I am still fresh in C2, but maybe... You create a body sprite (a blue rectangle for example) and a head sprite (red and smaller rectangle). Position red rectangle on top of blue rectangle... Give pin behaviour to head, and on start of layout, pin the head to body (position and angle perhaps.) Then you can check the collision seperately for the body and head.
If you have animations for this character, you can also create them and pin them to blue rectangle too. And then make the rectangles invisible.
I am sure there are better solutions but... Maybe this helps of gives new ideas.