These puffy-armed bots are the last of the Autobot Metro Squad, Micromasters with a (supposedly) urban theme. One the left is Power Run, and the right is Strikedown, and together they combine to form a hovercraft. You know, the kind they have in cities? Not those small country town hovercrafts. Big city hovercraft. The Metro Squad was available in 1990. .
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.