Captain Haddock is
Tintin's faithful companion in his adventures throughout the world. We originally met him in the book
The Crab with the Golden Claws, where he was Captain of a freighter used for smuggling without his knowledge. Since then, he has come up in the world, using monies borrowed from
Professor Calculus and
Red Rackham's Treasure to purchase his ancestral homestead,
Marlinspike Hall, outside
London.
Captain Haddock's first name, apparently, is Archibald. His ancestor Sir Francis Haddock defeated the pirate Red Rackham in the Caribbean. The Captain (as he's known in the books) has a bit of an affinity for whisky, especially Loch Lomond. This can result in his being either unavailable or non compos mentis at critical moments, but he always manages to help bumble through in the end.