Sapphire  

Aiko Sekiei, Prince, Princess, サファイア

The fictional character named Sapphire, who serves as the prince of Silverland, is actually female but pretends to be male in order to inherit the throne and prevent a villain from gaining power. Despite her tomboyish tendencies, she possesses refined qualities and excels at sword fighting under the persona of the Phantom Knight. Sapphire is compassionate, has strong moral values, and remains calm during stressful situations. Although most of her time is spent as Prince Sapphire, later in the series she adopts a blonde wig to portray herself as Princess Sapphire, allowing her to pursue romantic interests with Frank, her sister's persona.