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
Captain Haddock he has the sun-induced delusion that Tintin is a bottle of champagne. However, Haddock is a sincere figure in need of reform, and by the end of his first adventure Tintin has gained a loyal companion, albeit one still given to uttering the occasional "expletive". Hergé also allowed himself more artistic expression through Haddock's features than with Tintin's. Michael Farr, author of "Tintin: The Complete Companion", notes: "Whereas Hergé kept Tintin's facial expressions to a bare minimum, Haddock's could be contorted with emotion." Farr goes on to write that "In Haddock, Hergé had come up with his most inspired character