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 in Tibet crash in the Gosain Than Massif in the Himalayas of Tibet. He then has a vision of his friend Chang Chong-Chen, badly injured and calling for help from the wreckage of the crashed plane. Convinced of Chang's survival, Tintin flies to Kathmandu, via Delhi, with Snowy and a skeptical Captain Haddock. They hire a Sherpa named Tharkey and, accompanied by porters, travel overland from Nepal towards the crash site. The porters abandon the group in fear when mysterious tracks are found, while Tintin, Haddock and Tharkey go on and eventually reach the crash site. Tintin sets off with Snowy to