WikiPolice
A WikiPolice troper is an unofficial enforcer of policy on All The Tropes. They are often well versed in the rules and will do their best to make sure they are followed and will report offenders to their nominal superiors.
They are not above the WikiLaw, so if they wind up abusing their unofficial positions, they to will have to face WikiJustice like anyone else.
Regardless, these WikiFauna are usually above such corruption and enforce the law to make sure the peace of the community is not disturbed, and they are highly valued for their voluntary service.