Based on "Modelling a Lego Brick Figure | Blender 2.91 Tutorial" at https://www.youtube.com/watch?v=ySjDWDFNinA Based on "How I Make Custom LEGO Heads in Blender ...
The Blender BVH importer has a bug. If you try to import a BVH file which has Japanese bone names, it won't import into Blender, and you will get an error message ...