In the early-1960s, Eurowesterns, which would evolve into the popular Spaghetti Westerns, were being shot in Almería.
Pérez was among a number of Spanish character actors to find fame in this new genre.
His background playing villains made him ideal for being cast as a Mexican bandit or henchman.
Pérez's prolific appearances made him was one of the most recognizable Spanish actors involved in the genre, rivaling those of fellow Spaghetti Western regulars such as Aldo Sambrell and Andrea Scotti, and is considered one of the best villains of the era.

His first roles were in Savage Guns and Gunfighters of Casa Grande (1964), one of the genre's earliest films, and continued working at its height with memorable performances in Bullets Don't Argue (1964), Minnesota Clay(1964), A Pistol for Ringo (1965), Seven Dollars on the Red (1966), Arizona Colt (1966), A Bullet for the General (1966), Blood River (1967), I Want Him Dead (1968), 100 Rifles (1969), A Bullet for Sandoval (1969), and into the "twilight" Spaghetti Westerns Bastard, Go and Kill (1971), Amigo, Stay Away (1972), and Cut-Throats Nine (1972).
His last Italo-Western appearance, Amigo, Stay Away, was an uncredited role as a peddler.

In between Spaghetti Westerns, Pérez also had supporting roles in The Ceremony (1963), Operation Atlantis (1965), Fall of the Mohicans (1965), Con el viento solano (1966), and Bewitched Love (1967).
In the early-1960s, Eurowesterns, which would evolve into the popular Spaghetti Westerns, were being shot in Almería. Pérez was among a number of Spanish character actors to find fame in this new genre. His background playing villains made him ideal for being cast as a Mexican bandit or henchman. Pérez's prolific appearances made him was one of the most recognizable Spanish actors involved in the genre, rivaling those of fellow Spaghetti Western regulars such as Aldo Sambrell and Andrea Scotti, and is considered one of the best villains of the era.
His first roles were in Savage Guns and Gunfighters of Casa Grande (1964), one of the genre's earliest films, and continued working at its height with memorable performances in Bullets Don't Argue (1964), Minnesota Clay(1964), A Pistol for Ringo (1965), Seven Dollars on the Red (1966), Arizona Colt (1966), A Bullet for the General (1966), Blood River (1967), I Want Him Dead (1968), 100 Rifles (1969), A Bullet for Sandoval (1969), and into the "twilight" Spaghetti Westerns Bastard, Go and Kill (1971), Amigo, Stay Away (1972), and Cut-Throats Nine (1972). His last Italo-Western appearance, Amigo, Stay Away, was an uncredited role as a peddler.
In between Spaghetti Westerns, Pérez also had supporting roles in The Ceremony (1963), Operation Atlantis (1965), Fall of the Mohicans (1965), Con el viento solano (1966), and Bewitched Love (1967).
José Manuel Martín