Sanjulián started drawing in 1970 with Frazetta in the American magazine company Warren Publishing. Their Vampirella and Conan covers gained recognition at an international level.He has worked for all of the important New York publishers: Avon, Warner, Bantam, Signet and many more.Although naturally his most fervent admirers are Americans, followers throughout the world collect his reproductions. Collectors of comic book characters (Batman, Red Sonja, Vampirella) or even famous actors request drawings from Sanjulián, in the style of oil painting or pencil drawings.