Esmar Tuek was a spice smuggler during the time of Muad'Dib. Tuek's operation was based in the polar regions of Arrakis. For many years he was responsible for smuggling spice off Arrakis for profit. A cunning and astute businessman, Tuek had secret arrangements with the Fremen, both as a means of making profit and as a way of undermining the rule of the Harkonnens. Tuek's descendants seemed to have remained on Arrakis. A distant yet direct descendant, Hedley Tuek was High Priest of the Rakian Priesthood some 5000 years after the time of Esmar Tuek.