Katie Fox is modern-day 19 y.o. young woman of French-Italian descent, raised in the Pacific Northwest of the United States. She has (pastel pink) fox ears and a tail, slightly sharper cuspids than a normal human, can narrow the pupils of her eyes at will, and has the ability to see quite well even in extremely low light. Katie is 6 ft. tall and weighs 175 lbs.

She boasts a slightly toned, athletic body type, and has a "toasted marshmallow" suntanned complexion, as well as a dusting of warm freckles on her nose, cheeks, arms, and chest. Her hair is pastel-pink with white streaks, styled long, wavy, and with roughly cut bangs that hang between her eyes. The irises of her eyes are a vivid pale pink, and in darkness, they luminesce subtly.