El Gato Negro (The Black Cat) is the name of two fictional American comic book superheroes created by Richard Dominguez and featured in the Azteca Productions' Universe.

In the comic's continuity, Agustin Guerrero was the first to hold the title of El Gato Negro in the 1950s, creating the pseudonym in order to form a successful career in lucha libre.

Although the character officially retired from his former vigilante-activities, Agustin did appear in costume at the climax of the first story-arc entitled, "Unknown passing, Unforgettable Return" (El Gato Negro #1-3).

His given name was borrowed from Mexican revolutionary Francisco "Pancho" Villa, while the surname Guerrero was mainly chosen for its English-translation "warrior", although Dominguez has hinted at a more historical significance, one which has yet to be revealed.

[4] The character's personality and visual design was greatly influenced by Dominguez's own favorite pulp and comic book superheroes (most noticeably Batman) along with classic Mexican luchadors such as El Santo.

Separated from the Texas Battalion while on a raid, Agustin became lost in the harsh jungles of Korea only to encounter an exiled Japanese warrior and assassin known as "The Black Cat".

Recognizing a recurring cat motif in his life, Agustin chose the identity of El Gato Negro, promising to bring bad luck to his opponents.

Deciding to take action, with the permission of his grandfather, Francisco adopted the moniker of El Gato Negro and operated as the Nocturnal Warrior for several months, successfully fighting against crime.

Despite being popular with the citizens of his community, El Gato Negro is constantly being hunted by local law enforcement led by police Captain Miguel Bustamonte, Francisco's best friend and Mario's older brother.

As of January 2016, Richard Dominguez is currently working with writer-turned-director Michael S. Moore in directing and filming a live-action short-film adaptation titled El Gato Negro: Prey.