creating-characters

A workflow for creating prompts for original character designs with Nano Banana Pro, an image-generation tool. It gathers the character's appearance, personality, intended use, and visual style.

In plain words
What is it for?
Use it to design characters for icons, illustrations, manga, games, mascots, or merchandise, including style and pose variations.
Why use it?
It turns a loose character idea into a detailed prompt and keeps related prompts, images, and progress notes organized.

Skill for Claude CodeCodex

Part of the gen-ai-image-prompt-creator plugin — 7 skills, 7 commands shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/masayan1126/masayan-uni-code-plugins/character
Any agent
npx skills add masayan1126/masayan-uni-code-plugins --skill character
Clone the repo
git clone --depth 1 https://github.com/masayan1126/masayan-uni-code-plugins

Made for: Claude Code, Codex.

Or install gen-ai-image-prompt-creator, the plugin that ships this one along with the rest of its 7 skills, 7 commands.

Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 750 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00039 $0.00750
Opus 5 $0.00019 $0.00375
Sonnet 5 $0.00008 $0.00150
Haiku 4.5 $0.00004 $0.00075

Measured 3d ago against content hash 06a6714ef208, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

creating-characters scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/gen-ai-image-prompt-creator/skills/character/SKILL.md · 50 lines

What it actually says

キャラクター作成

ワークフロー

  1. アイデア確認: progress/ideas.md をチェックし、該当するアイデアがあれば提案
  2. 用途確認: アイコン/イラスト/漫画/ゲーム/マスコット/グッズ
  3. 設定ヒアリング: 性別・年齢、外見、性格、特徴
    • インコの場合: 種類を確認(シロハラ/コザクラ/サザナミ/オカメ)→ PARROTS.md 参照
  4. スタイル選択:
    • アニメ調
    • ゲーム調
    • ポップ調
    • リアル調
    • マスコット調
    • 手書き・ミニマル調
    • スケッチ調(鉛筆・デッサン/水彩/ボールペン/クレヨン)
    • ゆるキャラ調(動物マスコット用、A〜Dパターンあり)
  5. AIっぽさ緩和オプション確認: ANTI_AI_STYLE.md 参照
    • 「ベタ塗り」「デフォルメされたフォルム」を含めるか確認
  6. プロンプト生成: PROMPT_TEMPLATE.md 使用
    • インコ×スケッチ調の場合は専用テンプレート使用
    • ゆるキャラ調の場合: パターン選択(A:丸背景アイコン/B:ステッカー/C:4体セット/D:表情差分)
  7. タイトル提案: 作品にふさわしいタイトル案を3〜5個提示
    • 絵本風なら擬音語・問いかけ(「ぴょん!」「なあに?」)
    • アート作品なら情景・雰囲気(「おさんぽ日和」「静かな午後」)
    • キャラクター名があれば名前を活かす
  8. バリエーション提案(任意): 表情/ポーズ/衣装差分
  9. 成果物保存:
    • プロンプト: output/character/{タイトル}.md(ディレクトリがなければ作成)
    • 生成画像: output/character/images/{タイトル}.png
    • ゆるキャラの場合: output/yuru-chara/ 配下も可
  10. 進捗更新: progress/ideas.md を更新(完了したアイデアにチェック)

参照ファイル

必須ルール

  • 設定は具体的に記述
  • 用途に応じたスタイル選択
Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 50 lines · 39 tokens per session scan A 06a6714ef208

Subscribe to this mod's changes

creating-characters is a skill published in the GitHub repository masayan1126/masayan-uni-code-plugins (5 stars, last pushed 5mo ago), licensed MIT. It adds 39 tokens to every session and 750 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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