Origin
The Rio Kid is a western hero.
Creation
The Rio Kid was originally a Nedor Comics character. Like most Nedar characters he is now in the Public Domain. The Rio Kid started, like so many of Nedor characters did, as a text Pulp Magazine character with his own title that ran from 1935 to 1955, the longest run for a single character Pulp. He didn’t last as long in the comics.