Trogg character biped rig

This is a segmented character with non-deforming parts like armor simply linked to the appropriate body parts, and rotated as needed at extreme body positions to avoid intersecting other parts.

The hair poly has the flex modifier:

The mouth can be specifically animated by rotating the small boxes ... the linked helpers are required for the boxes to be “read” as bones by the skin modifier:

 

This demonstrates 4 morph target expressions: