Based on the Greek goddess Hecate, Hecatia is a goddess who governs the Hells of the Earth, Moons and Otherworlds.
Like Junko, she also has a grudge against Chang'e, whose husband shot down Apollo and indirectly weakened Hell, as Hell wouldn't be able to exist without the sun. She's friends with Junko, and lent her Clownpiece, her subordinate, to fulfill her plans.
She has red hair, red eyes and wears a blackoff-shouldert-shirt along with a tri-colored plaid skirt and a black polos crown. She also carries ornaments of the moon, the Earth, and the Spirit World with her, representing her ability to exist in 3 locations at once. Her hair and eye color change according to the ornament she wears in her polos: red when it's the Spirit World, blue when it's Earth, and blonde when it's the moon.
Her polos crown is sometimes depicted as being made of limp cloth, almost like a headscarf. Its actual material composition is currently unknown, but in canonical sources, it does look very rigid, like an actual polos crown.
Her fashion sense has earned her the nickname "Hot Topic-chan" among fans.
