Circular shapes are considered the friendliest as they have no sharp edges and are associated with soft, harmless things in nature. Many protagonists are designed with circular elements. Square shapes communicate strength, stability, and confidence, and can depict dependable but clumsy characters like superheroes. Triangular shapes are the most dynamic and are often used for antagonists as they appear malicious and aggressive. When designing characters, their proportions and shapes should contrast to create visual interest and reveal personality traits.