Philippe Chappuis (born December 15, 1967), better known by his pen name Zep, is a Francophone Swiss cartoonist and illustrator.

Philippe Chappuis was born on December 15, 1967, in the city of Onex on the outskirts of Geneva in Switzerland; he is the son of a policeman and a clothes designer.

[3] At first struggling to find publication, the series was initially published in the fanzine Sauve qui peut before it was noticed by Glénat executive Jean-Claude Camano.

It sold only a few thousand copies, but the following books have gradually won over a huge readership, outselling traditional French favorites such as Astérix and Lucky Luke.

In 1998, he was one of the founders of children's comic magazine Tchô!, featuring Titeuf as its mascot, and with Zep as the lead editor.

[10] Zep and Bruller also co-authored the children's book Les Minijusticiers which was adapted into an animated series.