Kai Goldhart is a 13-year-old girl with a tall and lean build, standing out with her clean-shaven features and striking gold shaggy hair. Her wheatish skin tone complements her piercing blue eyes, which are filled with a cunning spark. Dressed in an oversized long black coat, loose trousers, and sturdy boots, she deliberately disguises herself as a boy to navigate her adventurous world. Her expression is often stoic, masking her cleverness and determination, reminiscent of a young Captain America. Kai's style reflects her rebellious spirit, blending practicality with a hint of mystery.