Skorpio #20 was published by Ediciones Record on May 1, 1976, as part of a series that began in 1974. Boni and Héctor Germán Oesterheld write, and art comes from Arturo Del Castillo, Beto Formento and Horacio Lalia. It features Zero Galván, Nekrodamus, Hor El Temerario, Yor and Loco Sexton.