The Greenskins are a highly primitive and warlike race of bestial humanoid barbarians and raiders that occupy much of the Eastern Hemisphere of the Old World. The term "Greenskins" is a common collective description used by many civilized nations to refer to the forces of the Orcs and Goblins and other biologically related races.

The broadest division is between the Orcs, who are strong, brutish, and savage warriors, and the Goblins, who are smaller and weaker, but cunning and conniving creatures. The Greenskins are considered by many to be the scourge of all civilization. These tribal warriors are extremely violent, raiding ceaselessly, carrying war and barbarism to all corners of the known world. Time and again, hordes of Greenskins would arise without warning and lay a great swath of destruction that had no direction or purpose other than simple violence. Indeed, the Greenskins race's single motive is violence, an ever-increasing mass of warfare that has the potential to dominate and cover the entire world in a seething green tide.