This is the largest faction and is equivalent in every way to the Empire of Vadriphose. Had at any time they so desired they could have easily wiped Treegum off the face of the world, but Treegum is so small they didn't really consider it worth thier time. Currently the Greenskins are involved in some internal strife, but once this strife is ended they will once again be a force to be feared. In times past the Greenskins were lead by a Greenskin named Gaunt. He is equivilant to the Emperor of Vadriphose.

Under him would be a group of Warlords. This system of rule existed until a Greenskin priest was able to gain enough influence with Gaunt to change this system of government. For reasons unknown to most this Greenskin priest lost favor and was branded a traitor and the Greenskin nation fell into internal strife until Gaunt, or perhaps some other Greenskin, can once again solidify his power. The Greenskins respect strength and strength in war above all things.

To some extent the reason the Greenskins allowed Treegum to exist was because of how they managed to continue to exist despite almost everything conspiring to destroy them. They respected thier strength and struggle to survive and only occassionally made small warlike moves against Treegum. The nearest Greenskin Warlord who controlled what we know of as the Iron Fortress was known as Flexior "The Strong Arm" until he was overthrown. The Iron Fortress is but one small area of a large Greenskin Nation.