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) majority of the game, although in some sections, Snowy can be controlled, and in the final battle, the player controls Captain Haddock. Snowy has the ability to follow Tintin's scent, as well as the scent of other humans and creatures, and can also scare harmful creatures away with a bark. Tintin can punch enemies and climb ladders. Whereas Tintin can only attack using punches, Haddock can also use a sword to fight. The game also includes an offline co-op mode set in Captain Haddock's nightmares, where Tintin, Haddock and Bianca Castafiore (each controlled by a different player, or by the