The last of the Autobot car brothers, X-Brawn is the eldest of the three. a straight-shootin', straight-talkin' cowboy type. He turns into a Mercedes-Benz ML320 SUV, and his robot mode is a peculiarly asymmetrical shape with an oversized arm that includes his entire car hood as part of the design. In the Japanese incarnation of Robots in Disguise, the original 2000 Car Robots toyline and animated series, he was called Wildride. Imported to the US, he became X-Brawn.
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.
