Captain Haddock with his characteristic temper somewhat inspired by Tintin colourist E.P. Jacobs and his bluffness drawn from Tintin artist Bob de Moor. Harry Thompson has commented on how Hergé utilised the character to inject humour into the plot, notably "where Haddock plays the fool to smooth over a lengthy explanation." Captain Haddock is especially notable in "The Red Sea Sharks", where his skillful captaining of the ship he and Tintin seize from Rastapopoulos allows them to survive until they are rescued, and is especially noble in the pivotal "Tintin in Tibet", volunteering to sacrifice his life to save Tintin's own. By
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".