She's a demon whose position is the highest as the Overseer of the Guardians of the Great Tomb of Nazarick, and a beautiful woman who possesses glossy and long jet black hair and gold pupils.
Because she's taking pride in her own position, she stands off against invaders with her confidence and dignity from a far off high position.
For example, no matter how wise and brave of an enemy she's recognizing a strong person, she will never acknowledge them as someone of the same rank.
It's because she knows that she was given such position.
The abilities she has are also something only adequate for the position of the Overseer of the Guardians and she's excelling remarkably in ingenuity and battle abilities.
However, it doesn't mean that there aren't points where she doesn't fall behind some other beings in each field.