Prompt Image

Gemini Image: Noir Comic Panel

A noir comic panel prompt for Gemini image generation: black-and-white inks, a rain-soaked detective, a neon bar reflection, and a top caption box.

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Prompt by Google Developers Blog — Prompting Gemini 2.5 Flash Image · Original source (opens in a new tab)

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Gemini Image: Noir Comic Panel — example image

The prompt

prompt 
A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a detective in a trench coat stands under a flickering streetlamp, rain soaking his shoulders. In the background, the neon sign of a desolate bar reflects in a puddle. A caption box at the top reads "The city was a tough place to keep secrets." The lighting is harsh, creating a dramatic, somber mood. Landscape.

What it is

This is a single-paragraph image-generation prompt that asks for one comic book panel in a gritty noir style with high-contrast black and white inks. It specifies a foreground subject (a detective in a trench coat under a flickering streetlamp in the rain), a background element (a desolate bar's neon sign reflected in a puddle), a caption box at the top with quoted text, harsh lighting, a somber mood, and landscape orientation. It is linked to Google's guide on prompting Gemini 2.5 Flash image generation.

Who it's for

  • Writers and storytellers who want a quick visual for a scene
  • Comic creators exploring noir panel compositions
  • Developers testing text-in-image rendering, such as caption boxes, with Gemini image generation
  • Anyone adapting a structured scene prompt (style, foreground, background, caption, lighting, orientation) to their own story

Requirements

Requirements

  • Access to a Gemini image generation model (the source links to a guide on Gemini 2.5 Flash image generation)
  • The prompt text, which can be used as-is or edited

Examples

Original detective panel

Prompt
prompt
A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a detective in a trench coat stands under a flickering streetlamp, rain soaking his shoulders. In the background, the neon sign of a desolate bar reflects in a puddle. A caption box at the top reads "The city was a tough place to keep secrets." The lighting is harsh, creating a dramatic, somber mood. Landscape.

Expected output: A landscape black-and-white noir panel with a rain-soaked detective under a streetlamp, a neon bar sign reflected in a puddle, and a top caption box with the quoted line.

Female private investigator at a train platform

Prompt
prompt
A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a private investigator in a long raincoat and wide-brimmed hat stands under a flickering streetlamp, rain soaking her shoulders. In the background, the lit sign of an empty train station reflects in a puddle. A caption box at the top reads "Every train out of town left with someone's secrets." The lighting is harsh, creating a dramatic, somber mood. Landscape.

Expected output: A noir panel with the same structure but a different protagonist and setting, with a station sign reflection and a new caption in the top box.

Informant in a back alley

Prompt
prompt
A single comic book panel in a gritty, noir art style with high-contrast black and white inks. In the foreground, a man in a battered overcoat stands under a flickering streetlamp, rain soaking his shoulders. In the background, the neon sign of a shuttered pawn shop reflects in a puddle. A caption box at the top reads "Nobody talks in this part of town unless they have to." The lighting is harsh, creating a dramatic, somber mood. Landscape.

Expected output: A moody landscape panel featuring an informant figure, a pawn shop neon reflection, and a caption box with the new line.

Pros & cons

Pros

  • Pro:Structured into style, foreground, background, caption, lighting, mood, and orientation, which makes it easy to adapt
  • Pro:Explicitly includes caption box text in quotes, useful for storytelling panels
  • Pro:Specifies orientation (Landscape), giving control over the format
  • Pro:Concrete visual details (flickering streetlamp, rain, neon reflection in a puddle) guide the composition

Cons

  • Con:Describes only a single panel, not a multi-panel page or sequence
  • Con:The source gives no guarantees about how accurately the caption text will render
  • Con:Tied to a noir black-and-white look; other styles require rewriting the prompt
  • Con:The source offers no guidance on model settings or iteration

Images

Gemini Image: Noir Comic Panel — example image
Gemini Image: Noir Comic Panel — example image · Google Developers Blog — Prompting Gemini 2.5 Flash Image
Gemini Image: Noir Comic Panel — example image

Tips

  • Keep the quoted caption short and put it in quotation marks, as in the original
  • Describe foreground and background separately to control composition
  • State the lighting and mood explicitly, as the original does with harsh lighting and a somber mood
  • End with the orientation, such as Landscape, to set the format

Variations

  • Replace the detective with another character while keeping the rain, streetlamp, and neon structure
  • Change the caption text to fit a different story beat
  • Swap the background element, such as a different neon sign, for a new setting
  • Change the art style or color treatment by rewriting the style sentence, while keeping the layout details