José Antonio Calvo was born in the spring of 1963 in Madrid. He was an amateur artist in the 1980s. He collaborated with Santiago Segura on such an early project as the creation of fanzine Dogdai. Segura would become a very popular actor and film director in later years. In 1985 José Antonio Calvo won first prize in a contest for amateur artists held by the magazine Creepy. He also managed to publish some of his works in magazines like Madriz and Makoki. At any rate, the most successful stage of his career took place in the 1990s, while he and Santiago Segura were using the joint pseudonym Mónica & Bea to produce a series of highly sexed comics for Ediciones la Cúpula.