In 's Dune series, a "Ghola" is a deceased person who has been brought back to life, via a secret, almost illegal Tleilaxu technology. Traditionally, the "Ghola" is stripped of memories from his or her past life and taught new skills. "Ghola" are often sold to nobles by the Tleilaxu as servants and retainers. Given their highly superstitious nature, Fremen are distrustful of ghola, despite the potential usefulness of the living dead. The ambiguity as to whether or not latent memories of the "old self" are still present in the ghola's mind is a long-drawn debate throughout the story. It has been suggested that the term "ghola" originates in Arabic, as do other terms in the Dune series.