André Beniest, better known as Benn, started his comics career while still studying fine arts in 1969. His first comic, the humorous series 'Petit-Beurre' was published in Junior/Ons Volkske. He continued with two mini-books for Spirou, followed by a couple of years drawing 'Les Schtroumpfs' at Studio Peyo. At the same time, Benn took on the humorous series 'Sam et Tibond', again in Junior/Ons Volkske. He also joined Tintin, where he did several short stories, as well as the series 'Tom Applepie' scripted by Vicq.
In 1978, Benn teamed up with scenarist Stephen Desberg to create the series about Scotisch detective 'Mic Mac Adam' in Spirou. In the 1980s he expanded his activities with 'Monsieur Cauchemar', a series of comic adaptations of detective novels by Pierre Siniac. This series appeared at Glénat, a publisher for which he also created 'Elmer et Moi'. In 1992, he started the series 'Woogee' at Dargaud. At the same publisher, he relaunched 'Mic Mac Adam' together with the scriptwriter Luc Brunschwig.