These warriors are all part of the United Clans of Kimmeria.
For years, two almost touching continents have been the ground of everlasting battles between the united humans of Kimmeria, and the abominations from the Ashkegara continent up north.
While the humans from the Southern Continent have discovered the Power of Steel, they have learned through the centuries that it was a force of nature that is to be used carefully, and so their lords and chiefs have been wise to exploit it with parcimony.
The people from the Northern Continent and their civilization on the other hand have evolved and plunged into darkness for time that man couldn't possibly measure. Their whole species have been deformed by their abusive use of Steel. Now, they are nothing but hollow monsters of Steel, and their continent's been drained, forcing them to find other sources of the precious metal they are now dependent on.