He was born Joaquín Díaz Muntané on August 26th 1930 in Barcelona.
Joaquín began his career as a stage actor at the age of 6 in the company of his aunt, Juanita Diaz. This led to him joining the Radio Barcelona stage team, where he would remain for 15 years. His earliest role listed on the Spanish dubbing website Eldoblaje.com dates from 1943 when he would have been 13. Quite astonishingly the website lists over 2,500 roles dubbed by him. He was the regular Spanish voice of actors such as Jack Lemmon, Rod Steiger, Peter Ustinov, Alberto Sordi, Ian Holm, Telly Savalas and others. He also worked as a dubbing director and was equally at home working in Castellano or Catalan.
In 1961, 18 years after beginning his dubbing career, Joaquín began to also appear as an actor in films, mostly in small parts. He was quite busy as an actor in the 60's, with more sporadic appearances later, simultaneously continuing dubbing work.
He died in Barcelona on September 4th 2013, aged 83.
His autobiography, "Mi voz en millones de fotogramas" (My voice in millions of frames), was published posthumously in 2015.
His biographical details are gathered from numerous sources including interviews and obituaries.
- Tierra de todos …. Soldier (uncredited)
- Un demonio con ángel …. Bermúdez (credited)
- Asso di picche - Operazione controspionaggio …. Oakes (credited)
- La dama de Beirut …. Selim (credited)
- Dinamita Jim …. Selim (credited)
- L'armata Brancaleone …. Guccione (credited)
- Su nombre es Daphne …. role? (poster credit)
- El primer cuartel …. Don Tomás (credited)
- Percy Stuart (TV series) S.2, Ep. 11: "Manschettenknöpfe" …. Juan Varos (credited)
- ¿Quién soy yo? …. Guest at the celebration (credited)
- El misterio de la vida …. Dr. Antonio Ansúrez (credited)
- Les belles au bois dormantes …. Inspector Granier (uncredited)
- Los buitres cavarán tu fosa …. Ted Salomon (credited as "Joaquin Dia")
- El virus del poder …. (credited as "Colonel", but not found)
- La ciudad de los prodigios .... Don Humbert Figa (credited)
- Las estrellas (1961) IMDb as Prestamista
- Hora once (1970 TV series) 2 episodes, IMDb
- Ficciones (1972-74 TV series) 4 episodes, IMDb
- Amor de perdición (1973 TV movie) "Novela" series, IMDb
- Tierra para morir (1974 TV movie) "Novela" series, IMDb
- Teatro Club (1977 TV series) Ep.: "Historia de la divertida ciudad de Caribdis", IMDb as Grand Duke
- El mundo sexual de la pareja (1982) IMDb as Sexologist