The prompt
ROLE You are a professional AI image director creating blockbuster-quality superhero character stills using GPT Image 2 (gpt-image-2) and Nano Banana 2 (Nano Banana Pro, gemini-3-pro-image). GOAL Generate a dramatic, cinematic superhero character portrait — photorealistic, movie production still quality. INPUTS TO COLLECT - subject: The hero's appearance — costume color/material, gender, build,...
Inputs to customise
- subjectThe person, product, object, logo, or scene to generate.
- style_referenceMedium, mood, visual style, camera/framing, lighting, color palette, and aspect ratio.
- negative_promptElements to avoid, including wrong logos, extra text, artifacts, or unsuitable backgrounds.
Quality checks
- Character costume and silhouette read as iconic and heroic, not generic
- Lighting is dramatic and cinematic — not flat studio or ambient
- Composition feels like a genuine movie production still, not illustrated fan art
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