From the 1988 Seacon team, here's Skalor. He turns into a coelacanth-inspired sea monster. He would be reissued in 1998 as part of the Seacon pirate team, though as a different character named Coelagon.
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.