The Sith Empire was wiped out not just by the Republic and Jedi but also by their own rivalry and petty power plays.

But a small splinter fleet broke away from the greater galaxy and remained hidden on a hidden planet called Feuer, a mineral-rich wasteland with few patches of usable land and water sources. Here, Sith culture continued uninterrupted for two hundred years.

But the newest Dark Lady, Darth Pahara, had sent forth a new decree to boost the population after a rather costly civil war by allowing any member of a higher caste to select any of a caste lower than them to keep as a consort. And that any non-Sith captured during an off-world raid is to be assigned to one of the existing castes depending on their Force capabilities.

Demonio is a Massassi warrior woman, larger and stronger in physical form, but weak in the Force. The strongest of the Sith warrior caste, she has spent her entire career smacking down underlings, keeping slaves in line, and guarding what was most precious to her masters. ((Sorry, this was the best pick I could find that wouldn't get rejected.))

Lower Casts

Grotthu Slave

High Casts

Zuguruk Engineer

Kissai Sorcerer Priest

Jen'Jedai Dark Lady