How to Create Consistent AI Characters in LongStories

Who this is for

Creators, filmmakers, and storytellers who want their AI-generated characters to look the same across multiple videos, scenes, and styles — without rebuilding from scratch every time.

Overview

Character consistency is one of the hardest problems in AI video. Every new generation risks a slightly different face, outfit, or vibe. LongStories solves this with a dedicated Characters system: create a character once — from a photo or a description — refine it, give it a voice, and reuse it across any universe or scene.

Step-by-step workflow

1. Open the Characters page

1. Log in to LongStories.
2. Click Characters in the sidebar.
3. You'll see your saved characters and the option to create a new one.

2. Start a new character

1. Click Create Character.
2. Choose your creation method:

• Upload Image — upload a photo and let AI analyze the character. The fastest path to visual consistency.
• Create Manually — describe the character with text.

Tip: for most use cases, image upload is the better starting point. A strong reference image gives the model something concrete to anchor to.

3. Upload a reference image

1. Pick a clear, front-facing photo or illustration of your character.
2. Upload it, and LongStories analyzes the Image and extracts:

• Physical appearance — face, hair, body type
• Clothing and accessories
• Overall style and visual vibe

4. Review and refine the description

Once analysis completes, review the generated details carefully:

• Face, hair, and body type — accurate?
• Clothing and accessories — captured?
• Style — does it read as cinematic, cartoon, realistic?

Edit anything that feels off — this description is what the model leans on to keep the character consistent.

5. Give them a voice (optional)

The last step lets you assign a voice to the character. When they have dialogue in a script, LongStories automatically speaks their lines in that voice — a consistent voice is as recognizable as a consistent face. If you skip this, the AI casts a fitting voice the first time they speak.

6. Generate a reference sheet

On the character's page, generate a Character Reference Sheet — this is the biggest consistency upgrade available. Two options:

• Basic Sheet — a single auto-generated reference image. Quick and simple.
• Premium Sheet — LongStories generates 4 base images; you pick the one that best represents your character, and it's expanded into an 8-pose reference sheet. Better consistency for complex characters (uses credits, charged only after the full Sheet is ready).

The reference sheet gives the system multiple visual anchors — same face, same outfit, from multiple angles — and every scene the character appears in is generated against it.

7. Preview them across universes

The character page also shows what your character will look like in each universe — the same person rendered in each universe's visual style. Check this before committing to an episode, and regenerate any preview that misses the mark.

Example use case

You're producing a 5-part mini-series with the same protagonist. Create the character once from a strong reference image, refine the description, generate a Premium reference sheet, and plug them into all five episodes — no more "different person every time" syndrome.

Pro tips for filmmakers

• Use a neutral-expression, front-facing Image as your primary reference — it gives the model the cleanest read on facial structure.
• If your character has a signature outfit or accessory, describe it explicitly in the text fields, not just in the Image.
• Test before committing: run a short storyboard scene with the character and verify the look before a full production run.

Watch the tutorial

How to Create Consistent AI Characters in LongStories (YouTube)

Updated on: 03/08/2026