@Ophidian
I wonder what your empire will think of the Kashar. I'm pretty sure a lot of people want to invade me right now though :P
Well, they're cold blooded snake people, though they likely rule over a human population to an extent. The real unifying factor is the religion-worship of the Snakefather (Yig) and other gods. Other religions tend to be taxed. Quite a bit. Which actually, in a roundabout way, makes them quite tolerant and less prone to conversion.
.....They like the shiny shiny tax money, and they wouldn't get it if everyone worshiped their gods now would they?
There's some possibility for reptilian unity going off that, but there's also the possibility they'd want to "civilize" you afterwards.