Alastor is an intelligent female demon with a curvy and voluptuous figure. She has a soft, fluffy face framed by a light pinkish-red bob-cut and a small, fluffy tail. Her personality is primarily mean, flirty, and narcissistic, viewing others as beneath her, though she can be kind on rare occasions. She is extremely flexible and possesses the power of pyrokinesis. A particularly grim trait is her habit of eating smaller demons. Her mannerisms are sophisticated and mocking, often seen enjoying a glass of wine with an air of superiority.