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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.

Prompt

{
  "image_type": "comic_poster_illustration", 

  "reference_image": {
    "use": true,
    "identity_preservation": "strict",
    "face_similarity": "high",
    "no_face_morphing": true
  }, 

  "canvas": {
    "aspect_ratio": "16:9",
    "resolution": "4K",
    "orientation": "horizontal poster"
  }, 

  "title_text": {
    "text": "{argument name="title text" default="ZOOM!!!"}",
    "position": "top_center",
    "style": "bold comic title lettering",
    "font_look": "thick hand-drawn comic font",
    "color": "cream white with black outline",
    "effects": [
      "slight 3D emboss",
      "comic ink shadow",
      "subtle halftone texture"
    ]
  }, 

  "main_character": {
    "subject": "{argument name="main subject" default="spacecraft and pilot with metallic implant using my first reference image"}",
    "pose": "angry heroic",
    "style": "modern space miner hero"
    },
    "lighting": "dramatic comic-style rim lighting",
    "render_style": "healing Japanese Anime comic illustration"
  }, 

  "comic_panels": [
    {
      "position": "top_left",
      "pose": "Extreme close-up from behind spiderwebbed glass",
      "expression": "Angry",
      "panel_effect": "burst explosion background"
      "panel_effect": "comic sound effect craaack"
    },
    {
      "position": "top_right",
    "subject": "pilot with metallic implant using my first reference image",
      "pose": "mouth open eyes wide",
      "speech_text": "NOOO!",
      "expression": "Worried",
      "speech_text": "LUNA!",
    },
    {
      "position": "bottom_left",
    "subject": "spacecraft and astronaut using my second reference image",
      "pose": " profile of a small black ship facing frame left with a pointed nose sleek narrow fuselage swept down delta wings a single rear jet engine and a single tall rear tail fin and astronaut looking at it",
      "speech_text": "WHAAA?!",
      "motion_lines": true
    },
    {
    "position": "bottom_right",
    "subject": "spacecraft and pilot with metallic implant using my third reference image",
      "expression": "scared",
      "speech_text": "LAZARUS!",
      "panel_effect": "starburst"
    }
  ], 

  "background": {
    "style": "comic book panels collage",
    "colors": [
      "orange",
      "yellow",
      "blue",
      "teal"
    ],
    "elements": [
      "halftone dots",
      "ink splashes",
      "dynamic action lines",
      "comic explosion shapes"
    ],
    "bottom_scene": "asteroid field with gold veins in the asteroids"
  }, 

  "art_style": {
    "genre": "modern comic book / graphic novel",
    "influences": [
      "Marvel comic covers",
      "DC character posters",
      "Pop-art illustration"
    ],
    "line_work": "clean b"

Images

Prompt source
Updated
Feb 4, 2026
Source
X Post
Try upstream
License

CC BY 4.0. Prompt pages keep the original attribution and source links from the upstream gallery records stored in the database.

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