If you've seen the episode "Nemesis Prime" or at least began putting the clues together when the episode's preview was originally shown, you've realized that Nemesis Prime is the current status of MECH's Project Chimera. While not completely identical in outward appearance or even voice, Nemesis can pass off as Optimus kind of convincingly. Given that the remote-controlled bot matches Optimus Prime in size for both vehicle and robot modes, I gotta wonder: Do T-cogs (in this continuity at least) direct mass-shifting between the different modes as well? Every Transformer in the show - or at least every automotive one - is larger in robot than vehicle mode, after all, and that includes Nemesis Prime. (And yeah, the production reason was probably not wanting to always have Nemesis be at least a head shorter than Optimus, which could've thrown off the deception a bit more anyway.) *If any of the above should be covered up for spoiler reasons as well, feel free to say so.