During the wars with the devils and demons there was an empire of Aremony who called themselves the Orcrish’a Paderiki lived in the northern end of the continent now called Vivaldar. The Orcrish were being pushed back from the center of of the continent. They and their larger ilk (e.g. Bugbears, Hob-goblins) as well as the enslaved Trolls and other older races of Avergene were being slaughtered by devils and demons.
The Orcrish were a proud and powerful empire but in the end they were reduced to brutal warfare with the endless enemy. In the final days of the empire the Orcrish took about a mass transformation of their people. Their goal being to transform themselves into a stronger, faster, and more brutal folk. Their mission was one of utter survival.
Their transformation created the race of Orcs. Their new bodies were stronger and faster but given over to the struggle of might instead of the pursuit of intellect they gave up much of their society and tenderness.
Now thousands of years later the Orcs still survive in the northern lands of Vivaldar and in some other remote places. Known for the casual brutality and their quick rise to anger they are left mostly to themselves.
In some histories there is talk about tribal leaders organizing the Orc warlords into organized armies who went about invading the homes of others by land or sea. Now, In the modern Vivaldar the orcish tribes find themselves content to live between the northern shore of Vivaldar and the Great Vivaldarian Wilderness.
It has been heard of that Orcs will breed with the races of man or Elf. The later more common than the former as the Wild Elves can often find themselves more closely attuned to wild animals than they are to man kind. This leads them into mixed breading with more primitive races.