In 1969, Cauvin wrote his first successful series, Les Tuniques Bleues (The Bluecoats) which sold over 15 million copies. He excels in humorous adventures for all ages and with all kinds of visual gags. He exercised his gift by writing around fifteen albums a year for parallel series with a guaranteed success. He met Laudec who worked on the Spirou magazine. The illustrator gave him a sketch of a boy. 20 years later, Laudec dedicated himself to Cedric who became a star amongst children and had 21 albums to his name.