This is just how Blender imports bones, I can't really do anything about that, the animations should still work correctly despite how it looks. I'm going to have to adjust the Anima FBX Animation files to be imported into Blender, I'll let you know when I update them.
I updated the Anima Animation files, I can't use a Mixamo skeleton for the animations, because the animations are exported from Unity, but the Animations should look much better than the FBX Alt files, let me know if you need anything else.
