OOC: As much as I hate using the "imagine a cross between these two character images" -- I do lack a single image (and the artistic talent) to bring to the table.

So for Gezri in uniform, picture something like these three images.



To be a little more specific, I'm digging the spine and spiral-like grooves on the first (darker) image.  It just screams "alien" to me (so much so that it reminds me of the xenomorph in the Alien franchise), and that definitely has the feel I'm going for.  But it's lacking the tail -- for that, we head to the second image.  Throw in some claws like X-23 from the third picture, and you have the whole shebang!