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 Temple of the Sun to rescue some archaeologists from an old Inca curse. Many scenes from the source books are deleted; in fact the whole of "The Seven Crystal Balls" is condensed into fifteen minutes of film. Events were changed and some are added. For example, the Prince of the Sun's daughter is introduced, who tries to beg her father to spare the prisoners (and likes Zorrino). Also, Thomson and Thompson accompany Tintin and Captain Haddock on their quest to rescue Professor Calculus, whereas in the books their only role is attempting to use dowsing in order to find Tintin and his friends (and