Xenomorph

First revealed in the 1979 Ridley Scott film Alien, the Xenomorph continued to terrify and entertain audiences in a series of sequels starting with the widely praised Aliens and ending with the critically panned Jean-Pierre Jeunet directed Alien: Resurrection.

With a brief appearance of the creature's skull in the background of a spaceship scene in the film Predator II, the AvP franchise was then spawned, leading to critical panning and a partial retcon in the form of the "Deacon" precursor shown in the prequel film Prometheus, which people also hated.

The design of the Alien Xenomorph is perhaps the most famous creation of award-winning artist HR. Giger.