The biped is a hierarchy of special objects. Its parent object (Bip01) is also
called the center of mass or COM. The COM is displayed in the viewports
as a small tetrahedron, initially centered in the biped’s pelvis. After you
create a biped, only the center of mass object is selected (not the entire
biped).
After creating the biped, you change the values on the Create Biped
rollout to give the biped the appropriate links for your mesh.Change the number of fingers and toes:1 Change the Fingers parameter to different values. You can see the number
of fingers changing in viewports.874 | Chapter 5 Character-Animation Tutorials