create the shape you want as a single object then go to the bone you want to change and type the name of the object you created. scaling the original object will scale the bone.
More renders. I made a short animation with him. I’ll post it later. He’s fully rigged with shape keys. His facial rig is 100% done. Now I’m creating other characters for a top secret project. I’m sure you will all hear about my latest “project” within a few weeks.