Enrique Badia Romero launched the magazine Alex in 1953, after some earlier comic work in Barcelona publications like El Coyote and Hazañas del Oeste. Two years later, he started working for publishing house Ruiz Romero, for which he illustrated collections of trading cards like 'Hombres de Lucha' and 'Historia de la Guerra'. He also worked with his brother Jorge Badía Romero on the six issue collection 'Kit Carson' for Cliper, which they used to sign Hnos. Badía (Badía Bros). Later on, E. Badia Romero started contributing to the English publisher Fleetway, where he worked on the series 'Cathy and Wendy', 'Isometrics' and 'Cassius Clay'.
In 1970, he took over the famous espionage series 'Modesty Blaise' from Jim Holdaway. He continued the strip until 1978. Starting in 1976, he was also present in the French market with some episodes of Chéret's 'Rahan' in Pif Gadget. In 1978, Romero teamed up with Avenell to create the science-fiction series 'Axa', which appeared in The Sun. In 1987, he returned on the 'Modesty Blaise' strip again until the late 1990s.