I'm still trying to learn this Photoshop recoloring thing so I can recolor toy images like I see here, but I'm quite frankly lost, as it doesn't seem to want to let me change colors, though I can affect shades of colors sometimes (but stuff like black and white are out, which is unfortunately vital here).
So, I instead took the instructions for Universe Prowl, and recolored him into a potential idea for what a Universe Barricade might look like. Try not to cringe too much:

I was hoping the idea might be of enough interest here for some guys to play with it, see what they come up with. I'd love to see an official version made, but I'm not holding my breath.
Characterwise, I like to think that maybe he and Prowl were teammates, perhaps even partners before the war broke out, though they each embodied one half of the "good cop, bad cop" thing, except it seems that Barricade really was a bad cop, and of course joins the Decepticons.
Had more detail than that, but it's been awhile.
Anyway, that's that until I can figure out how to mess with colors in this thing. In the meantime, I hope someone can do something with it.
(Oh, and that sickly green-yellow color is supposed to approximate gold, btw. Did I mention I'm no good at this?)
--LBD "Nytetrayn"