Some races are rarely seen outside of the monstrous capacity found in various monster manuals. Still, some GMs may want to give players the option to play as one of these races in their campaign. I have even held campaigns where all the PCs were part of a monstrous race and the common races were the antagonists.
In Traykon, Gnolls are the primary humanoid enemy race of civilization. While an entire civilization of Gnolls exists in the far north, the rest of the race is scattered throughout the realm in tribal encampments. Occasionally some members of this species becomes disillusioned with their tribal life and seek to make their mark as an adventurer.