the 2 ROTF human alliance bikes chromia and arcee??why the hell is arcee on chromias body and chromias on arcees body WHY THE HELL!!
because in the movie ROTF Mikalea rode a red/pink bike, and Hasbro wanted to represnt said bike somehow.
that doesnt explain anything they could have painted the arcee mold to look like arcee aka a red/pink bike
Or you could just not buy them because the molds are terrible. Save yoiurself the mental anguish of worrying about the names and $20.