Circles and ovals are mostly used for friendly and outgoing faces. You can observe many characters with circular shapes in different parts of their body, clothes, and hair to show the same warm feeling.
Have you ever thought about the reason why square-faced people look more confident and inflexible? That’s because square-like shapes relate to straight vertical and horizontal lines that communicate strength, stability, and confidence. Squares can both be large and daunting or comforting and clumsy. They often depict steadfast characters who are dependable and are commonly used for superheroes.
And finally, the evil shape! Triangles are the most dynamic of the three shapes we have mentioned so far. Bad guys and villains are often based upon dominant triangular concepts, as they appear malicious and sinister, and communicate with the most aggression. It is the circle’s most opposing shape and is often used for antagonists.