Despite having large amounts of flora and audible forest creatures, East Vegetation 6 shows little sign of human or lycra population. The realm had 7 official residents at the time of Pink Guy's trip. None of these residents are known, however.
There is a large amount of infrastructure in the realm (or at least the section shown in "A WAR IS COMING..."), including a water pipe, sewer grate, a road, and several small buildings. This implies that there may have been, at one point, a significant population in the realm. In "A WAR IS COMING...", Green Cunt remarks upon seeing Pink Guy, "I thought this realm was abandoned! What are you do here?!" This statement implies that he has seen a significant enough section of the realm to assume its population.
Only three entities have been known to ever exist inside the realm: Pink Guy, Green Cunt, and Salamander Man. While Pink Guy is searching for Frank on his expedition, and Salamander Man comes to get the coordinates, it is unknown why Green Cunt is present in the realm. A known realm scavenger, it can be assumed that he is searching for something, but what exactly it is remains unknown.