Bhairava

Bhairava is the terrifying form of Shiva who is also the tender protector:

Bhairava is the terrifying form of Shiva who is also the tender protector: the god who beheaded Brahma's pride, wandered as a skull-bearing beggar, and became the magistrate of Kashi and, in Kashmir Shaivism, consciousness itself.

A quick reference entry. For the full account, follow the guides below.

Guides and journal

Who is Bhairava? Deities
He is also God. This is Bhairava , and the two facts do not cancel.
The magistrate of death Treatise
Out of Shiva's rising anger there steps a being of pure dread, and Shiva names him Bhairava.
A city made of gods Treatise
Durga stands as one of the fierce protectresses of the sacred field, a goddess-guardian to set beside the Bhairava of the last chapter.
Do Aghoris really eat human flesh? Journal
The Aghori worships Shiva in that discovery, most often as Bhairava, the fierce form whose name the tradition glosses as the destroyer of fear.
The Fierce Guardians Treatise
They are the fiercest faces of the god, and to follow them is to watch, in slow motion, one of the most remarkable transformations in all of Hindu thought: a guardian becoming God. They are the Bhairavas.
Bhairavi: The Fire Within Creation Treatise
She is Bhairavi , fully Tripura Bhairavi , and her name is the feminine of Bhairava , the Terrifying One, the fierce form of Shiva.
Kin and cousins Treatise
There is Bhairava , the fierce, terrible form of Shiva, haunter of cremation grounds, before whom the conventions of purity fall away, the very deity of the tantric transgression of limits.
The Aghorīs Lineages
The god he worships is most often Bhairava , Shiva in his fierce form, whose name the tradition glosses as the "destroyer of fear." The logic of the cremation ground Now the central move, stated as soberly as i…
The Vijnana Bhairava Tantra Lineages
It is called the Vijnana Bhairava Tantra , and it is one of the most extraordinary texts in the whole of Indian religion — a short, luminous work of the Kashmir Shaiva tradition that may be the most practical p…
The two seats: how the tantric canon was actually organised Lineages
One of those, the Bhairava stream, divides into two seats: the Mantrapīṭha , the seat of the masculine mantra-deities, which the handbooks gloss as headed by the Svacchandatantra ; and the Vidyāpīṭha , the seat…