No biographical details are currently known.
With only a small known filmography, all in rather miniscule roles, it could be very possible that there may be some additional uncredited roles to be found. Since starting his topic I have discovered he has a second IMDb page under "Joaquin Ferrer", a spelling he was credited with on 3 occasions - this has added a further 3 roles to his filmography.
- Los cuervos .... Representative of Don Javier (credited)
- La spada del Cid .... Villager who recognises the sword (uncredited)
- Los atracadores .... Priest at the execution (credited)
- A tiro limpio .... Victim in office hold-up (uncredited)
- La cuarta ventana .... Man with the girls in the nightclub (credited as "Joaquin Ferrer")
- Noche de verano .... Associate of Alberto (credited as "Joaquin Ferrer")
- Senda torcida .... Cinema manager (credited)
- Trampa mortal .... (credited as "Joaquin Ferrer", but not found)
- El mujeriego .... Lawyer (credited)
- Pistoleros de Arizona .... Card player (uncredited)
- Una pistola per Ringo .... The Judge (uncredited)
- El triangulito .... Shop customer testing the bed (credited)
- Adiós, Priscila (1964 TV episode - Novela) IMDb
- Hoy sube el novio (1964 TV episode - Novela) IMDb
- Nuestro amigo el libro (1964 TV series) Ep.: "El falso Don Gil", IMDb
- Sospecha (1964 TV series) Ep.: "Un solo error", IMDb
- La 'mini' tía (1968) IMDb
- Imaginando la oscuridad (2021 documentary) IMDb (under "Joaquin Ferrer" profile) as Self. The chances of him still being alive to appear in a documentary in 2021 seemed extremely improbable, and indeed the "Joaquin Ferrer" here is a Cuban artist of the same name.