Rattrap undergoes another reformatting to have a new look in both the Beast Machines animated series and toyline. He turns into a techno-organic rat, probably the biggest, nastiest looking rodent mode he's had since his toys started. His robot mode can either have legs or wheels, as illustrated here. He was available in 2000.
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.