In 1969, Cauvin and Salve created "The Bluecoats," Cauvin's first successful series. He excelled in humorous adventures for all ages and with all kinds of visual gags. He exercised his gift by writing around 15 albums a year for parallel series with guaranteed success. In 1972, following the premature death of Salve, Cauvin asked Lambil, illustrator of Spirou magazine, to continue the series. From then on, Lambil dedicated himself to these heroes and drew 47 albums over 35 years.