Say what you want about Kuru, but she's always ready to serve her empire and more than motivated when on the field. That's why she's a general now.
Having the Makir army on your side is a double-edged sword. They will absolutely annihilate your enemies and get things done, but they'll probably ask you things in return that will make you question if it was all worth it.
But then they're GIANT FUCKING ALIENS. How can you resist.