He studied graphic design at the Universidad Autónoma Metropolitana. For twenty years, he has focused on projects that use design and visual arts techniques for literary and editorial illustrations. He has designed and illustrated 40 books and has received international awards. His work has been included in art exhibits in Mexico, Japan, Italy, and France. Monroy has also been a professor at different universities, a member of several professional associations, and has been a juror in international competitions.