Enrique Nieto was affiliated to the Latin-American Union Studios between 1974 and 1978. He drew stories for many of Charlton's 1970s horror titles, such as Beyong the Grave, Creepy Things, Fightin' Marines, Ghost Manor, Ghostly Haunts, Ghostly Tales, Haunted, Many Ghosts of Doctor Graves, Monster Hunters and Scary Tales. He also drew for romance and war titles. He used several pen names, such as Joe Nieto or Fred Nieto.