Ball-Jointed Dolls (BJDs) are customizable dolls made from resin or plastic, featuring articulated joints that allow for a wide range of poses. These dolls typically have a spherical joint structure, enabling movement at the neck, shoulders, elbows, hips, and knees. BJDs come in various sizes and styles, often representing different characters or themes. Collectors and enthusiasts enjoy dressing, painting, and modifying their dolls, making each one unique. The popularity of BJDs has led to a vibrant community where people share their creations and experiences online.