The Butlerian Jihad (Legends of Dune, #1)

by Brian Herbert

Victorious, they called themselves Titans, after the most ancient of Greek gods. Led by the visionary Tlaloc, the twenty allocated the administration of planets and peoples among themselves, enforcing their edicts through Barbarossa’s aggressive thinking machines. They conquered most of the known galaxy.

I love warhammer 40k

On the Unallied Planet of Tlulax in the distant Thalim solar system, his people ran organ farms, growing human hearts, lungs, kidneys, and other body parts from viable cells.

Kinda fucked! I love it.