Nice-born Joann Sfar studied painting before enrolling at the Parisian School of Fine Arts in the Morphology section. He made his debut in 1994 when the publishing house Cornélius published his first book, 'Les Aventures d'Ossour Hyrsidoux'.
He then became one of the regular artists of the renewing publishing house L'Association, and published his comics on a regular base in the movement's review Lapin, and in its Patte de Mouche collection.
With Lewis Trondheim, he launched the 'Donjon' saga in 1998, which became a hype in the comics world. This series, about a fictive kingdom, has been added up with several sub-series. While Sfar and Trondheim do both scenario and the artwork on the main series, several befriended artists were assigned to draw the spin-offs. Christophe Blain did the 'Donjon Potron-Minet' series, situated 100 years before the main title, that is now called 'Donjon Zénith'. The 'Donjon Crépuscule' series was situated in the future, and drawn by Sfar.