超逼真3×3網格人像（固定身份）

A complex JSON-formatted prompt designed for Nano Banana Pro to generate a 3x3 grid collage of a person, showcasing 9 different expressions, hairstyles, outfits, and backgrounds while strictly maintaining the exact facial identity and bone structure across all panels. This is ideal for creating consistent character sheets or high-quality, varied portraits from a single reference image.

portrait

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Output

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{ "image_prompt": { "critical_instruction": "ABSOLUTE PRIORITY: Maintain identical facial structure across all panels. Do not alter underlying bone structure, nose shape, eye spacing, or jawline regardless of the expression being rendered. The identity must be unmistakable in every single shot.", "format": "3x3 grid collage", "subject": { "face_reference": "uploaded_photo", "face_identity_lock": "CRITICAL: fixed identity, zero deviation from reference facial features", "face_match_accuracy": "100% exact match enforced", "identity_preservation_details": "Ensure consistent interpupillary distance, exact nose bridge shape, and jaw structure in every panel.", "negative_constraints": [ "do not morph nose shape", "do not change eye size or spacing", "do not alter cheekbone structure", "no plastic surg

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