The Adventures of Tintin partially deaf physicist and a regular character alongside Tintin, Snowy, and Captain Haddock. He was introduced in "Red Rackham's Treasure", and based partially on Auguste Piccard, a Swiss physicist. The leading characters do not initially welcome his presence, but through his generous nature and his scientific ability, he develops a lasting bond with them. Eventually, by the end of "Land of Black Gold", he becomes a resident of Marlinspike Hall. Normally mild-mannered and dignified, Calculus occasionally loses his temper and acts in a spectacularly aggressive manner in response to actual or perceived insults, such as when Captain Haddock belittles his
The Secret of the Unicorn brothers joined. Three "Unicorns" in company sailing in the noonday sunne will speak. For 'tis from the light that light will dawn, and then shines forth the Eagle's cross". Upon hearing of the riddle, Captain Haddock explains that the "Unicorn" was a 17th-century warship captained by his ancestor, Sir Francis Haddock, but seized by a pirate band led by Red Rackham. Alone of his crew to survive the capture, Sir Francis killed Rackham in single combat and scuttled the "Unicorn"; but later built three models, which he left to his sons. Meanwhile, Barnaby requests a meeting with Tintin, but is