Professor Calculus

Wikipedia - "Professor Cuthbert Calculus (French: Professeur Tryphon Tournesol meaning 'Professor Tryphon Sunflower'), is a fictional character in The Adventures of Tintin, the comics series by Belgian cartoonist Hergé. He is Tintin's friend, an absent-minded professor and half-deaf physicist, who invents many sophisticated devices used in the series, such as a one-person shark-shaped submarine, the Moon rocket, and an ultrasound weapon. Calculus's deafness is a frequent source of humour, as he repeats back what he thinks he has heard, usually in the most unlikely words possible. He does not admit to being near-deaf and insists he is only a little hard of hearing in one ear.
Calculus first appeared in Red Rackham's Treasure, and was the result of Hergé's long quest to find the archetypal mad scientist or absent-minded professor. Although Hergé had included characters with similar traits in earlier stories, Calculus developed into a much more complex figure as the series progressed. ..."
Wikipedia
Cuthbert Calculus
Professor Calculus' Inventions

2008 May: Georges Remi, 1907-1983, 2010 July: The Adventures of Tintin: Breaking Free, 2011 December: Prisoners of the Sun, 2012 January: Tintin: the Complete Companion, 2012 December: Snowy, 2015 August: The Black Island (1937), 2015 September: King Ottokar's Sceptre (1938), 2015 December: Red Rackham's Treasure (1943), 2016 July: Captain Haddock, 2017 April: Cigars of the Pharaoh (1934), 2018 March: Destination Moon (1950), Explorers on the Moon (1954), 2018 July: The Calculus Affair (1956)