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
Tintin and the Golden Fleece be an old friend of Paparanic and offers to buy the boat for "sentimental" reasons, but the huge amounts that he offers makes Tintin suspicious and on his advice Haddock turns the offer down. During their stay in Istanbul, a stranger named Malik offers to take Tintin and Haddock on a guided tour during which there are two attempts on their lives. This makes them all the more determined to find out what is going on. One of the clauses of Paparanic's will was that Haddock, on accepting the ship, should also fulfill his current obligations. The next day Haddock