Was organizing my small (thirteen) Megatron collection today, and noticed something. Optimus Prime has almost always been a truck of some kind. Whether it's been a standalone truck or had a separate trailer, he's just about always been a truck. Megatron started out as a gun (G1), then became a tank (G2), then ended up as something with half a dozen modes (RID), then another tank (Armada), then a jet (Energon) and finally a jet/batmobile (Cybertron). From there he's gone back and forth between "cybertronian jet" and "tank" some more, and most notably; a helicopter (To say nothing of the different-character BW Megatron who went from Tyrannosaurus to dragon to hovering robot-in-funky-robe-like-garment while Primal stayed as a gorilla throughout). My best guess is that he's always preferred a form suited to power while Prime relies more on his own inherent strength, but I'd like other opinions: Why do you think Megatron never seems to have a consistent alternate mode, while his arch-enemy does?