Feyd-Rautha Harkonnen is one of the antagonists of Dune. Feyd was the younger nephew of Baron Vladimir Harkonnen of House Harkonnen. He figured heavily in the Baron's plans to gain power. He was nominated by Baron Vladimir as the "Na-Baron" - heir to House Harkonnen.

The Baron favored the young Feyd-Rautha over Feyd's older brother "The Beast" Glossu Rabban, Count of Lankiveil. Feyd was both intelligent and charismatic, and was dedicated to the Harkonnen culture of sadism and cruelty, though potentially only due to his upbringing