Charlotte Nightmare wears a banana yellow pullover sweater with a hood and black tights. The ends of the ears of the sweater hood are black, and the left one is tilted to the left. Everything underneath her hood is completely shrouded in pitch black darkness except for the two circular, starry blue eyes and mouth; she doesn’t have any pupils or visible teeth. Her feet are silver drills with three dark gray lines evenly spaced out across them; her hands weren’t drills, but they were made of the same metal-like material and had the same pattern as her feet. She also had a lightning bolt-shaped tail that looked like wood, but it was clearly part of her body. She’s also exactly six feet tall.
Without the hood on or the darkness covering her face, she has light gray skin and fluffy shoulder-length pure white hair. And she has blue eyes with black sclera. When her eyes have more effort/details her pupils have three red slits, and the "shine" in her eyes is always yellow.