Bring an animated GLB into Unity

What an import creates

Select Import. The tool requests a free export and checks that the download link comes from Bake3D. It downloads to the project’s Temp folder and moves the GLB to Assets/Bake3D/<Character>/ under a unique name. Then it:

• switches the glTFast importer to Mecanim clips;
• saves an editable copy of each clip, with looping taken from the export’s extras.bake3d.loop flag;
• creates an AnimatorController with those clips;
• places the character at the origin and selects it.

Exports are grounded, centred on the origin and face +Z. glTFast keeps that axis as Unity’s forward. Set Height (m) to scale the export to a real-world height, or leave it at 0 to keep the generated size.

Root motion

Every export’s skeleton starts with motion_root, an unweighted joint on the ground at the origin. With Bake travel into the root bone on, that joint carries only planar travel and heading; the hips keep their bob and jump. The tool builds a Generic avatar whose root node is motion_root and sets the Animator’s Apply Root Motion to match your choice. With the option off, motion_root stays still and the character animates in place, keeping vertical motion such as a jump.

Check whether root motion belongs to the clip or to your gameplay controller so the object does not move twice.

Use a skeleton workflow that fits the object

Humanoid retargeting assumes an appropriate human-like bone mapping. A fox, a multi-limbed creature or a vehicle should not be forced into that mapping simply because it has a skeleton. For arbitrary creatures and objects, keep the imported hierarchy and the Generic avatar, and assign the intended clip to your animation setup.

Import a GLB manually

Copy an exported GLB into your project’s Assets folder. glTFast imports glTF content into Unity assets and prefabs. Select the imported file to inspect warnings, set its animation method, then expand it in the Project window to review its meshes, materials, textures and AnimationClips. These importer behaviours are documented in the official glTFast editor-import guide.

No export of your own yet? Use a free test model. Our free rigged and animated 3D models are Bake3D exports of a fox, a robot, an old man and a T. rex, with three to five clips each. Each one also comes as an FBX with its walk, which Unity imports without glTFast.

Before using the asset in a game

Place the character in a test scene with a known scale reference and simple lighting. Check the whole object rather than only its front-facing thumbnail. Review joint deformation, animation transitions, loop boundaries and materials under the lighting you intend to ship. Add the gameplay-specific components your project needs, such as collision, controllers and interaction logic. A generated rig and animation do not automatically provide those systems.

If a result looks wrong, first inspect the rig and motion, then compare the source GLB in another viewer. This helps separate a source-asset problem from an importer or animation-controller issue. The integration reference summarises the setup.