Olivier Longe, who signs his work Olis, began his career working for Spirou magazine in 1988. He made several drawings for editional sections, as well as the 'Faits Divers' strips by Toldac and some short stories. In 1991, he started the gag series 'Garage Isidore' with François Gilson. This comic gag-strip about a garage-keeper has been collected in several books by Dupuis since 1995. Despite the popularity of the series, Olis handed over the artwork Stédo to focus on his own projects in 2002.
