The devanu have always trained and controlled creatures to do their will and the grishak have been used by devanu for many generations, even before the rise of the Empire. In those times many devanu masters selectively bred grishak to be bigger, nastier hunters who immediately obeyed their commands.
When the devanu were scattered those grishak bred with the wild beasts, dominating them and leaving pockets of these savage beasts that even now cause problem for the remote regions of the Empire.
The grishak live in small family groups, with several powerful kopa leading a group of sempa and younger jenta.
