Set during a largely realistic 20th century, the hero of the series is Tintin, a young Belgian reporter. He is aided in his adventures from the beginning by his faithful fox terrier dog Snowy (Milou in French). Later, popular additions to the cast included the brash, cynical and grumpy Captain Haddock, the highly intelligent but hearing-impaired Professor Calculus (Professeur Tournesol) and other supporting characters such as the incompetent detectives Thomson and Thompson (Dupont et Dupond). Though Tintin's adventures are formulaic - it presents a mystery which is then solved logically.