Well, OK it may not be a real hidden feature, but it is still cool. He has a hole in his back that perfectly fits onto the Marvel Legends display stands to allow hime to be in some more dynamic poses. I currently have him flying back John Woo style while fighting Unicron. The best part of all is that it requires no modding of the fig and doesn't cause any stress marks etc. It is a perfect fit. Maybe if I have time later I'll post pics, but if you have Hot Rod and a Marvel Legend stand it is pretty self explanitory.