"Ride, Bat-Hombre, Ride!" from Batman #56 (December 1949-January 1950)

from Batman #56 (cover-dated December 1949-January 1950, listed on the GCD with an on-sale date of October 10, 1949):




So, you have your generic non-existent Latin American / South American country of "Mantegua", and the ailing President from there (who happens to be visiting Gotham City?) wants Batman to come to Mantegua to train a person to be that country's version of Batman . . . Bat-Hombre!
(Why the President kept "Bat" in English but translated "man" to the Spanish "hombre" is a bit puzzling . . . he could have gone fully in Spanish and called the new hero "El Hombre Murciélago".)

It's a fun but somewhat silly story, and it does have some interesting points that arise from it.

First, five years later, in Detective Comics #215 (January 1955), DC would introduce a South American version of Batman in the story "The Batmen of All Nations"

Second, in Jonah Hex #2 (May-June 1977), we have the introduction of an 19th century desperado named El Papagayo.



He even got an entry in Who's Who: The Definitive Directory of the DC Universe Vol. VII (September 1985):


And then Grant Morrison (yeah, him) reintroduced a "present day" version of El Papagayo in Batman, Inc. #3 (March 2011) in a story where Batman teams up with El Gaucho.