God Magnus wrote:
Think of the Constructicons as a "model" of Transformer, much in the same vein as the classic "Seekers" Starscream, Thundercracker and Skywarp were three identical models except for colors. Each Constructicon could transform into an individual robot and potentially become part of Devastator. On the ship, Mixmaster, Long Haul and I think Rampage were shown transforming to robot mode and then diving into the water. The same exact model of Constructicons were shown later combining into Devastator, it's just that we didn't see them go into robot mode first.
So the constructicons who didn't form part of this particular Devastator could have since they were the same model as the ones who did? That makes more sense, though I didn't notice multiple models of each constructicon.