Build any avatar.
Bit by bit.
Atomic Rig is a browser-based modular 3D avatar builder. Snap bits onto a live skeleton, generate new parts with AI, buy and sell on a creator marketplace, and export a finished 3D file β no downloads, no installs.
Request Early AccessHow it works
Everything is modular. Every part connects to a bone. Every export is production-ready.
Bits
A bit is a single 3D mesh β a helmet, a shoulder pad, a jet pack. Every bit snaps to a bone on any Mixamo-compatible skeleton. Mix bits from any source, stack them freely.
Collections
Pre-assembled sets of bits β like "Cyberpunk Hand" covering every finger bone. Drop a collection onto any skeleton instantly. Collections are the fastest way to assemble a full rig.
Avatars
Your full creation. Skeleton plus every bit you've bolted on, exported as a GLB, straight from the browser. No game engine required to build.
Every tool you need
A real production tool β not a toy. Built for creators who want to move fast.
Live 3D editor with transform controls
Move, rotate, and scale every bit with precision handles. See changes happen in real time on the actual skeleton. What you see is exactly what exports.
AI-powered part generation
Upload a reference image β photo, sketch, or concept art β and GPU-powered AI turns it into a 3D bit in seconds. Attach it to any bone and keep building.
Full skeleton compatibility
Works with any Mixamo-compatible humanoid rig. Bones are intelligently mapped so bits align and deform correctly whether your skeleton is short, tall, or stylized.
Per-material editor
Adjust color, metalness, roughness, and transparency for every material on every bit. Changes are non-destructive and baked into the final export β no post-processing required.
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Sell what you build
List your bits and collections on the Atomic Rig Marketplace. No storefront to set up, no hosting to wrangle. Build it once, earn every time someone snaps it onto their rig.
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Get early access
We're onboarding a small group of testers. Leave your details and we'll reach out when your spot is ready.
No spam. No sharing your data. Just beta updates.