Tintin (character) with word balloons, in which he depicted a boy and a little white dog. Abbe Wallez thought that these characters could be developed further, and asked Hergé to use characters like these for an adventure that could be serialised in . Hergé agreed, creating "The Adventures of Tintin" as a result. Images of Tintin and Snowy first appeared in the youth supplement on 4 January 1929, in an advert for the upcoming series. However, Hergé would later insist that Tintin would only be "born" on 10 January 1929, when "Tintin in the Land of the Soviets" began to be serialised
Tintin and the Picaros on the inclusion of the CND peace symbol, Hergé stated that for Tintin, "That's normal. Tintin is a pacifist, he was always anti-war." Hergé also changed the behaviour of several characters in the story, for instance by depicting Tintin practising yoga and Nestor the butler both eavesdropping and drinking Haddock's whisky. Another new development that Hergé added to the story was Haddock's first name, Archibald. Hergé's depiction of the San Theodoran carnival was drawn largely from images of the Nice Carnival. Among the revelers, he included those dressed in the costumes of various different cartoon and film characters, such as