This is just a little blurb of info jotted down as I plan out a dnd campaign for friends built within the Dragonblade world. I did Elves a year or so ago. Now here's Catrek.
Catrek
Physical Description Height will range from 4'7'' to about 5'5''. They all share matching-colored cat ears and tail. Those with magic will have 'unnatural' fur colors, with a brighter tinge meaning stronger magic and layered colors pointing to growing potential. Their skin is very sensitive - seeing as they are nocturnal - and will tan or burn if exposed too long to the sun, though many samurai have forced themselves to have fluctuating sleeping habits, forcing their skin to grow accustomed to the sunlight.
Religion Shairokan is the Guardian God of the Catrek (though a few Humans worship him b/c of his gift of magic). He is the god of magic and destruction. After the Dragon Duel (where Shairokan was banished), the magi have split their caste into DarkMage (believe Shairokan was right for staring the war), and LightMage (believe Shairokan was controlled and that he is truthfully more for creation and growing than destruction).
The samurai religious sects, on the other hand, believe moreso in Avairean - that He has given Catrek a second chance; that Shairokan failed in his guardian duties. They believe that they are given cats (from mountain lions to house pets) to bond in order to prove that they can, coexist with Avairean's creation. And the act of bonding symbolizes this second-chance. They strive to please their bonded cat, believing them to have the voice of Avairean, who is the father of the fallen son - Shairokan.
Lifespan 500 years average (the shortest lifespan besides humans). They mature early, same rate as humans, but live in "middle age" for 400~ years. They are tested for magic as children, a yearly test because sometimes children who didn't test positive for magic, suddenly show signs of 'late bloomers' - sporting striped ears and tails as opposed to single colors.
Alignment Catrek are open to any alignment. However, samurai are always lawful and LightMages typically not chaotic.
Environment Catrek are a nocturnal race living in the mountains, mostly in scattered small villages or single family cabins. There is only the one Catrek city - the capital where the Mage Academy and Ruler's Palace sit. There is not much trade from Catrek to other races - they are hated worldwide and rulers have not opened any trade agreements.
History Catrek, in the beginning, followed Shairokan as he declared war on all other races. First they struck out at the Elves who were nearly annihilated and were separated into two clans because of the Catrek attack. They then enslaved the Wulfcon for thousands of years until Baxorth, the Wulfcon Savior who was created by the Wulfcon Goddess, rescued the enslaved pacifists. The Humans hate them because a group of Catrek magi were responsible for a Human King assassination that left a Human on the throne who allowed Catrek to live in Human lands under strict guidelines. There is particular hate between Catrek and the Riahlt (or Rangers) because it was the White Dragon (Nakoriash - Ranger guardian) who dueled the Black Dragon (Shairokan) and caused Shairokan to be banished by Avairean, and there has been mutual hatred between the two races ever since.