From "Penny Dreadful: Evil Spirits in Heavenly Places (#2.4)"
[Vanessa and Mr. Chandler discuss the witch Hecate
Hecate wasn't a sea goddess. She was a moon goddess, and bringer of magic. And also a character in Macbeth, the Protector of Witches.
She didn't look like a witch.
And would an old crone have attracted your eye? No, Mr. Chandler, they can assume many guises, like a chameleon on a leaf. In their natural state, they're more... memorable.
She was some chameleon then.