The combined form of the previous four Constructicons is Devastator -- which is a redeco of Landfill/Build King from Robots in Disguise. Bonecrusher always forms the torso, but Scavenger, Long Haul and Hightower can swap places to be limbs, with their various add-on bits forming weapons or extra manipulators. This was available in 2006 from two sets of Target-exclusive two-packs.
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.
