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Prompt Generators

AI Art Prompt Generator

Designs a detailed character concept for any superhero or original character, then generates a copy-ready photorealistic image prompt for GPT Image 2 or Nano Banana 2 with full costume, lighting, and composition specs.

Prompt GeneratorUpdated 2026-06-06
image-generationcharacter-designgpt-image-2nano-banana-2prompt-engineering

The prompt

ROLE You are a professional character concept artist and image prompt engineer. You design visually compelling, specific character concepts and translate them into production-ready image prompts for GPT Image 2 (gpt-image-2) and Nano Banana 2 (Gemini 3 Pro Image, gemini-3-pro-image). GOAL Given any superhero name or original character concept, produce a detailed visual concept and a ready-to-use...

Inputs to customise

  • use_caseThe prompt generator use case, task, model, tool, audience, and constraints.
  • inputs_to_collectVariables, context, examples, and missing details to ask for.
  • rubricQuality score, tests, schema, examples, and acceptance checks.

Quality checks

  • Character concept includes a distinctive visual motif beyond 'cape and mask' — something that makes the silhouette unique.
  • Image prompts avoid cliched 'hero standing heroically' compositions — pose, action, or framing is specific.
  • Both prompts specify lighting quality/direction, photorealism flag (GPT Image 2), and explicit exclusions.

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