How to Keep Character Consistency Across AI Images

You generate a perfect character. Then you try to put them in a second scene — and the face changes, the hair is different, the outfit drifts. Character consistency is one of the most common frustrations in AI image generation, especially for storyboards, ad campaigns, and brand mascots.

Here's a practical workflow to keep the same character across many images.

Why characters change between images

AI image models generate from scratch each time. Unless you give the model something to anchor to, it re-invents the person on every render. Consistency comes from anchoring — giving the model strong, reusable references instead of relying on words alone.

Step 1: Create a strong character reference

Start by generating (or uploading) one clean, well-lit "hero" image of your character: clear face, neutral pose, simple background. This becomes your anchor. Spend time getting this one right — everything downstream depends on it.

Step 2: Choose a model built for consistency

Some models are far better at character consistency than others. Models like NanoBanana Pro and Flux are designed with multi-reference and character-consistency features. In Prologue AI you can pick the model that's strongest for consistency rather than being locked into one.

Step 3: Use multi-reference / image conditioning

Instead of describing your character ("a woman with red hair"), pass the actual reference image as conditioning. Multi-reference models let you provide one or more images of the character so new generations match the face and features. This is dramatically more reliable than text descriptions.

Step 4: Save the character as a reusable element

Re-uploading references every time is slow and error-prone. Save your character as a reusable element so it can be dropped into any new generation. Prologue's element system is built for exactly this — define a character once, reuse it everywhere.

Step 5: Keep a fixed description block

Pair the reference image with a short, fixed text block describing immutable traits:

Same character: auburn hair, green eyes, light freckles, navy jacket. Keep face and outfit identical.

Reuse this block verbatim and only change the scene and pose.

Step 6: Change one variable at a time

When you move the character to a new scene, change only the background or pose — not the lighting style and the outfit and the camera all at once. Changing one variable per generation keeps the character recognizable.

Step 7: Curate and build a character set

Generate several options per scene and keep the ones that best match your hero image. Over time you build a consistent "character set" you can reuse across an entire campaign or story.

A repeatable workflow

1. Generate a clean hero reference.
2. Pick a consistency-focused model.
3. Condition new images on the reference (multi-reference).
4. Save the character as a reusable element.
5. Reuse a fixed trait block in every prompt.
6. Change one variable at a time.
7. Curate into a character set.

Try it

You can keep characters consistent across an entire project in Prologue AI — start free with 300 credits, no card required.