Not really that silly. They are "Partial Body Morphs" they are slaved to another dial on the figure throught EMC (Enhanced Motion Control). They are like a full body morph but they only effect 2 or 3 body parts. They are usually left alone at they work automatically when the master dial is turned. Sometimes one of the automatic morphs will cause a problem on just one of the slave morphs. Then you can use the pbm dial to manually dial that morph out. Nerd