Overseer

The Overseer is a command role which has vast reaching control over criminality as well as managing peoples' threat levels. Much like the Captain, they are always a member of the crew (barring exceptions like the Sympathizer) and have a unique ID card which cannot be replicated.

In terms of hierarchy, the Overseer is not necessarily subservient to the Captain. Should they both be present, they can both equally bother and undermine each other. This introduces a bit of a equalizing force to command, since it creates a role which can challenge the Captain's general dominance and potentially take over critical duties.

I AM THE LAW!

The Overseer's main tool for managing criminality is the Threat Assessment Terminal located within their office. While the Overseer's specific ID is inside the console's primary slot, they can remotely set the threat level of anyone on the station. Note that to facilitate this, a spare Overseer ID card will spawn in their office in the event that the role is not assigned.

Compared to previous security implementations where all members of security can modify the status of a suspect, the Overseer being the single central control point of Criminality means that system is much more authoritative and reliable. Additionally, since the Overseer is more reliable than the average job on station, threat levels assigned by them are more consistently actionable.

I WRITE THE LAW!

In addition to the Threat Assessment Terminal, the Overseer also has access to the Station's Central Law Codex. This is a unique computer which is biometrically locked to the Overseer, preventing anyone but them from changing it.

This terminal gives a view of the various categories of contraband (knives, firearms, explosives, etc.) and allows their threat level to be set from 0 to 3. Setting these values will queue up a law update for the entire station and, after a moderate delay, announce to the crew the changes to the contraband laws. From that point on, crossing through scanners will use the new updated values for threat assignment.

Through this system, the Overseer is given a great amount of control to either greatly restrict the kinds of things entering secure areas or to significantly pave the way for traitors and other evildoers to bring dangerous materials across the station.