Slam Girl
AI-Powered 3D Avatar Experience
Published 2024
Services
Web-Based Experience Design
3D Avatar Development & Animation
AI-Powered Conversational Engine
Backend & Infrastructure
Timeline
Under 3 months
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 Slam Girl 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.
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:
Responds to user questions in real time
Speaks using a voice that sounds like past episodes
Shows facial expressions and lip movement
Works smoothly on both desktop and mobile browsers
Feels polished and alive
The challenge was to combine voice, animation, and AI into one simple, web-based experience.
Our Solution
We built a complete AI avatar experience. Fans can 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 version of Slam Girl that feels responsive, animated, and interactive.
What we built
1. 3D Avatar with Animations
We started with a static 3D model of Slam Girl and prepared it for web use.
Cleaned up the model’s structure and rig
Added idle animations like breathing and blinking
Built a set of mouth shapes to match different sounds
Synced the mouth movements to match speech output
This allowed the avatar to show basic facial expressions and talk in a believable way.
2. AI Brain and Custom Voice
We connected Slam Girl’s personality and knowledge to an AI model.
Used OpenAI to generate replies to user questions
Added a vector database to store background knowledge and past dialogue
Trained a custom voice with Eleven Labs using recordings from old shows
Each message was turned into speech and played through the avatar while her mouth moved to match the sound.
3. Lightweight Web App
We used BabylonJS to build the visual experience.
The chatbot appears on one side of the screen
The 3D animated Slam Girl is shown on the other
Background graphics help give the site a more finished look
Everything works in a web browser, with no need to install an app
This makes the experience easy to access and run smoothly on both desktop and mobile.
What made this project complex
Syncing multiple things at once: the AI text, speech, and lip movement had to happen together, without delays
Making speech look real using only a few mouth shapes blended in the right way
Optimising a full 3D model to run on the web without slowing things down
Getting the same experience to work across different screen sizes and devices
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 character in a new medium
Build deeper fan engagement through interaction
Explore new creative and commercial uses for AI in entertainment
Timeline
We built the full system in under 3 months. That included:
Rigging and animating the 3D model
Training the voice and integrating AI speech
Building the chat flow and syncing it with animation
Launching the web app for desktop and mobile use
Tech Specs
Frontend
HTML, CSS, JavaScript
BabylonJS for rendering the 3D avatar
Responsive design with split-screen layout
3D and Animation
FBX model cleaned and re-rigged for the web
Blend shapes for different mouth sounds
Idle animations like breathing and blinking
AI & Speech
OpenAI for generating replies
Pinecone (vector database) for Slam Girl’s memory
Eleven Labs for voice generation
Real-time sync engine for speech, mouth movement, and chatbot response
Backend Infrastructure
Node.js for backend logic
Google Cloud hosting for scale and availability
Lightweight setup to support smooth performance on mobile and desktop
