Metal guts, that is. Which you can expose by removing his armor, piece by piece. With fully articulated fingers, tiny pistons and a height that looks to be around 15", he has everything you'd want in an ultimate Optimus toy, except one thing.
Can you guess what that is?
Here's a hint - it's antithetical to the name of the toy line he's part of. Yep, if you want a truck mode, you're gonna have to look elsewhere. And as much as I like Prime as a character, I buy Transformers toys because they transform.
Now, if I could only figure out how my He-Man figure masters the universe, I'll be intellectually consistent.
More pics over at Seibertron.