Glossu "Beast" Rabban Harkonnen is the violent and brutish older nephew of Baron Harkonnen. He is as cruel and sadistic as his uncle, but lacks the Baron's intelligence. The Baron tasks Rabban to rule the planet Arrakis for a time in the most brutal way possible, so that when his favored nephew Feyd-Rautha takes over, Feyd will be welcomed as a hero by the populace.
Glossu "Beast" Rabban Harkonnen is the violent and brutish older nephew of Baron Harkonnen. He is as cruel and sadistic as his uncle, but lacks the Baron's intelligence. The Baron tasks Rabban to rule the planet Arrakis for a time in the most brutal way possible, so that when his favored nephew Feyd-Rautha takes over Feyd will be welcomed as a hero by the populace.