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 Adventures of Tintin: The Secret of the Unicorn (video game) which another man tries to purchase from him, but fails. The man who sold it to Tintin then brings him to a ship expert, who tells Tintin that the ship is a model of the "Unicorn", a galleon which belonged to Sir Francis Haddock. From a book given to him by the expert, Tintin learns that the ship (which was a part of Charles II's fleet) was on its way from Barbados to Europe when it was attacked by pirate Red Rackham. Rather than allow "The Unicorn" to be boarded, Sir Francis scuttled the ship and fled. Tintin takes the