Create a cartoon-style 3D avatar of the angel Celestian for kids, with a calm, human look. Use Gray, Silver, and Gold to show balance, wisdom, and protection. He should have gentle features and peaceful aura that comforts children. Add symbols like scales and shield to show his role as guardian of harmony. Surround him with a soft silver glow to reflect his power to calm chaos and protect from harm. His presence should feel safe, kind, and steady, offering peace and guidance in a celestial way.