Always save a backup version of your model before running the auto-rigging script. Conclusion
Here’s a concise, informative write-up on (commonly referred to when users search “auto-rig blender”), the most popular automatic rigging add-on for Blender.
However, in the world of Blender, has revolutionized this workflow.
Includes tools to export the rig and animation directly to game engines, maintaining bone naming conventions and orientation.