Frost Giants

Very little is known about the Frost Giants. Except that they live in the frozen tundra on the northern most point of Eraow, in a city colloquially known by the people of Mulgewind (and now all of Eraow) as "Frostchester Heights".
They were an all but undocumented race (except for vague legends) up until they made first contact with the famous monster hunter, Abduz Nurog, the Marble Man (who is believed to be half frost giant).
For reasons unknown, this great meeting caused the Frost Giants to attack the nearest city of man, Mulgewind City
They were pushed back by the combined forces of The Monster Defense League and the people of Muglewind. Inkidu ordered the men of Mulgewind to magically constructed a wall of fire on the boarder where the land conveniently turns to snow.
The Frost giants spent time making their city and their armies fire proof, so they could march back through the flame wall and attack all the cities of man. Unbeknownst to them The Dragon King from his perch on high, did not like the sight of the wall of flame, and snuffed it out.
Marble Man, The Monster Defense League and many armies of man decided to stop the Frost Giants once and for all. With the flame wall gone, their only hope was to take the fight to Frochester Heights. In the great battle of Frostchester Heights, Marble Man was split open, unleashing an elemental explosion of ice. When the dust cleared, a miles long wall jutted out in two directions, with the frozen corpse of Marble Man at the point.
The Frost Giants have stayed on their side of the wall ever since.