Catherine Muler, also known as Catel, studied at the School of Plastic Arts in Strasbourg, where she graduated in 1990. She specialized in illustrations for children, and has cooperated with the publishers Nathan, Epigones and Hachette. In 1996, she made her first stories with the characters 'Bop et Blop' in cooperation with Paul Martin for the monthly Images Doc, published by Bayard Presse.
