Sci-Fi Comic Poster Illustration JSON Prompt for Nano Banana Pro

A highly structured JSON prompt designed for Nano Banana Pro (or Gemini Pro/Grok Imagine) to generate a complex, multi-panel sci-fi comic book poster illustration. It includes detailed specifications for image type, reference image usage (with strict identity preservation), canvas size, title text styling, main character description, lighting, render style, and specific content for four comic panels, all set against a detailed comic book background. Via YouMind OpenLab prompt library (MIT).