The previously posted "Hero" editions of Optimus Prime and Megatron were released in Europe in 1994, but the labels that identified them by name were stripped from the toys, and the on-package bios and names identified them as Sureshot (for Prime) and Archforce (for Megatron). These designs were otherwise not released in Europe. Why exactly they were kept from being Prime and Megs is unknown, but they technically count as unique characters. I combined them in this drawing here.
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.
