Quote Originally Posted by kup View Post
IMPORTANT: The above is incorrect and trying to split the head will result in breakage. The head IS NOT designed to come apart. It's a 'pop-in/pop-out' action to place it on the figure's neck joint, similar to a ball joint.
I don't know what happened in between the test shots and the final model but, the very first review of it (using a test shot) showed the head could split apart, which was how I found out about the long peg and the corresponding slot.