GUI's (Generic User Interface; in this case basic NURBS curve handles) for Robot rigs.
The facial expression comes from roll bars above the eyes and at the chin. Bit like Chappie, but I thought of it first, honestly.
Do love the work of concept artists http://christianpearce.blogspot.co.uk/2015/04/chappie-concept-art-part-1.html and Aaron Beck http://skul4aface.blogspot.co.uk though! Their work always looks like Boston Dynamics robots in ten years time!!