Imperial Grand Governor
A Grand Governor is the being in charge of an entire sector. The planetary governors of a sector are under the Grand Governor's control, and a Grand Governor reports to an Advisor, with duplicate reports being sent directly to the Emperor. A Grand Governor has command over a military Sector Group, and is responsible for the security of an entire sector.
Being responsible for dozens of systems, Grand Governors take a personal interest only in a handful of worlds. For the rest, they first rely upon communications with their subordinate governors, and then upon reports from intelligence units within their Sector Group. It is not unusual for a Grand Governor to also serve as a governor of a particularly favored world within his sector.