The Keeper

The Keeper is a being in Terry Goodkind's Sword of Truth series, very much like the devil. The Keeper's "opposite" is The Creator.

The Keeper is almost universally believed in, and feared by almost all those who do. Any who believe in The Creator also believe in The Keeper. He serves as the consumer of life; all things that die must enter the underworld, into his realm. He is said to hate all living things, simply because they are alive, and would stop at nothing to break free from the underworld, and kill every living being in existence, and then torture them for eternity.

The Keeper's agents, such as the Sisters of the Dark, as well as dark wizards who wish to control a power they were not born with, are incredibly powerful and dangerous, due to the pact they have made with him.