Labyrinth
The Labyrinth does not exist. It is swamp gas and weather balloons.
Where Is This Place That Does Not Exist?
Well, the labyrinth (THE ONE THAT DOES NOT EXIST) is located inside one of the apartment buildings located deep within Necropolis' Heart, past hordes of unworldly Nullianacs and their enthralled servants/companions.
What Is Inside This Place That Does Not Exist?
There are several dangers inside of the clearly nonexistent Labyrinth, including but not limited to seekers, complete darkness and a labyrinthian design. WHO WOULD HAVE THOUGHT?
Seekers
Seekers, or hunters, are the residual spirits of players that have abyssed that rise from the darkness to kill trespassers. They all vary in toughness, armor, and weaponry, making them some of the most dangerous enemies in the MOO, since when a player jumps into the Abyss (the one that doesnt exist, mind) they retain all of their items, status buffs/debuffs and skills.
The Abyss
The abyss, which, again, does not and never will exist, is an ethereal plane of darkness where the souls of all good dogs go, as well as people who jump into it like morons.
The aforementioned morons will get their own plaque commemorating them in Freedom City's Memorial Park.