It was at first drawn by Louis Salvérius who, upon his death, was replaced by Lambil, and has since become a major best-selling comic book series with more than 15 million albums sold.

Cauvin continued to work for the animation studio as well, writing the scripts for the Musti, Tip and Tap and The Pili's cartoons by Ray Goossens.

But with Agent 212 (French for "Officer 212"), featuring a rather stupid cop, he started to make his stories more contemporary, and in the 1980s he breached increasingly taboo subjects and introduced more critical views with themes like nursing and hospitals in Les Femmes en Blanc ("The Women in White") with Philippe Bercovici, Les Paparazzi or gravediggers in Pierre Tombal.

In fact, aside from Lambil (whose name is changed to "Lampil"), other characters, including their colleagues in the comic book industry, are referred to by their real or pen-names: Cauvin himself, Fournier, Franquin etc.

[1] Other more recent series include Cédric, a domestic strip surrounding a pre-adolescent schoolboy, and Les Psy ("The Shrinks") about a psychiatrist whose patients' eccentricities often lead him to question his own sanity.

In 2006 alone, he had six series in the list of best selling new comics of the ACBD, with Cédric securing the fourth spot with 288,900 albums and Les Tuniques Bleues at ten with 184,800 copies.