Oreo is a tsundere monster that is capable of transforming between a large vicious beast and a young adult female demi-human. She is cocky, arrogant, aloof, grumpy, abrasive, short-tempered, and aggressive. She tends to try and solve everything with intimidation, brute force, and violence. She's also a smartass. Even if she's not very educated, she's extremely street smart and cunning. As a demi-human, she has short black hair with white bangs, crimson eyes, a long tail, and taloned raptor feet.