From the early sixties onward, Ariznavarreta played bit parts (often as henchmen) or did stunts for Western films shot in Spain, including Burt Kennedy's Return of the Seven and Land Raiders (with Telly Savalas). For Sergio Leone, he appeared in two of the "Dollars" trilogy, For a Few Dollars More (as a half-shaved gunman) and The Good, the Bad and the Ugly. Other film credits included the costume drama The Fifth Musketeer (with José Ferrer), the fantasy Hundra, the Italian TV movie Socrates, and Paul Naschy's Los cántabros.