Imperatrix

The power to command a group of Martians is invested in an Imperatrix, whose word is absolute. The Imperatrix is neither elected (they have no formal concept of democracy) nor inherited. One simply declares themselves Imperatrix, and if the goddess means it to be, they are. If the goddess doesn't mean for it to be, they're not, or soon will not be. The seizure of power is thus legitimized, or illegitimated, retroactively. However, an Imperatrix that does not have the support of those she commands is likely to find herself usurped, replaced, or worse.

Imperatrixes of Earth Colony
Garaka

Quasha

Nerrine

Other
High Imperatrix