I use to have Live Action Barbies. I don't know how the heads were. I can't remember if they have a neck knob or not. If they don't do not whatever you do try to remove the head as you will break it and no one will want it. I don't know why but I just seem to remember that Live Action isn't made the same way the others were, but for the life of me I can't remember if they had a neck knob or not. PJ was my favorite as well as LA Skipper with her straw curls.