The five Seacon pirates from Beast Wars can merge to form God Neptune, who is a redeco of 1988's Seacon combiner, Piranacon. The five Seacon pirates were available exclusively in a boxed set in Japan in 1998. Note that the original Seacon time had six members, as the sixth could become the combiner's weapon.
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.
