At the age of 18 he gets his first attempts published in the monthly SAMEDI-JEUNESSE. Two years later he is hired by Dino Attanasio to pencil his “Signor Spaghetti”.

The great turning point, however, comes in 1974 when he meets Peyo, who introduces him at SPIROU. A “Carte Blanche” marks his glorious debut with a memorial stone.

Guessing that his future is (as good as) cut out for him in the magazines of Marcinelle, he becomes the assistant of Francis (“La Ford T”) and wears out the doorstep of Raoul Cauvin, who writes his first gags of “L’Agent 212”, perhaps a bit thin in the beginning, but soon filling out.

While the Agent gains in weight and self-confidence, the artist gets married in 1978, and on his own, illustrates a series of half-plates called “Les Indésirables”, to fill the time until the first book with his preferred detective can be completed. He has everything ready in 1981, but the material for the whole first book is put on hold because the series has to start with a well-filled cop, to avoid that the readers, used to the opulent shape of the finest ornament of the station, will be disappointed. (Later on Kox will revise the most important first stories, giving his hero the required dimensions and outlines.)

Success is immediate, and the already overworked illustrator leaves his “Indésirables” to their own sad devices to concentrate entirely on his other series. He often has trouble completing one book a year, because in addition to drawing, he is crazy about cycling!

Though always faithful to his creation, Kox has a bit on the side only once in the early 90s, when he illustrates several “Chansons cochonnes” for Éditions Top Game of his friend Louis-Michel Carpentier.