Juan José Ryp began his career in the late 1990s as a contributor to the magazines of publisher MegaMultimedia. He made erotic comics for Wet Comix, terror stories like 'Nancy in Hell' for Trece, and created 'Bribones' for Barbarian. He published several stories in El Víbora, including the series 'El Diario de Karol' with Art Brooks. In 2002, he began a collaboration with Avatar Press in the USA. He has made several cover illustrations, as well as erotic stories with Treshold. He did art on the graphic novel 'Alan Moore's Another Suburban Romance' and illustrated the limited series 'Frank Miller's Robocop'.