Moko began his career as a contributor to Le Journal de Mickey. He later made a lot of game pages and illustrations for Mickey Parade Giant, Science et Vie Découvertes and Bayard. With writer Toma, he is the creator of the riddle comic 'Mini'Olmes', whose murder mysteries appear on a weekly basis in Science et Vie Découvertes since 2008. A compilation book was published by Le Lombard in 2014.