All across the Red Zone, 4 gangs were recognized as the crème de la crème of the Red Zone, they were known as the big 4 Gangs.
The Axe Gang, the Kong Gang, the Godzilla Gang, and the Exquisite Gang, these were the big 4 Gangs that were recognized as the undisputed deadliest.
Not only did these 4 gangs have armies consisting of more than a hundred thousand mystic warriors, they were more renowned for their leaders.
All the Gang leaders of these 4 gangs were rumored to be above the 5th tier of the Advanced mystic grade already. They were already qualified to upgrade their gangs to the Snake territory but they refused due to a simple reason.
Like most humans believed, it was better to be a tenant living than to be a landlord of the dead. The gang leaders used this same psychology.
In their perspective, it was better to be the Lords of the Red Zone than to upgrade to the Snake territory and start all over as the underdogs.