[Cobalt Katze]

A lot of the reasoning behind the two "teams" has to do with the KOS settings for races. For example, Goblins, Orcs and Dark Elves are KOS in nearly every major settlement except for eachother's and the two Varan societies (Varanthrari & Varanjar). The outcasts tend to stick together, which is what the case seems to be. Of course, if you get into the Martok lore, you'll realize that the Martok people are in fact rather just and honorable whereas the Gulgrethor clan are the greenskins responsible for ransacking the world and embracing chaos, giving the allied races a bad name.