Fierro Extra #4 was published by Ediciones De La Urraca S.A. on January 1, 1987, as part of a series that began in 1986. Alejandro Daniel Pose and Carlos Albiac write, and art comes from Alfredo Flores, Daniel Rabanal and Enrique Breccia. It features Mickey Mouse, Goofy, Corto Maltese, Captain Rasputin and Evaristo.