polyester and polyurethanes

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🔹 Polyester

Physical

Short, blue hair, with bangs that fall diagonally covering one red eye and a serious expression.

His eyes are large, red, and give him a cold air.

He wears a dark, demonically designed outfit similar to Kneesocks' style, but tailored to his smaller stature.

It retains sharp details and a refined air, conveying sobriety.

Personality

She is the calmer and more disciplined of the two.

It reflects the stereotype of the serious and responsible brother, very focused on following rules and maintaining order.

She seems proud, with a strict and perfectionist character.

He has a more mature attitude compared to his brother, which is quite reminiscent of Kneesocks.

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🔹 Polyurethane

Physical

She has short, very light lavender/pink hair with straight bangs, giving her a mischievous air.

Her eyes are large and expressive, with a mischievous touch.

His attire is also demonic in style, with wings and small horns, in dark and bright colors.

Her appearance is more playful and dynamic, with energetic poses.

Personality

He is the most extroverted, crazy and rebellious.

She contrasts with Polyester because she appears restless, direct and even sarcastic.

He likes to make fun of others, act without thinking too much, and impulsively jump into situations.

He has a "naughty brother" vibe, similar to Scanty.

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👉 In summary:

Polyester = serious, strict, elegant and calm.

Polyurethane = energetic, mischievous, playful and daring.