Star Pinky Montilla appeared to have the superhero market covered, as she also played the role of Batgirl in Fight Batman Fight! the same year as this movie, and would go on to play Fantastika in 1976's Fantasitka vs. Wonderwoman.
Unlike the Supergirl from the comics, the only power she inherits in this film is flying.
The main villain in both this film and the official American production of Supergirl (1984) made by Warner Brothers was an evil sorceress. In this version, she was played by Odette Khan and Faye Dunaway played the role in the 1984 version.
The film was thought to be lost until a copy on a beat up 16mm reel was found in 2015.