Born in San Sebastian, Santiago Valenzuela studied at the Faculty of Fine Arts in Madrid during the early 1990s. Together with other artists and writers from the Faculty, he founded the comics review Jarabe in 1993, which lasted for three years. From 1996, he cooperated with the literary magazine El Regreso de los Ultramarinos (12 issues). He has done illustration work for several media. He has published several books with Edicions De Ponent, all in the series 'Las Aventuras del Capitán Torrezno'.