Beyond the borders of the Matoran island there exist many more islands and continents. In a time long ago, the great god emperor, Mata Nui, rules these lands with an iron fist. Having taken away most of the inhabitants free will, and built a system that made sure that order was kept. Mata Nui later had three sons, Ekimu, Makuta and Karzahni and for each one of them, he gave them a special gift. For Ekimu it was creation, for Makuta; control and for Karzahni the ability to see into the future. However, none of Ekimu's creations were able to exist for long periods of time; Makuta could only control that which had no will to begin with, and Karzahni could just see the futures he wanted to see, but which could never happen.
Because of this, the three brothers decided to take the gifts they deserved from their father, and thus at the fateful day, put him in an eternal sleep. After they had taken enough power away from Mata Nui to improve upon their original gifts, they then left his body and the empire he had made to experiment with their new abilities.
But while the brothers traveled away, and with Mata Nui no longer around to rule over them, the empire fell into anarchy, with many factions forming to take over in the chaos, this sparked a great war that devastated many of the islands and killed billions of people. The battle continues to this day, but with the factions having now united into several realms. One of these is lead by the Barraki, six powerful warlords.
art by @Oomatu
The Barraki are the descendants of six faction generals from the war and rules the Mahri Empire. Their sworn enemy is Queen Roodaka, ruler of the Vortixx Kingdom.