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 (film) give up, but is persuaded by Haddock to continue. With help from Thompson and Thomson, Tintin and Haddock track Sakharine down, who is revealed to be a descendant of Red Rackham. They head back to port and set up a trap, but Sakharine uses his pistol to resist arrest. When his men fail to save him, Sakharine challenges Haddock to a final showdown. Sakharine and Haddock's sword-duel with cranes and swords eventually results in Sakharine being defeated and pushed overboard by Haddock. Sakharine climbs ashore and is arrested by Thomson and Thompson. Guided by the three scrolls, which indicate the