Count Hasimir Fenring (10133 AG - 10225 AG) was a renowned assassin and Mentat political tactician, and the adviser to Emperor Shaddam Corrino IV. He was also a prominent member of House Fenring, a House Minor that had long been aligned to House Corrino. Fenring was a genetic eunuch and a failed Kwisatz Haderach. He was married to the Bene Gesserit Lady Margot Fenring.
He was a small man with oversize dark eyes and a weasel face.
Hasimir Fenring was a small, short man with a weaselish, ferret-like face with overlarge dark eyes and gray at the temples.
Fenring was a part of the Bene Gesserit breeding program and was one of the Kwisatz Haderach candidates, but was crippled by his being a genetic eunuch. Fenring's talent concentrated into furtiveness and inner seclusion, and rendered him invisible to prescient vision, even to the prescience of someone as powerful as Paul Muad'Dib, the first Kwisatz Haderach.
After the ascent of Shaddam to the role of Padishah Emperor, Hasimir became his vital adviser, often guiding him away from foolish political decisions.
During the transition of power on Arrakis between House Harkonnen and House Atreides, Fenring served as interim Governor, no doubt finalizing some of the elements that would later be instrumental in the fall of House Atreides.
Between 10191 AG and 10193 AG he served as Siridar-Absentia of Caladan. Fenring tried to free Shaddam from the Landsraad's suspicions after the Arrakis Affair. It cost more than a billion solaris in spice bribes, slave women, royal honors, and tokens of rank.