Cleo de Nile is a mummy in the possession of long black hair with brown and gold highlights. Her skin is mocha colored, smooth and flawless. She has turquoise eyes (sometimes green). Many parts about her points to her regal heritage, such as her ever-present burial wrappings, which she has to wear lest she disappear into dust, and a crystal birthmark under her right eye.

Cleo's royalty, and expects everyone to treat her like it. Usually, her attitude is selfish, spoiled, arrogant, and unkind.