The Urub Empire.

The Urub Empire is one of the larger nations of the Adronus,  it's planets include: Urub, the capital, Kerroi, Onnar, Evados, Ios, Zermon, Dal, 1, 3, 5, and 6, Lan, Nurven, and Burrus, and a host of species.  The imperial symbol is a cross shape, the vertical part is three red diamond-shapes, the finishing cross piece is two gold prongs, in between the top, bottom and cross piece are silver diamonds, the background is purple.  Urubs have white to silver skin, human-like eyes, brown, blond, black, violet hair, and they are usually slender and tall.  Males are roughly 6' 0" to 6' 4", and females are 6' 0" to 6' 2".  The Empire is advanced in technology, but they purposefully make some stuff look archaic, like hoplite helms and roman-style architecture.  The urubs don't get along with most other nations, especially prothesnos, humans, galxthoricans, and the barbarians.  the Empire is one of the oldest nations in the galaxy, originating on Urub.  Before the Empire, urubs lived in small nomadic tribes, but then Ur-Qall, united many of the tribes together into a massive kingdom.  Ur-Qall married his cousin and sister, as was the custom of chiefs in his tribe, and now is the custom of royalty of the Empire.  Ur- is short-hand for "king" in uruba, the official language of the Urubs.