Goddess Kali
"काल" has three meanings viz. time, death and black.
Goddess has a severed head in one of her hand.

She can be perceived only after one's ego has been slain.

She wears the garland of skulls.

All languages originated from her.

She is always with Shiva.

Energy complements consciousness.

Her hair is not done.

Obligations are not for nature.

She is naked.

Nothing can cover the universe as she herself is the entirety.