Guillermo Sánchez Boix, who signed his most popular work with Boixcar, is considered one of the grandmasters of Spanish comics. He started his career in the mid-1940s and among his first comics are 'El Caballero Negro', 'El Puma' and 'La Vuelta al Mundo de dos Muchachos'. He became very popular through the 'Hazañas Bélicas' series, that was launched in 1948.
