Rav was part of a subset of toys called Deployers, which transformed from animals into vehicles or weapons. As such, Rav doesn't have a robot mode per se. Rav turns from a mechanical raven with a clear red plastic finish into a siege crossbow weapon that fires "Energon bolts" - an actual launching play feature in the toy. 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.