Attack on Satan (Path of the Righteous)
Khorramzadeh the Storm King
Balor Lord of Iz
He is known as the Storm King, as his form is bathed in lightning rather than the fire usual to balors.
He is one of the two most powerful of the Worldwound’s many warlords—the other is the marilith Zuhra Aponavicius. He led the initial attack agains the Kenebres and slew the Silver dragon guardian.