More ideas from Pat
Revoltechs use both single and double hinge joints with a pivot point. A double hinge version is not uncommon, and increases the already large amount freedom of motions the toys have

Revoltech "Revolver Joint" - ratcheting joint (small size and multiple areas of motion allow for impressive articulation)

ArtStation - Ghost in the Shell - Early concept work, Andrew Baker

I got to work on some early concepts for Ghost in the Shell along with the Weta team. This was an idea for the skeleton and "shell" construction. I liked the idea of making the internal structure very machine like and using printing to lay