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Character Consistency in AI Images with Nano Banana

Keep the same face, hair, and identity across scenes, outfits, and styles. Use strict preservation prompts so the model changes only the one thing you asked for.

~10–15s per generation

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Quick Answer

Character consistency means locking identity cues such as face, hair, expression, and body proportions while changing only one variable at a time. The most reliable workflow is image-to-image with explicit preservation constraints and a single editing objective.

How It Works

Upload a clear photo (good lighting, minimal blur).

Use a strict "preserve identity" prompt template.

Change ONE thing at a time (outfit OR background OR style).

Prompt Recipes

Copy a recipe, replace the [brackets] with your specifics, and generate.

Recipe 1 - Outfit change only

The safest approach to change clothing while keeping everything else identical.

CRITICAL: Keep the subject EXACTLY the same (face identity, hair, skin tone, expression, body proportions, pose, background, camera framing). ONLY CHANGE: replace clothing with [new outfit]. Photorealistic fabric folds. No text.

Recipe 2 - Style transfer (subtle)

Apply a style while preserving identity and composition.

Preserve identity and composition EXACTLY. Apply a subtle [style] look with realistic skin texture and natural shadows. Do NOT change face, hair, or background structure.

Recipe 3 - Background change only

Swap the background while keeping the subject perfectly intact.

Keep the subject EXACTLY the same. ONLY CHANGE the background to [new scene]. Match lighting direction and color temperature. Clean edges, no halos.

Try These Prompts Free

Common Issues & Quick Fixes

Face changes unintentionally

Fix: Add "DO NOT beautify or alter facial features in any way."

Background changes when you only wanted outfit change

Fix: Add "Keep background EXACTLY the same."

Too many things change at once

Fix: Rewrite prompt to "ONLY CHANGE: ..." (one objective only)

Frequently Asked Questions

AI models sometimes "beautify" or adjust faces by default. Adding strict constraints like "EXACT same face shape, eyes, nose, mouth, expression" helps preserve identity.

Clear portraits with good lighting, sharp focus, and minimal occlusion. Front-facing or 3/4 view works best.

Yes! Add "Keep background EXACTLY the same" to your prompt when you only want to change the outfit or style.

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Related Guides

Nano Banana Img2Img Hub

Back to the main Image-to-Image guide

Combine Photos

Merge elements from multiple images into one scene

Local Edits

Change specific parts without affecting the rest

Ready to keep character consistency?