His parents were José de la Luz Hernández and Amadita Rodríguez. He has a brother, Héctor Hernández. He was left fatherless, and his mother took him to Mexico City in 1956. He studied accounting, although his vocation was acting. He married Edith Sánchez, with whom he became the father of Aarón and Edith.
He debuted as a theater actor in the 1950s, in the play Las manos sucias, by Jean-Paul Sartre, with the participation of Tere Velázquez, Carlos Bracho and Sergio Barrios. Once settled in Mexico City, he entered the Instituto Cinematográfico, Teatral y Radio-Televisión, of the Asociación Nacional de Actores (ANDA), directed by Andrés Soler. In 1958, he participated in another festival, with the ICT's Moncell group, where he starred in El gesticulador, a play by Rodolfo Usigli.
He made his film debut in 1965 with Viento negro, as a supporting actor. After participating in the play Moby Dick, he was called by Ernesto Alonso to work in television. He made his television debut in the soap opera La mentira (1965), with Julissa, Enrique Lizalde and Fanny Cano.
He worked in the theatrical company of the Mexican Social Security Institute.
Aarón Hernán served as Secretary of Internal and External Affairs and Treasury of the National Actors Association (ANDA) on several occasions and served as General Secretary from 1998 to 2002.
In his last year of life, his children wanted to declare him legally incompetent to administer his assets, so he had to defend himself legally and moved to La Casa del Actor, ANDA's retirement home. There he had a fall that caused him to fracture his femur. Complications following surgery caused a lethal myocardial infarction.
2020
as Don Miguel
2016
2013
as Gustavo
2013
as Abuelo Gaytán
2013
as Don Vicente Cáceres
2011
as Oscar
2010
as González del Río
2010
as Papá María
2009
as Porfirio Betancourt
2008
as Angelito
2007
as Padre Augusto
2004
as Arthur Stone
2004
as Joaquín Arcadio
2001
2000
as Padre Constantino
1999
as Lauro Sánchez
1999
1996
as Father Julián de Ibarne
1996
as Don Alonso Garcés del Valle
1995
1994
as Bernal Estrada
1993
as Priest Mora
1991
1990
1990
1990
as Sacerdote
1988
1988
as Lic. Paniagua
1988
as Nicias
1987
as Carlos' Father
1985
1983
as Médico
1983
as Teacher Horacio
1981
as Javier
1981
1980
1979
as Don Luis Iriarte
1979
1978
as Fray Pedro Francisco de Cañas
1978
as Eduardo
1977
as Miguel
1976
as Reyes Domínguez
1976
as Pascual Tamayo Chávez
1976
1976
as Carlos
1975
as León Gustavo Romero
1975
as Felipe
1974
1972
1972
1972
1971
as Patricio de Castro
1970
1969
1969
1969
as Adam, abogado defensor
1969
1967
1967
1967
as Fernández (uncredited)
1967
as Representanre de Bolognia (uncredited)
1967
as Gynecologist
1966
1966
as Esposo secuestrado
1965
as Telegrafista
1965
1963
as Esteban
1963
1960
as Abelardo