30 Most Ridiculous Alien Invaders Of All Time

21. Alien Sex Pest - Species II

When the first man on Mars is contaminated by alien DNA, he breaks sexual quarantine back on Earth for a date with two sisters who “share everything”, including the stomach-busting parasites he passes on to them.

As the parasites develop, they’re housed in a secret place until they’re discovered (and destroyed) by Michael Madsen and his team. So their purpose in the film was….?