[@6slyboy6]

Basically they are from the Milky Way. A planet that was Catchatan-level stuff. They were originally human but slowly morphed into reddish versions.

Joined a badass military cult, got demoted due to some Imperial noble screwing them over. Their leader of the Order said 'distrust some, not all fat-cats'. Several unknown years later - the Order leaders think all Empire bad. But Emprah is good. It's like same God, different views policy.

And yes, it's still the Immortal Emperor.