sentence: The first El Gato Negro was Agustin Guerrero, a former luchador from South Texas who decided to use his skills to fight crime during the early '50s and late '60s.
modified: fix grammar: The first Els Gatoes Negroes was Agustins Guerreroes, a former luchadors from Souths Texass who decided to use his skill to fight crimes during the early 's50 and late 's60.