Rig

A Rig is a ScriptableObject that contains baked joint and animation data. This asset is shared across multiple instances of the same armature type. It primarily stores serialized binary data for the Armature and Motion structures. In this package, it is created by the RigImporter from assets with the .rig extension.

Creation

To create a Rig asset in the Project view, right-click to open the context menu, then select Create/Rig.
It can also be created via the top menu by navigating to Assets/Create/Rig.
This will generate an asset with the .rig extension.