Motorcycles tend to be tricky designs to execute in Transformers toys. Play value and appropriate scaling are often at odds, since cars typically form the baseline scale of the figures, the motorcycles have to be outsized in order to be producable as poseable, transformable toys. Hightail is no different -- turning into a rather big motorcycle. But, as added play value he is perfectly scaled for 3 3/4" action figures to ride. So your G.I.JOE or Star Wars figures can ride Hightail around. Hightail was available at retail in 2006 and came with a Cyber Planet Key that unlocked additional weapons systems.
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.
