Jean-Louis Marco was born in Marseille. He studied to become a graphical designer at the Art Academy near Bordeaux. He founded the fanzine Anus Horibilus along with the famous comics artist Fred and fellow newcomer Loran. He also drew for the fanzines Good Stuff and Indus Valley. While working as a designer, he started his pirate comic 'Rosco Le Rouge' for the magazine Tschô.