The Frozen Star amoung us
Humans call them lizards because they resemble nothing more than a Earth lizard walking on two legs with arms. Colored patterns swirl around their bodies, similar to Earth snakes they can be found in all sorts of wild colors. They have a foward sloping neck/head sitting atop their powerful shoulders. Their thick leathery skin is tougher than most races, enabling them to shrug off most sidearm attacks. Some Tursk offshoots have been known to develop poison sacks.
Their isolation from the Galactic Civilization means they are generally less refined than other races. They have even ritualized a brutal sport in which they bash each other with clubs until blood is drawn, sometime depending on the contestants this can take hours.
There is a distinct lack of trust of Tursk by most humans due to their war over territory. The Tursk view this war as both exhilerating, bashing human heads was good sport, and humiliating, the Der’Rum intervention made both parties look like children and the Tursk don’t like looking like Children.