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) found is slightly different from his. On the way home, he is kidnapped and taken aboard the "Karaboudjan", a steam ship heading for Baghar, a city located in North Africa. Tintin escapes from his cell and meets Captain Haddock, the original captain of the ship, who has been imprisoned by Sakharine after he took over the ship and bribed Haddock's crew into working for him. Haddock helps Tintin and Snowy escape, but as they are at sea in a lifeboat, they are attacked by a seaplane sent by Sakharine. The attack fails and Tintin is able to damage the plane.