Jesús Blasco Monterde began his career in 1935 in the Spanish version of the magazine Mickey. In the 1950s, working for several Spanish publications, he created the character Cuto. In the 1960s, working for the agency L'International, he created the Steel Claw, with story by Tom Tully, for the British magazine Valiant. In the 1970s he publishes several episodes of Paul Foran and 'Los Guerilleros' in Spirou, before working with Claude Moliterni in the adaptation of the Bible in comics, for the Dargaud publishing house. In 1987 he starts working with Sergio Bonelli, in Italy, in the series Tex Willer and Capitan Trueno, with the writer Victor Mora. Jésus Blasco's very productive and influential career ended with his death on October 21, 1995.