairava.
"You are the Mind, you are the Ether, you are the Air, you are also Fire and Water, and the Earth. You manifest yourself as the universe, there exists nothing other than you."
-Saundaryalahari, v. 35