Similar creatures of a slightly different designs named the 'Deacon' makes a brief appearance in the Ridley Scott film Prometheus (2012). The species' design and life cycle have been extensively augmented, sometimes inconsistently, throughout each film. The practical effects for the Alien's head were designed and constructed by Italian special effects designer Carlo Rambaldi. Giger, originating in a lithograph titled Necronom IV and refined for the series' first film, Alien.

The Alien design is credited to Swiss surrealist and artist H. It was also featured in cameo appearances in the Predator franchise entries Predator 2 (1990), Predators (2010), and The Predator (2018). The species made its debut in the film Alien (1979) and reappeared in the sequels Aliens (1986), Alien 3 (1992), and Alien Resurrection (1997), as well as the crossover films Alien vs.

The Alien (also known as Xenomorph or Internecivus raptus 'murderous thief' is a fictional endoparasitoid extraterrestrial species that is the eponymous antagonist of the Alien film series.

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