Mauro Entrialgo was born in Vitoria-Gasteiz, Spain in 1965. He began his career in 1980 in Punkomix. Throughout the 1980s, his work appeared in Makoki, Octopus, and El Diario Vasco ('Armand Vanguardia'). For El Vibora, starting in 1987, he made series like 'La Escalera', 'El Demonio Rojo', 'Drugos el Acumulador', 'Comprobando la Realidad' (with artwork by Javi Rodriguez) and several independent pages.
