Haven't seen this mentioned at all. I was fiddling with Megatron's fusion cannon to see if I could get it to combine better, and noticed his right arm has a trigger to make the mace swing. That black bit on the outside? You can push it back and forth to make the mace swing around. Here's the mace limp with my thumb on the button: And here it is with the button pushed up and the mace line is taut: By pushing and releasing the button, the mace swings all over. Not SUPER crazy or anything, but still kind of neat. Sorry for the picture quality. I'm at work and all I have is my cell phone camera.