Martens studied in Düsseldorf at the Academy of Fine Arts and at the St. Luc comics school in Belgium, assisting Eddy Paape on Udolfo, before relocating to France.

He made his debut in the magazines (À suivre), Le Journal de Tintin and Heavy Metal.

In 2001 he won de Prix Bonnet d’âne[1] at the comic festival Quai des Bulles in Saint-Malo (France) for his entire oeuvre.

His genre series include Arq, Cromwell Stone, Cyrrus, Rork and its spin-off, Capricorne, as well as a number of single works such as La Caverne du Souvenir (The Cave of Memory), Coutoo, Dérives (Adrift), Aztèques, and Révélations Posthumes (Posthumous Revelations).

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