Simplify the following text for a Grade 10 native English-speaking person.
Original: 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 .
Simplified: El Gato Negro ( in English â The Black Catâ ) is the name of two fictional superheroes that appear in comic books published by Azteca Productions .