This is what I got instead of the promised FA version. I don't even know anything about the Barzam because I'm a Federation fan! Or Gundam and co. since we're talking about the Titans here.
So, at first I hated this thing, mostly because it was unwanted. Like an unplanned pregnancy. Or getting sexually harassed at work. Or.. I think you get the idea.
But after completing it, hmm, it's not bad looking. Not the nicest mono-eye in my opinion but just nice enough and better looking than Zogok and friends.
But to change from RX-178 to RMS-154, I had to strip the GFF to the following nude state. Impressive that Bandai paid a little attention and detailed the inner frame slightly. Or it could just be pin marks from production, cause why should I be defending Bandai.
The RMS-154, surprisingly scores better than the R-178 with a 5/10. Wow, I wouldn't have imagined, but the Barzam body looked more proportionate anyway.