The Ruthless Seven

The ruthless seven are a cabal of archdemons who follow orders of Zathroth. Even the Demon Overlords obey their wishes.

Each one of the Ruthless Seven represents a hell circle. Each one bears a kind of disfortune that might happen. Fire, despair, plague, damnation, destruction, deceit and undeath.

Within the Tibian history, the Ruthless Seven learned the forgotten art of dreamwalking and dominated all the pivotal points of meeting for the Nightmare Knights, thus cutting them off from each other. That almost annihilated the ancient knightly order. Before they were wiped out, they created a maze underneath the Plains of Havoc, inside the very inferno pits, where they had built an outpost. In this maze, there is a throne room for each one of the Ruthless Seven, each one having a small essence of these wicked demons.

They are:

Apocalypse, Total Destruction
Ashfalor, general of the undead hordes, and right hand of Urgith. Was "shredded to pieces" in the battle that led to the destruction of Roshamuul
Bazir, the Great Deceiver, Lord of the Lies
Infernatil, the Incendiary of Hell
Pumin, the Lord of Despair
Tafariel, the Mistress of the Damned
Verminor, the Plaguelord