The below listed films are those that I've flagged as a must to avoid for anyone but the most deluded completist.  You might think that this list would include those films that I think are the worst the lucha genre has to offer, but you would be wrong.  In fact, many of the worst movies in the lucha genre still have quite a lot to offer that is potentially of interest to the viewer, be it incompetence that is astonishing to the point of ecstasy, head-spinning accidental surrealism, or sheer negligence that is just so ballsy one can't help but feel a guilty masochistic thrill at being at its receiving end.  No, these films listed below are simply those that have absolutely nothing to offer in terms of entertainment, novelty value or historical interest.  While each boasts a long rap sheet of offenses that are uniquely their own, the one inexcusable quality they all share is that they are boring.  So boring, in fact, that you would rather watch your own slow suicide than sit through them.  (Not to put too fine a point on it, of course.)

El Aguila Real aka Santo y la Tigresa (1971) #
(The Royal Eagle)

El Hijo de Alma Grande (1974) #
(The Son of Alma Grande)

Santo contra los Cazadores de Cabezas (1969) #
(Santo versus the Head Hunters)

Superzan el Invencible (1971) #
(Superzan the Invincible)

Triunfo de los Campeones Justicieros (1974) #
(Triumph of the Champions of Justice)

Vuelven los Campeones Justicieros (1972) #
(The Champions of Justice Return)