Taking a break from the beasts to cover Machine Wars, a short-lived program of Kay-Bee Toys exclusives from 1997 that brought back the vehicles-into-robots play pattern to Transformers. No Maximals or Predacons, these are Autobots and Decepticons. Most of the toys in this subset were redecos of ones released in the European market earlier in the 90s, but a few "new" designs surfaced as well, such as this one. The design was originally intended for Generation Two, but that toyline ended before it came to light. This is Hoist, the Autobot maintenance tech, who has been upgraded from a Toyota 4WD toy truck to a Kenworth W900 wrecker truck.
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.