The classic juggernaut of Generation One is reimagined for Energon in a form that pays homage to the original but adds a lot more. Omega is a combiner that collects several vehicle components -- the Omega Train and the Omega Battleship -- into a large robot. The train and battleship can also combine to become a super train vehicle. Omega Supreme is also a "Headmaster," with the small robot Omega turning into the head of the giant robot. Making it truly an Energon entry, the Powerlinx play feature lets Optimus Prime fit into Omega's chest cavity, turning it into a supercharged Optimus Supreme (or Powerlinx Omega Supreme, if you prefer).
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.
