Cocytus, created by Takemikazuchi, served as the guardian of the fifth floor. Together with Nigredo, guardian of Ice Prison, there were two level-100 NPCs.
The sixth floor had Aura Bella Fiora and Mare Bello Fiore, two level-100 guardians created by Bukubukuchagama, along with Voracious Fox Insect King, the area guardian of Insect Poison Great Hole.
The seventh floor was guarded by Felicity, created by Mu Fengyu, along with various Traptrix NPCs. There were three level-100 NPCs in total, while the rest were level-80 NPCs. This floor was absolutely secure.
The eighth floor was still guarded by Golden Lord, an NPC created by Mu Fengyu. Other than the automatically generated golden undead, there was only this one guardian—not because the place did not require more guards.
It was simply because the undead generated here were all monsters above LV60. In addition, this place was filled with gold coin items, most of which could be taken away. If one was not careful, they could be ambushed by undead lurking beneath the gold coins.
Of course, the most important items were hidden within Golden Lord's residence. To obtain them, one had to defeat Golden Lord and find Golden Island on the eighth floor.
To improve this floor's security level, Mu Fengyu had equipped Golden Lord with a full set of divine artifacts, along with all sorts of stat bonuses.
The ninth floor was guarded by Demiurge, created by Ulbert, along with Guren, a level-80 area guardian, and three demons—the supposed Seven Deadly Sins that had somehow ended up with only three members.
The tenth floor was guarded by Victim, created by Flatfoot and jokingly called the flying kidney by everyone, along with Aureole Omega, the level-100 NPC guardian of Cherry Blossom Sanctuary.
The eleventh floor was guarded by Sebas Tian, created by Touch