Claude Lacroix made his first cartoons at age twenty. He later worked as draftsman and scenarist for magazines like Pieds Nickelés, Métal Hurlant and Pilote. From scenarios by Robert Génin, he made the series 'Yann le Migrateur', and under the pseudonym Tartempion, he created 'L'homme au chapeau mou'. He is also active as a journalist, and wrote the scenarios for François Bourgeon's science-fiction series 'Cyann'. He also works as an illustrator for Jeux et Statégie, Le Journal de Mickey, Le Point and Science et Vie.