The Armada Optimus Prime could integrate with his auto-transforming trailer to create a super robot. By turning the basic Optimus Prime figure into its torso / upper body configuration, it would send an infrared signal to the trailer which would then auto-transform into a tall pair of legs to fit the upper body to. In turn, this version of Optimus Prime could be outfitted with massive shoulder cannons made of Overload.
The combined form of the Universe Micromaster Aerialbots is Superion, an amalgamation of six robots plus their pack-in accessories that serve as connectors, head, and extremities of the gestalt warrior. While in Japan, the original source of the design ( Sixwing , 1992) was available in a collected set, this combiner needed to be purchased one bot at a time in the 2007 Universe release.
