AI Character Generator: Build a Character You Can Reuse
An AI character generator is the workflow you use to design a character with AI and then keep that character visually consistent across hundreds of generations. The hard part is the consistency, not the first picture. The right setup uses Nano Banana 2.1 for the character sheet and Kling V3 to bring the character into video.
What an AI character generator actually has to do
Generating one cool picture of a character is easy. Every AI image tool can do that. Generating the same character twenty times in a row, in different scenes, with the same face and the same outfit and the same body, is the hard part. That's the whole job of a real AI character generator.
The naive workflow falls apart fast. You generate a picture you love, then write a slightly different prompt for the next scene, and the model gives you someone who looks 80% similar. By the tenth generation your protagonist has subtly become a different person, and any audience watching the project notices within a few panels.
The actual job is producing the same character every time, across stills and motion, for as long as you want to use them. That's a workflow problem more than a model problem. The model picks matter, but the system around them matters more.
The character sheet workflow that actually holds together
Step one: generate a single character image you love. Iterate 5-15 times in Nano Banana 2.1 until you land on a face, body, and outfit that work. Save the winner.
Step two: feed that image back to Nano Banana 2.1 and ask for a full character sheet. Front view, three-quarter view, side view, back view, plus an expression sheet (neutral, smiling, surprised, angry, sad). Nano Banana holds the character well across these angles because it's working from the source image as a reference. The sheet costs about $1 in API calls and takes a few minutes.
Step three: every future generation of this character feeds the character sheet as a reference image. Write the new scene description, attach the sheet, generate. The character holds together because the sheet is doing the consistency work.
Step four: when the character needs to be in motion, take any still and feed it to Kling V3 as a starting frame. Write a camera direction prompt. Kling generates 3-15 seconds of motion that holds the character's identity. For 4K hero shots, run Kling 3.0 at native 4K.
What it costs to design and run an AI character
Initial design is cheap. Generating the character (5-15 iterations) plus the master sheet runs $1-2 in Nano Banana 2.1 calls.
Ongoing use is also cheap because every future generation just adds a reference image to a normal Nano Banana call. So a typical project with 50 character images uses about 150 credits at 1K. Add a few 10-second Kling clips for animated scenes, 42 credits each, and a full character-driven project lands around 360 credits.
Compare that to subscription character generator tools that charge $15-30 per month for limited credits and don't actually solve the consistency problem (most just call the same models you'd call directly). The math is over once you've used the character for more than a couple of weeks.
Use the Seedance Face row for character work
For realistic AI-generated human characters, use the Seedance 2.0 · Face row in Slates' model picker. It accepts the face reference at its own credit price. Real people go through a consent dialog.
Seedance is fine for stylized or non-human characters (animated style, animals, monsters, abstract figures), and it's actually preferable for those because the audio sync is built into the model. For realistic AI-generated people, choose the Face row; for real people, use the consent dialog.
Frequently asked questions
What is an AI character generator?+
An AI character generator is the workflow you use to design a character with AI and then keep that character visually consistent across hundreds of future generations. It covers the initial character design, the master character sheet, and the system for attaching that sheet as a reference to every new generation so the face, body, and style hold together.
Which AI is best for character design?+
Nano Banana 2.1 is the default for the still images and the character sheet because it holds many subjects coherently in one frame and costs 3 credits per image at 1K. Kling V3 is the best video model for character work because it executes written camera moves and retains faces well. FLUX 3 Image is the fallback when Nano Banana's content filter blocks a prompt.
How do I keep an AI character looking consistent across scenes?+
Generate a master character sheet (front, three-quarter, side, back, plus expressions) once and feed it as a reference image to every future generation. The reference does the consistency work. Without the sheet, the model drifts within a few generations. With the sheet, the same character holds together across hundreds of scenes.
How much does it cost to generate an AI character?+
A few dozen credits to design the character and generate the initial master sheet. Then 3 credits per future generation on Nano Banana 2.1 at 1K as you build out the character's library of poses, scenes, and expressions. A full project of 50 character images plus five 10-second animated clips uses about 360 credits with no subscription.
Can I animate an AI character into video?+
Yes. Take any still of your character and feed it to Kling V3 as a starting frame, then write a camera direction prompt for the motion you want. Kling holds the face well during the shot. For 4K hero shots, use Kling 3.0 at native 4K. Seedance 2.0 also works: use its Face row for AI-generated faces and its consent dialog for real people.
Related
Build a character that holds up across a project
Slates handles the master character sheet, the @mention reference system, and the multi-model workflow that takes your character from a single still all the way through animated video clips on a real timeline.
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