The empire of Arqantay is one filled with many diverse cultures and sub-cultures, however, the state has mostly organized the various people's into groups of ethnicities. The ruling ethnicity is that of the Qari, and while there are many more, the Qari are the ones who receive the preference of the state, although, that is not to say that the rest of the ethnicities in the empire are marginalized, only the Tachi Surabhi are oppressed under the empire.
Qari: The original ethnicity of the Arqantay, the men and women of Qari display brownish skin colors and brown hairs, alongside natural yellow eyes said to have been given to them by the Inti himself. They make up for most of the population in the empire and also the most territory. They share common traits with the Ayachi, Muchi, Huanchi and Chachapochi.
Ayachi: The first group of people's that the Arqantay integrated that weren't part of their original etnicity, these people are well known for their metalworking and irrigation techniques, all of which were integrated into the Empire when they were conquered.
Muchi: Known warriors of the mountains, one of their nations once almost managed to defeat the Arqantay in open combat and bring about an end to the whole hegemony of Arqantay, but they were ultimately defeated by the Arqantay is a desperate last push. Since then, the Muchi have been integrated into the empire some of them still retaining their martial traditions in exchange of service within the military.
Chachapochi: Great architects in their own right, after all, they were the first to make use of terrace farming in the Taquan mountains. They are also known for the prowess of their bowmen, they were integrated into the empire after the defeat of the Muchi.
Huanchi: The most complex culture in the Taquan mountains previous to the rise of Arqantay, they have had a tradition of trading through land routes and have been the connection of the empire to the world at large. Most of the salt trade passes through their lands bringing wealth to their lands.
Chinchi: Desertmen, they were the first that the Arqantay recognized as being different mostly due to their skin color and more nomad traditions. Their tradition is that of horse riders, a tradition that they continue to practice and that has been of benefit to the empire.
Mayuchi: An advanced civilization more so than that of Arqantay previous to their conquest, their cities were filled with prosperity due to the delta river next to it, making the lands next to the river quite fertile. The Arqantay got steel techniques and more advanced mathematics from the Mayuchi.
Rupachi: White men of the mountains, considered barbarians both by the Mayuchi and the Arqantay, their ferocity was on par with that of the Machi, many of the Rupachi fled their lands when the Arqantay empire was victorious but those who stayed have had to endure a colonization process by the Qari of Arqantay.
Sachachi and Cucachi: Men of the jungles effective guerrilla fighters and tribal at most, the Arqantay had trouble at first conquering their vast regions, but they were victorious when they managed to exploit the rivalries between tribes. They have been slowly but surely civilized by the empire.