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Slam Girl

A talking AI 3D avatar of Stan Lee's Slam Girl

An AI-powered 3D avatar experience that lets fans talk to Slam Girl, the superhero created by Stan Lee and Will Meugniot, hear her voice and watch her respond.

Partner: Stan Lee Media Holdings
Character: Slam GirlSuperhero created by Stan Lee and Will Meugniot
Services: Web-Based Experience Design
3D Avatar Development & Animation
AI-Powered Conversational Engine
Backend & Infrastructure

Slam Girl cover

Watch the trailer

About Slam Girl

Slam Girl is a superhero character created by Stan Lee and Will Meugniot. To bring her to life in a modern way, Stan Lee Media Holdings wanted to turn her into an AI-powered 3D avatar that fans could interact with directly. The goal was to let people have conversations with her, hear her voice, and see her respond like a real animated character.

Slam Girl chat app on a phone and laptop, shown beside printed comic pages and sketches

The problem

Stan Lee Media Holdings had a well-known character but needed a new way for fans to connect with her. They wanted an avatar experience that:

The challenge was to combine voice, animation and AI into one simple, web-based experience.

Real-time repliesResponds to user questions in real time.

Her original voiceSpeaks using a voice that sounds like past episodes.

ExpressionShows facial expressions and lip movement.

Any browserWorks smoothly on both desktop and mobile browsers.

PolishFeels polished and alive.

Black and white portraits of Stan Lee and Will Meugniot either side of colour comic artwork of Slam Girl in action

Our solution

We built a complete AI avatar experience. Fans visit the website, chat with Slam Girl, hear her speak and watch her respond on screen. Her voice is generated from past episodes, and her replies come from a language model trained on her personality and backstory.

The result is a digital Slam Girl that feels responsive, animated and interactive.

What we built

3D avatar with animationsWe started with a static 3D model of Slam Girl and prepared it for the web. We cleaned up the model's structure and rig, added idle animations like breathing and blinking, built a set of mouth shapes for different sounds and synced mouth movement to the speech output. This let the avatar show basic facial expressions and talk in a believable way.

AI brain and custom voiceWe connected Slam Girl's personality and knowledge to an AI model. OpenAI generates replies to user questions, a vector database stores background knowledge and past dialogue, and a custom voice trained with Eleven Labs on recordings from old shows speaks each reply. Every message is turned into speech and played through the avatar while her mouth moves to match the sound.

Lightweight web appWe used BabylonJS to build the visual experience. The chatbot sits on one side of the screen and the animated 3D Slam Girl on the other, with background graphics giving the site a more finished look. Everything runs in a web browser with no app to install, so it is easy to access and runs smoothly on desktop and mobile.

What made it complex

Syncing everything at onceThe AI text, speech and lip movement had to happen together, without delays.

Believable speechMaking speech look real using only a few mouth shapes blended in the right way.

3D on the webOptimising a full 3D model to run in the browser without slowing things down.

Every screenGetting the same experience to work across different screen sizes and devices.

Slam Girl website hero with comic-style illustration and the Stan Lee and Will Meugniot credit

Results and impact

Slam Girl is now live as a real-time interactive avatar. Fans can speak to her, hear her talk and see her respond with movement and expressions. The experience shows how classic characters can be brought into a new format using AI and animation.

The project helped Stan Lee Media Holdings:

Relaunch a legacy characterBring Slam Girl into a new medium.

Deeper fan engagementBuild engagement through direct interaction.

New uses for AIExplore new creative and commercial uses for AI in entertainment.

Tech stack

Frontend: HTML, CSS, JavaScript + BabylonJSBabylonJS renders the 3D avatar. Responsive split-screen layout.
3D and Animation: FBX model, blend shapesModel cleaned and re-rigged for the web, blend shapes for mouth sounds, idle animations like breathing and blinking
AI & Speech: OpenAI + Pinecone + Eleven LabsOpenAI generates replies, Pinecone (vector database) holds Slam Girl's memory, Eleven Labs generates her voice. A real-time sync engine aligns speech, mouth movement and chatbot response.
Backend Infrastructure: Node.js + Google CloudNode.js for backend logic, Google Cloud hosting for scale and availability, lightweight setup for smooth performance on mobile and desktop

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