The skellybones on the left has his helmet tilted at a rather rakish angle, maybe he was a bit of a dandy in his former life.
It's amazing how you can suggest a look or quirk of character by such a minor adjustment. My tilty-helmet klickies are the jokers of the garrison.
The early Playmos had a notch in the hair at the back, and a locating lug inside the hat, so you couldn't do this. It was extremely annoying (I recall, this is going back to my very earliest days of Playmobil), because with cowboy hats especially (I had Western as my firt theme) there was not obvious front or back, and it was easy to damage the hair trying to force the hat on back-to-front.