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) Tintin and Haddock hold the pilot captive and fly away, but crash-land in the desert after the plane is struck by lightning. As they travel through the desert, Haddock tells Tintin about his ancestor Sir Francis Haddock, who was the captain of the "Unicorn", a galleon that was attacked by Red Rackham, who wanted Haddock's treasure. Rather than allow the ship to be boarded, Haddock decided to scuttle it and escape in a life-boat. Tintin and Haddock eventually fall unconscious in the desert. Tintin wakes up to find himself in Fort Salaad, an outpost a few days away from Baghar.