The Adventures of Tintin depicted as a weak and alcoholic character, but later evolves to become genuinely heroic and even a socialite after he finds a treasure from his ancestor, Sir Francis Haddock (Chevalier François de Hadoque in the original version). The Captain's coarse humanity and sarcasm act as a counterpoint to Tintin's often-implausible heroism; he is always quick with a dry comment whenever the boy reporter seems too idealistic. After he and Tintin find Red Rackham's treasure, Captain Haddock lives in the luxurious mansion Marlinspike Hall (Le château de Moulinsart in the original French). The hot-tempered Haddock uses a range of colourful insults
Captain Haddock the time of their last completed and published adventure, "Tintin and the Picaros", Haddock had become such an important figure that he dominates much of the story. Captain (Archibald) Haddock's ancestor, Sir Francis Haddock, is hinted at being the illegitimate son of the French Sun King (Louis XIV), a possible reference to Hergé's own family history— Hergé liked to believe that his father was the illegitimate son of the Belgian king Leopold II. As Hergé was considering names for his new character, he asked his wife, Germaine, what she had cooked for dinner. She told him, “a sad English fish—haddock.”