Hecate

The Titans Perses and Asteria's daughter was the goddess of horror, darkness, witchcraft and crossroads. She demanded sacrifices of black lambs and dogs and was worshipped by witches and sorcerers.

She traveled accompanied by ghosts, evil spirits and barking dogs, and when people sacrificed to her they did it with their faces turned away. You could meet her at crossroads, and she was connected to the night and the moon, as well as the goddess Artemis.

To avoid her wrath people would put three faced statues of her outside their houses, and the statue would hold torches in its hands.

The infamous Medea was a priestess of Hecate.