Hayt was given as a gift to Paul Atreides, though, was secretly a tool intended to kill Paul. Paul knew this, and accepted it regardless. Though a ghola, Hayt was trained as a mentat, and exercised those abilities a number of times. During his time on Arrakis, he developed a love for Paul Atreides' little sister, Alia; who was having an inner conflict with the genetic remnant of Baron Vladimir Harkonnen.
Idaho shed this name when his original memories were restored during a deadly encounter with Padishah Emperor Paul Atreides and the Tleilaxu face dancer Scytale, after the death of Paul's concubine Chani.