What would you say if I said that the fastest way to make something Broken is to give it Druid levels?
A broken creature appears much as it did in life, though its back has been snapped and it moves about on all fours while bent over backwards. Its neck is twisted completely out of shape so that despite its posture its head faces rightside up.
Couldn't there be other optional mutilations? Like scars, exposed brains/bones, missing eyes/nose/teeth, long bloody bruises up and down its tattered flesh...