El asunto Tornasol
Hergé incorporated many characters from previous "Adventures" into "Tintin and the Picaros"; these include Pablo, Ridgewell, and the Arumbaya tribe from "The Broken Ear", as well as Colonel Sponz from "The Calculus Affair". The character of General Tapioca, who had been mentioned in previous "Adventures" but never depicted, was also introduced.