The last of the Dirt Digger Team is Oil Slick. This Decepticon-allied Mini-Con turns into a muscle car. He was packed alongside Grindor and Dirt Rocket, and available as part of the Classics line in 2006-2007.
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.