Creating realistic VR Chat avatars requires a clear workflow and reliable references. This guide walks you through core steps to build, customize, and export models that perform well in virtual worlds.
Use the structured overview below to compare common model formats, engines, and rig compatibility before you begin your first VR Chat model tutorial.
| Format | Engine Support | Rig Type | Typical Use |
|---|---|---|---|
| Unity Humanoid | Unity with VR Chat SDK | VR Chat Humanoid | Full body, expression control |
| GLTF 2.0 | Unity, Three.js, WebXR | Custom or generic rig | Cross-platform, web friendly |
| FBX | Unity, Unreal | Standard skeleton | High-poly characters, game engines |
| VR Chat Lip Sync | Unity only | Expression blendshapes | Automated viseme mapping |
Asset Preparation and Rig Selection
Start by choosing a compatible rig that matches VR Chat specifications. A humanoid rig with proper bone naming reduces cleanup work later.
Import base meshes into your engine and check scale, pivot points, and joint orientation. Fix flipped normals and overlapping vertices early to avoid export errors.
Recommended Rigs
- VR Chat default humanoid rig
- Unity Standard Humanoid
- Custom T-pose with named bones
Modeling and Retopology
Keep polygon counts balanced between detail and performance. Use quads around facial areas for better deformation during expressions.
Retopology for VR Chat often means creating a low-poly cage that follows your high-poke sculpt. This step is essential if you plan to animate or blend shapes.
Topology Tips
- Maintain consistent edge flow
- Avoid ngons on deform areas
- Separate body parts into clean meshes
Binding, Weights, and Testing
Bind the mesh to the skeleton and paint smooth vertex weights. Focus on elbows, knees, and jawline where artifacts commonly appear.
Use test animations to verify that the model deforms naturally. Adjust weight groups until poses look correct without collapsing surfaces.
Materials, Textures, and Export Settings
Set up UV layouts that avoid texture stretching. Export materials using engine-friendly shading models and keep texture resolutions within platform limits.
Export as GLTF or FBX with animations stripped unless needed. Enable mesh compression cautiously and verify collisions and collider placement before uploading.
Workflow Summary and Key Takeaways
- Choose a rig that matches VR Chat humanoid requirements
- Retopologize with clean quads and balanced edge flow
- Paint smooth vertex weights and validate with test poses
- Set up UVs and materials for engine-friendly rendering
- Export with verified settings and test in VR Chat early
FAQ
Reader questions
How do I verify my rig before importing into Unity?
Test the rig in a generic engine scene with standard pose libraries, check bone axis directions, and ensure no missing or duplicated joints.
What causes texture stretching on VR Chat avatars?
Incorrect UV scaling or non-power-of-two texture sizes often cause stretching; align UV shells to your intended material layout and bake carefully.
Why does my avatar clip through objects in VRChat? Check collider placement, adjust capsule and foot placement, and verify that no mesh parts penetrate world geometry. Can I reuse a commercial character model for VR Chat?
Review the license terms, confirm export permissions, and ensure rig compatibility, then adapt the model within VR Chat content policies.