Antonio Hernández Palacios studied at the School of Fine Arts of San Fernando and started his professional career designing film posters. This experience gave him a strong command of composition and a taste for grand, monumental imagery. During the 1940s and 1950s, he also experimented with comics, although most of his professional work at the time was in advertising, where he earned a solid reputation.

  By the late 1960s, disenchanted with the advertising world and inspired by the innovative European comics emerging from France and Belgium, Hernández Palacios returned to the medium with renewed passion. In 1970 he joined Trinca magazine, where he launched Manos Kelly, El Cid, and La paga del soldado. These works stood out for their powerful, detailed artwork and ambitious historical and adventure themes, establishing him as one of the leading Spanish comic artists of his generation.

  His growing fame led him to the French publisher Dargaud, for which he illustrated the acclaimed western series Mac Coy, producing 21 albums. In parallel, he worked on historically themed comics for the Basque publisher Ikusager, notably a series on the Spanish Civil War. For the same publisher he also drew the epic Roncesvalles, a superb historical fresco depicting the legendary defeat of Charlemagne’s army.

  In 1987, Palacios illustrated J.P Gourmelen's El libertador : vie et aventures de Simon Bolivar for Dargaud and in the 1990s, he contributed with three magnificent albums to the series "Relatos del Nuevo Mundo" published by Planeta de Agostini and Sociedad del Quinto Centenario.

  Hernández Palacios’s career combined visual splendor with a deep interest in Spain’s past, from medieval legends to 20th-century conflicts. Though many of his projects remained unfinished, his work left a lasting mark on European comics through its intensity, historical vision, and painterly beauty. his well-deserved fame earned him prestigious international awards and recognition: the Yellow Kid in Lucca (1974) and the international award for best illustrator from the French magazine Phenix both in 1979, to name but a few.