Michel Constant took courses in comics at the Saint-Luc Institute in Liège. He then teamed up with scenarist Denis Lapière with whom he created the 'Mauro Caldi' series at Miroir publishers. The series was later continued at Alpen publishers. At the same time, Constant and Lapière created two short stories for Tintin Reporter. From 1995, Constant drew 'Bitume', a collection of independent stories written by Michel Vandam. Early in his career, Michel Constant was inspired by the "School of Marcinelle" (Jijé, Tillieux), but along the way, he took on a caricatural realism, which reminds of the work of Charles Burns. In 2002, he began the series 'Red River Hôtel' with scripts by Jean-Luc Cornette in the collection Bulle Noire of the publishing house Glénat.