Whenever I put a new head on a character, the neck bone no longer affects the neck area of the hip. I am creating a cartoon set in the Navy and designed it to move the head to different bodies. I can do some workarounds, but this should be the best way to work.

This might be very a basic question, but have you reset the head sprite in composer mode after attaching it to the new body?

Yes. I just did the right thing and built a left facing character.

Looks like something from future season of South Park