Born in Mexico City, Sealtiel Alatriste Batalla began his comics career at the age of 20. In 1941, he was assigned by the Chamaco newspaper to draw the series 'Detectives y Bandidos'. In the sixteen years that followed, he drew several stories, including 'Lágrimas de Mujer', 'Majestad Negra', 'El Caid', and 'Requiero'. In addition, he began the review 'Rex, el Hombre del Bronce'.
From 1959, he drew for Yamba, El Gavilán, El Hombre Mosca, Aventuras de Viruta, Capulina and Confesiones Sentimentales. Among his most notable characters was 'Johnny Galaxie'. He was the first Mexican artist to draw 'Tarzan' and western comics for the US market. He conceived a Sunday supplement for the daily Heraldo de Mexico, and illustrated several chapters of 'Mexico, Historia de un Pueblo'.