The first of his extensive Cuban family to be born in the United States, Hernandez writes in a genre of his own making, which he calls Transhuman Mambo (also the title of his 2013 short story collection).
According to Hernandez this neologism is based on the popular coupling of a scientific term with a musical form (e.g. space opera), which accurately describes the combination of his love of science fiction with the Cuban culture of his upbringing.
Deeply influenced as a child by the work of Isaac Asimov, Hernandez connected in a personal way to this immigrant whose first language was also not English.
Whilst working as an administrator of the Miami Dade College Library, Hernandez has published a number of short stories in science fiction publications, including “A Thing with Soft Bonds”, which was included in Near Kin: A Collection of Words and Art Inspired by Octavia E. Butler (2014) and which was nominated for a Pushcart Prize.
Hernandez's short stories have also appeared in the popular and long-running Man-Kzin Wars series created by Larry Niven published by Baen Books.