A YJA Moment - Lanterns and the Law

The biggest and longest-serving group of interplanetary law enforcement officers is the Green Lantern Corps.  Founded many millennia ago by the Guardians of Oa, the Corp replaced the Guardian's original police force, after the Manhunters went rogue and obliterated a trillion souls in the Lost Sector. Using the Power Rings forged by Krona, the Green Lanterns have been the greatest source for peace and order in the universe.

While the Guardians of Oa gave the Corps a mandate to dispense justice, their reach and authority are not absolute.  No political entity is required to allow a Green Lantern to operate in its jurisdiction, so Corp members must remember to adhere to the wishes of the authorities when conducting investigations.

In the days of the Old Republic, the Galactic Senate had granted the Green Lanterns unprecedented access to its member worlds and often worked in conjunction with the Jedi Order and the Grand Army of the Republic. This precedent and their succeeding good reputation have allowed the Lanterns to operate in the majority of sectors within Known Space.

Yet there are still areas that the Corps are not allowed access, whether by treaty or threat of violence. The Guardians of Oa signed agreements with the Vine and the Reach, agreeing never to enter their spheres of influence.  Autocratic species such as the Klingons, the Kree, and the Romulans are openly antagonistic to the Lanterns' presence, so most Corps members give them wide berths.

Within the Nova Empire, law enforcement is conducted by the Nova Corps. When the Green Lantern Corp was decimated by Parallax, galactic order was maintained in the Nova Empire through the Darkstars, the armored agents utilized by the Controllers.  After the Darkstars returned to Maltus after the return of the Lanterns, Xandar created a corp using technology reversed-engineered from the Darkstars technology and created the Nova Corps.  Though the two Corps sometimes work together, the Green Lanterns are officially excluded from Empire space.

Likewise, the Imperial Guard of the Shi'ar was also was born in the era of the Darkstars.  Not trusting the Controllers, the Magestrix instead uttered a decree that all metahumans from every world within the Protectorate would be required to serve in what is known today as the Imperial Guard.  An ever-changing force, their exploits have made them cultural icons within Shi'ar space and even in adjacent worlds.  They are led by Kallark the Gladiator, a Strontian warrior whose power rivals that of Superman.