How to Keep the Same Character in AI Video — the One-Photo Method

Clip one: your character, on a beach, perfect. Clip two: same character, a café — except now it is someone else. That is character drift, and it is not a bug you can prompt away; it is structural. Ordinary image-to-MP4 animates whatever still it is handed, so every new scene imports a new starting face, and every new starting face imports a few new millimeters.

Kling O3 \u2014 Kuaishou\u2019s current flagship \u2014 attacks the problem architecturally instead: you supply one reference photo, and it builds each scene around that person. Face, hair, wardrobe \u2014 sourced from your file every single time. Our Character Consistency page wraps exactly this; below, how to drive it and how to keep the lock tight.

The 3-step workflow

See it before you try it — one character photo + one scene photo = one video

👤 Character photo

🏞️ Scene photo

→

Output — Kling O3

No editing, no masks — the model staged the girl and the elephant from two ordinary photos. Source: Kling O3 official demo runs.

Step 1 — Upload one photo of your character

On the Character Consistency generator, the left slot is your character. One photo is all it takes — the best anchors are sharp, well-lit, front-facing shots with the face unobstructed. Pets and mascots work exactly the same way as people.

Step 2 — (Optional) add a scene photo

The right slot is a scene: upload a photo of a place — a restaurant, a landmark, your living room — and your character appears in it. Skip it and the scene is built from your prompt alone. This is the key difference from a normal generator: the who and the where are two separate inputs, so you can vary one without breaking the other.

Step 3 — Describe the scene and generate

Write where your character is and what they're doing: "She is eating takoyaki on a Tokyo street at night, neon lights, laughing at the camera." Pick 5, 10 or 15 seconds, toggle audio, and generate. Then — and this is the trick — reuse the exact same character photo for the next scene. Snow day, hotpot dinner, concert. Same face, new world.

Ready-made scene prompts to steal

Getting the strongest character lock

• Anchor photo quality beats quantity. One sharp frontal photo outperforms several blurry ones. Avoid sunglasses, extreme side angles and group shots.
• Light the face. The model reads identity from the face; a backlit or heavily shadowed photo weakens the lock.
• Describe the character's actions, not their appearance. The photo already defines how they look — spend your prompt on what they're doing and where.
• Extreme motion softens the lock. A quiet dinner scene holds identity better than a backflip. If the face drifts in an action shot, dial the motion down.
• Keep the same photo across the series. Consistency comes from reusing the identical reference — don't re-crop or re-filter it between scenes.

What it costs

On ImageToMP4, Kling O3 character-consistent clips start at 65 credits for 5 seconds (80 with native audio); 10s is 125/155 and 15s is 185/230. Every failed generation is refunded automatically, and the same balance works across all our models — so you can compare Kling 2.6 or Veo 3.1 on the same account.

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