The Secret of the Unicorn Rackham's looks and costumes were also inspired by the character, Lerouge, who appears in C. S. Forester's novel, "The Captain from Connecticut", and by the 17th-century French buccaneer Daniel Montbars. The name of Marlinspike Hall— in French—was based upon the name of the real Belgian town, Sart-Moulin. The actual design of the building was based upon the Château de Cheverny, albeit with the two outer wings removed. In introducing Francis Haddock to the story, Hergé made Captain Haddock the only character in the series (except Jolyon Wagg, introduced later) to have a family and an ancestry. "The Secret of the
Snowy (character) of Captain Haddock in "The Crab with the Golden Claws". Before Haddock's appearance, Snowy was the source of dry and cynical side-commentary, which balanced out Tintin's constantly positive, optimistic perspective. When Haddock entered the series, the Captain took over the role of the cynic, and Snowy gradually shifted into a more light-hearted role, having dialog only with Tintin. Snowy is portrayed as brave and is often fearless against much larger creatures when Tintin is threatened. He repeatedly frees Tintin from captivity and saves him from dangerous situations, and will sometimes identify a villain before Tintin. His only fear is arachnophobia.