A point of interest regarding Titan class Cybertron Metroplex. If you get the DNA Design upgrade kit for him, in addition to his Mini-Con, better hands, and (unnecessary, but still kinda nice) gap fillers for his shoulders, you get an extra joint that allows his bucket wheel to raise and lower in vehicle mode. But what's really interesting is that this extra joint provides just enough of an extension to the weapon's length that, when arranged vertically, it becomes roughly the same height as HasLab Unicron.