Twisted Colossi of the Orrish are enslaved by the Orrish to sometimes provide cloud cover from the Sun bane. Through corrupted elemental magics, captured Stone Giants of the Steel Realms , and Orrish breeding and unholy sacrifices by priests of Sun Stealer, there are more of the Twisted Colossi (formorians, formori) than there should be in the Dark Lands.
Part of the Bestiary of the Steel Realms
These creatures are bound strongly to earth and water, and are known to be able to control or influence weather on locales where they are. They have been known to bring forth the remains of those destroyed in elemental/natural disasters.
They are loners and difficult to control. They are perpetually in pain, and angry, and when they focus their anger, the violence of the environment and their physical wrath is terrifying.
Powerful places with natural anima founts are places that soothe their eternal agony of existence.