The asset is a runtime.

Load an official FBX fixture, inspect what the loader actually returns, then drive its clips through an AnimationMixer without hiding scale, coordinate, or failure boundaries.

loader

—

request

—

meshes

—

skinned / bones

—

materials / textures

—

animation clips

—

bounds

—

sample

NOT RUN

LOADING MANAGER / WAITING Z-UP ROOT / —

The FBX loader owns parsing; the returned Group owns meshes, skeletons, textures, and AnimationMixer actions until explicit release.

Sources: FBXLoader · LoadingManager · AnimationMixer · official FBX example