"Cigars of the Pharaoh" saw the introduction of several characters who would gain a recurring role in "The Adventures of Tintin". The most notable are the two detectives, who were initially called "Agent X33 and Agent X33 ". In his 1941 Tintin play co-written with Jacques Van Melkebeke, "", Hergé named them "Durant and Durand", although he later renamed them "Dupont and Dupond". The series' English-language translators, Michael Turner and Leslie Lonsdale-Cooper, renamed them "Thomson and Thompson." They were based on a combination of the stereotypical Belgian policeman of the 1930s with Hergé's observations of his father and uncle, Alexis and Léon Remi, who were identical twins.