sangtao.ai
API key

Account

Characters

Create a character once — name, looks, reference photos — so AI draws the same face across every Motion video.

A character is a person (or an animal, a mascot) you create once and reuse. When you make a Motion video with AI pictures, pick your characters and AI draws each one as themselves in the scenes they are in, in the video's style — the same face across all your videos, so you can build your brand.

Characters live in My library (left sidebar), on the Characters tab.

Create a character

Step 1. Open the character form

Go to My library, choose the Characters tab and click Create character (or the Create new character card at the end of the list).

Step 2. Fill in the basic info

  • Character name (required, up to 100 characters), e.g. "Meow Bear".
  • Aliases: other names, separated by commas. They help AI recognize the character when the script calls them by a different name.

Step 3. Describe the character for AI

  • Appearance description (up to 1,000 characters): AI uses it to keep the character's look consistent across all scenes. For example: "orange tabby cat, chubby body, half-closed drowsy eyes, white belly patch".
  • Biography / Role (up to 2,000 characters): helps AI understand the character's role and place them in the right scenes.

Step 4. Add reference photos

Add up to 3 photos (JPEG, PNG or WEBP, each under 10 MB). Three ways:

  • Click an Add photo slot to pick a file from your computer.
  • Copy an image and press Ctrl+V anywhere on the page.
  • Paste an image URL (https://...) into the box below and click Add. If it can't be loaded, save the image and upload it instead.

Click the × on a photo to remove it.

The "New character" page: Character name, Aliases, Appearance description, Biography / Role, the three Reference images slots, and the "Save character" button in the right column

Step 5. Save

Click Save character. You're taken back to the Characters tab, where the new character shows as a card with its photo, description and number of reference images.

Use characters in a Motion video

When you make a video from a template that uses AI pictures, the video form has a Characters section (optional):

  1. Open Characters and click the characters you want in the video — up to 5.
  2. None yet? Click Create a character — the form opens in a new tab; come back when you're done and the list updates.
  3. Carry on with the rest of the video steps as usual.

The section only appears for videos whose pictures are drawn by AI.

The Motion video form with the "Characters" section open, a few character cards shown and one picked (with a check mark)

Edit, share and delete

Each character card has three small buttons at the bottom:

  • Edit (pencil): reopen the form to change the details or add/remove photos.
  • Share with community: send the character to the community. It is reviewed before appearing publicly. The status on the card goes from Private to Pending review, then Shared. To take it back, click the button again (Remove from community).
  • Delete (trash can): delete the character.

See also