Well, some of my custom faction descriptions 
Atlantean Trade Union (good)
The long since forgotten civilization of Atlantis did not completely plunge into the depths of myth, a few of the very wealthy aristocrats, aboard their great merchant ships at the time of the disaster, managed to find themselves another home. At which point they came together to form the trade union, anonymous to their origins but powerful in wealth.
Draconian Hive (evil)
Ancient dragons once intermingled with poor human women, who later gave birth to abominations, rejected by all, feared by none. Now, after centuries of establishing their own society, with the hatred for their old human mothers, and longing for a reunion with their draconian fathers, they seek out to penetrate their will through the lands..
Fay Kingdom (good)
The Fay Kingdom have recently resurfaced upon the barren soil of the world, ready to restore their once vibrant flourishing culture!
Hyborian Monarchy (good)
The brave, strong and sturdy men and women of the northern wastes of Hyboria set out to colonize and claim these lands in search of honour, gold and wenches!
Orc Tribes (evil)
The Orcs have long awaited deep underground, biding their time fighting tribe versus tribe over who is most worthy to once again roam the great plains above, in search of honour and fresh pork!
Northern Wolves (good)
The Northern Wolves have endured long harsh winters, now they seek expansion into warmer regions.
The Wraith (evil)
The Wraith have long slumbered in their great hive ships, recently stumbling upon this world by mere chance, again.. No culling has taken place for thousands of years, after the last one proved a bit too, excessive.