How to Keep the Same AI Character Across Every Video: Looks, Voices and Public Character Pages

To keep the same AI character across every video, build it once as a reusable character, with a written appearance, at least one generated look and a voice, and then cast that character into each video instead of describing them again in every prompt. In ReelMint that is the Character Studio: a look costs 20 credits and comes with a turnaround sheet so every scene gets every angle, and a character can be published on a public page at /c where others press "Use this character".

We build ReelMint. Character drift is the most common complaint about AI video: the hero has blue eyes in shot one and brown in shot three. This post shows how we keep a face stable, what each part of a character is for, and what goes public when you publish one.

Why characters drift, and what fixes it

A video model only knows what it is given in that one job. If the character is a sentence in the prompt, each clip invents a new person who fits the sentence. Two things stop that: a concrete written description the scenes use word for word, and reference pictures of the same face sent with every scene. A ReelMint character is both, saved once.

Step 1: create the character

Open the Character Studio and press New character. Give it:

• A name and a role, the short subtitle shown on its card ("Team Captain").
• A description: appearance and personality. Be specific: age, hair, eyes, build, the outfit, one distinctive detail. The more concrete it is, the less the face drifts.
• Optional reference images from your library, up to 5, to ground the likeness. A look can also be rendered from the description alone.

Step 2: render its looks (20 credits each)

A character with no look is a blank card, so render one straight away. Each look is one portrait in a visual style, plus a turnaround sheet of the same character from the front, sides and back, drawn right after it, so a scene that shows the character from behind still has something to copy. That pair costs 20 credits.

The styles include Classic, Anime Cinematic, Anime Style, Photoreal Cinematic, Live Action, 3D Animation, Claymation, Retro Comic, Flat Vector, Film Noir, Sci-Fi, Western, Horror and 90s VHS. You can add variations, a new outfit or a new setting, by describing the change under the image. Each variation can have its own reference images.

Step 3: give it a voice

Under Voice prompt, describe how the character sounds ("confident, deep tone") and a voice is cast from the description, or pick one of your own: a cloned voice or a designed one. That voice is used wherever the character speaks, in a Mint Studio scene, as the talking character in the corner of a video, or as the host of a live stream. To use your own voice, clone it first; see voice clone.

Step 4: cast it

• Mint Studio: type @ and the character's name in the prompt. On the mention you can pick which look the scene should use. Using a character adds no extra cost: the video is priced per scene either way.
• Groups: put characters together under one name, a team, a family, a crew, to cast or delete them together.
• Bot Studio series: a series bot builds its cast as characters with face sheets and voices, and films every episode against that cast (a bot that posts for you).
• Character Swap, Mint Live and Mint Stage take the same characters.

Step 5 (optional): publish a public page at /c

The Public page panel in the Character Studio publishes the character at its own address under reel-mint.com/c. The page shows the generated looks, the name, the role, the voice name and the author. Two rules:

• It needs at least one generated look. Publishing is disabled until there is one.
• The reference portrait is never public. An uploaded or researched portrait is not a generated look and never appears on the page, because it may be a photograph of a real person. Only generated looks are shown.

Tick Keep the descriptions private and the written persona and each look's description stay off the page; the pictures still show. You can unpublish at any time.

What "Use this character" does

A visitor on a public character page can press Use with the character's name. Signed in, it puts a copy of the character into their own cast, with the looks, the voice and (unless hidden) the descriptions, and opens Mint Studio with the character already mentioned in the prompt. The copy is free: nothing is generated and nothing is charged. It is their own copy, so if the author deletes the original, the visitor's cast is not affected. Pressing it twice opens the same copy rather than making another. Signed out, they are sent to sign up first and land in the studio with the character ready.

The Public switch in the Character Studio lists the same gallery inside the studio.

Honest limits

• A character keeps faces much steadier, but no model is perfect: very long multi-scene films can still drift slightly in small details.
• Models may refuse a recognisable real person's face as a reference. Characters you invent are the reliable path.
• Canon characters from existing anime or films are blocked by the models.

The video walkthrough is How to create reusable characters. Plans start at Lite, $9.99 a month for 800 credits.

How do I make an AI character look the same in every video?

Create it once as a character with a concrete description, a generated look and its turnaround sheet, then cast it with an @ mention in each video instead of re-describing it.

How much does a character look cost?

20 credits: one portrait in the chosen style plus a turnaround sheet of the same character from the front, sides and back.

Is my character's photo shown on its public page?

No. Only generated looks are shown. The uploaded or researched reference portrait is never public.

Does using someone else's public character cost anything?

No. "Use this character" copies it into your cast for free. You pay only for the videos you then make with it.

Can a character have a voice?

Yes. Describe the voice, or pick a cloned or designed voice; the character speaks in it everywhere it appears.