Captain Haddock the Picaros", when Professor Calculus 'cures' him of his taste for alcohol. In the adventure "Secret of the Unicorn" (and continuing in "Red Rackham's Treasure") he and Tintin travel to find a pirate's treasure captured by his ancestor, Sir Francis Haddock (François de Hadoque in French). With newfound wealth and regaining his ancestral home Marlinspike Hall, Captain Haddock becomes a socialite; riding a horse, wearing a monocle, and sitting in a theatre box seat ("The Seven Crystal Balls"). He then evolves to become genuinely heroic, volunteering to sacrifice his life to save Tintin's own in the pivotal "Tintin in Tibet".
Tintin (character) the firing squad (in "The Broken Ear") or too angry when informing Captain Haddock that he nearly cost them their lives (in "Explorers on the Moon"). However, as Michael Farr observed, Tintin has "tremendous spirit" and, in "Tintin in Tibet", was appropriately given the name Great Heart. By turns, Tintin is innocent, politically crusading, escapist, and finally cynical. If he had perhaps too much of the goody-goody about him, at least he was not priggish; Hergé admitting as much, saying, "If Tintin is a moralist, he's a moralist who doesn't take things too seriously, so humour is never far away