This is the standard workflow for developers and 3D artists requiring control over the final output.

Link your model’s skeleton to standard humanoid animations.

| Issue | Cause | Solution | | :--- | :--- | :--- | | | Rig is not recognized as Humanoid. | Ensure the model is in a T-Pose or A-Pose before export. Use Unity's "Enforce T-Pose" feature. | | Missing Bones Error | Source GLB lacks standard biped bones. | Add placeholder bones in Blender or rerig the mesh. VRM requires at least the main body bones. | | Eyes Not Moving | LookAt settings not configured. | In the VRM export window, configure the "LookAt" settings (Bone or BlendShape mode). | | Materials Pink/Broken | Shader incompatibility. | Reassign shaders in Unity to MToon or Standard . | | File Size Too Large | Textures are uncompressed or high-res

Converting GLB to VRM is a translation process. You are translating generic geometric data (GLB) into a standardized, interactive framework (VRM). Success depends not on the file extension, but on the integrity of the skeleton, the logic of the Shape Keys, and the configuration of the Spring Bones.

Moss loaded. She moved her webcam—the model’s head followed. She raised her eyebrows—Moss’s fungal eyes pulsed with a soft “Happy_Glow.” She turned her head left—the root-tail swayed gently behind, a perfect, organic bounce.