The next Classic Pretender is Bumblebee, a major player in the original animated series. This is his first reissue as Bumblebee (Goldbug was a renaming and, depending on what continuity you subscribe to, possibly a different character), and he still turns into a Volkswagen Beetle. His Pretender shell is an armored human warrior.
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.