Star Pilot (Italian: 2+5: Missione Hydra) is a 1966 Italian science-fiction film directed by Pietro Francisci. It stars Leonora Ruffo as Chaena, the commander of a spaceship from the constellation Hydra which has crashed on the island of Sardinia. An Earth scientist and his companions are abducted by the aliens and forced to repair the ship, and are then taken to Hydra for the purpose of genetic research. Once in space, the film uses stock special-effects footage from Toho Studio's films Invasion of Astro-Monster and Gorath to depict a pursuit of Chaena's ship and an ecological catastrophe on Earth. References to "Star Fleet", "Star Fleet Command", "Warp Speed", and "Impulse Drive", were all incorporated into the "Star Trek" television series that followed immediately thereafter. The wardrobe worn by actresses Leonora Ruffo (1935-2007) and Leontine May was a less direct influence.‹See TfD› In the fall of 1977, to quickly capitalize on the public's fervor for sci-fi movies following the unexpected success of Star Wars, the film was dubbed in English and released in the United States under a new title.
Zaat (also known as The Blood Waters of Dr. Z, Hydra (Canadian bootleg title), Attack of the Swamp Creatures (US bootleg title) and Legend of the Zaat Monster (proposed re-release title) is a 1971 American cult science-fiction/horror film that was written, produced and directed by Don Barton. It gained significant exposure when it was used in an episode of movie-mocking television series Mystery Science Theater 3000 in May 1999.
Maneater of Hydra is a Spanish-German co-production released in 1967 directed by American expatriate Mel Welles. The alternate titles include La isla de la muerte, Island of the Doomed and The Blood Suckers (UK title). The horror film is set on a remote island off the shore of an unidentified European country, in which the central character is a mad scientist (Cameron Mitchell) who creates hybrid trees that feed on human blood.