Governor

Governor is a position that can be held by a human. The Governor is essentially the leader of a part of a planet, or on Harvest, in districts or states.

The only known human governors are Nils Thune of the planet Harvest, and Jacob Jiles the leader of the rebel base at Eridanus Secundus.

Presumably, the leader of a group such as the Governors of Contrition would also be known as "governor".