VRM & Model Support

We don't play favorites. VRM, Meshy, TripoAI, Character Creator, Ready Player Me, generic GLB — they all just work.

Supported Formats

VRM Models VRM

VRM is the avatar standard of the future. Created by VRoid Studio or exported from Ready Player Me, VRM files come loaded with extras:

• Spring bones — Hair, clothing, and accessories with physics simulation (learn more)
• Facial expressions — Pre-defined morph targets for emotions (learn more)
• Standard bone naming — Consistent IDs that make retargeting reliable
• First-person settings — Head mesh visibility for VR applications

Ready Player Me RPM

Ready Player Me avatars are GLB files with a specific bone hierarchy. BlackBox detects RPM models by their signature:

• 13 finger bones per hand (thumb, index, middle, ring, pinky with 2-3 segments each)
• Eye bones (LeftEye, RightEye) for gaze tracking
• Spine naming uses Spine1 / Spine2 (not Spine01)

RPM avatars work seamlessly with animation retargeting — Mixamo animations map perfectly onto the RPM bone structure.

Meshy3D Meshy

Meshy generates AI-powered 3D characters from text prompts or images. Export as GLB or FBX — both work. These models have a distinctive trait: the armature is scaled at 0.01 compared to most other platforms.

BlackBox handles this automatically:

• Camera distance adjusts for the small scale
• IK solver normalizes scale internally
• Both T-pose and A-pose models are supported
• Export for Blender applies 100x scale normalization to fix bone visibility

TripoAI TripoAI

TripoAI is an AI 3D generation platform that creates rigged characters from text or images. Export as GLB or FBX and load directly. TripoAI models use their own bone naming conventions, which BlackBox maps to the standard bone IDs during retargeting. Load, retarget, animate — same workflow as everything else.

Character Creator 3 CC3

Reallusion's Character Creator produces highly detailed characters with professional rigging. BlackBox recognizes CC3 bone naming and maps it for retargeting. Export your CC3 character as GLB or FBX and import directly.

Generic GLB GLB

Got a model from somewhere else entirely? If it's a rigged GLB with a standard humanoid skeleton, there's a good chance it'll work. BlackBox uses fuzzy bone matching as a fallback when no platform is detected:

• Looks for common bone name patterns (hips, spine, arm, leg, hand, head)
• Handles variations in naming (UpperArm vs upperArm vs upper_arm)
• Maps what it can find, skips what it can't

How Platform Detection Works

When you load a model, BoneMapper analyzes the skeleton structure:

1. Bone naming analysis — Each platform has distinctive naming patterns (Mixamo uses mixamorig: prefix, VRM uses standard IDs, Meshy has its own conventions)
2. Hierarchy fingerprinting — The number and arrangement of bones, especially finger counts and spine segments
3. Scale detection — Meshy3D's 0.01 scale is a dead giveaway
4. Platform assignment — The detected platform determines which bone mapping table to use for retargeting

This all happens in under 50 milliseconds. By the time your model renders, BlackBox already knows exactly what it's working with.

What's Next