When a Character Looks the Wrong Age, Ethnicity or Skin Tone

Quick answer: A character’s look starts from the description written when your script was read, and the sheet in step 2 is drawn from it. If the age or background is wrong, fix the sheet first: open the character, put the age and background in the first sentence of Appearance (“a Black man in his fifties, grey at the temples”), save and regenerate. Or, on a paid plan, upload a photo; videos then follow the photo’s face, skin tone and clothes. Clips made before the change keep the old look, so regenerate the segments the character appears in.

Still from “Rocket Pup”, an AI short drama generated end-to-end by SceneMixer (7 characters, 1 episode) — Sample: “Rocket Pup” — Feature 3D Animation, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Open the character in step 2 and read the first sentence of Appearance: whatever it says about age and background is what every shot starts from.

Where the look comes from

When the script is read, each character gets a written description. If the script states an age or a background, that is used; if it does not, one is chosen to fit the story, and the Target Region you set in step 1 decides where the cast is from. The sheet is drawn from that description, and every video shot of the character starts from the sheet. Target region.

Fix the sheet first

In step 2, open the character.
In Appearance, put the age and background first, in plain words: a Korean woman of about twenty-two, a Nigerian man in his sixties. Keep the distinctive features that follow.
Save, then press Regenerate. Compare the new sheet with what you want before going further.

Regenerating a sheet is priced like an image, unless a free sheet covers it. Regenerate one sheet · Describe a face.

The episode asset library showing generated character sheets, location images and prop images — A character card in step 2: the image is made from what Appearance and Clothing say.

Or use a photo

On a paid plan, Upload & Replace puts your own image on the card. From then on, videos follow the photo’s face, skin tone and clothes rather than the written description. Pick a clear, front-facing photo with even light. Use your own photo.

Redo the clips

Segments generated before the fix keep the old look. Find the segments the character appears in and regenerate them; the old takes stay in Version History. Regenerate one segment.

If the sheet is right but a clip is not

When the sheet shows the right person and a clip still shows someone of another age or background, check that the shot names the character with an @ pill. If it does, do not keep regenerating: send feedback with the segment number. My character’s face changed.

The whole cast is from the wrong place

That is the target region. It is chosen before the reading and fixed afterwards; to move the whole story, start a new project with the same script and another region. For a few characters, fixing their sheets is quicker.

Problem	Where it comes from	Fix
One character's age or background	Their description	Edit Appearance, regenerate the sheet
Want an exact face	The sheet	Upload a photo (paid plan)
Old clips still show the old look	Made before the fix	Regenerate those segments
Sheet right, clip wrong	That clip	Check the @ pill; send feedback with the segment number
The whole cast	Target region	New project with another region

FAQ

Why did my character come out younger than I wrote?

Some visual styles draw people younger. State the age plainly in the first sentence of Appearance and regenerate the sheet.

I uploaded a photo and the video changed the skin tone.

Videos follow the photo. If a clip made after the upload does not, send feedback with the segment number; clips made before the upload need regenerating.

Does changing the description change existing videos?

No. Only clips generated afterwards.

Can I write the ethnicity in the script itself?

Yes. A script that states age and background gives the reading something to keep.

Fix the sheet, then the clips

Age and background first in Appearance, regenerate, then redo the segments.

Open your project

Updated October 2, 2026