Maëster, pseudonym of Jean-Marie Ballester, started making short stories for Fluide Glacial in 1982. He became one of the magazine's regular contributors, with series like 'Soeur Marie-Thérèse des Batignolles' and 'Athagor Wurlitzer'. Maëster's style is influenced by Gotlib, from whom he took over the character 'L'inspecteur Charolles'. In addition to his work for Fluide Glacial, Maëster has published the small comic book 'Raven' with Stakkano publishers. Besides comics, Maëster does illustrations for the magazines Lui, l'Hebdogiciel and l'Intox.