Gnashteeth is the fifth of the 2007 Micron Boosters available exclusively in Japan in blind-box packaging. A Predacon, he turns into a mechanical Tyrannosaurus rex. His coloring appears to be an homage to the original T Rex Megatron from the inaugural Beast Wars line. He is a redeco of Classics Mini-Con, Terrorsaur.
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.
