Alien, Predator, and Alien vs. Predator were closely related sci-fi horror series as follows: The Alien series is made up of seven movies, and the Predator series also has seven movies. The Alien vs. Predator series is made up of the cross-editing of the Alien series and the Predator series, a total of three movies. The Alien series described the discovery and invasion of an Alien-like creature on Earth, while the Predator series described the wandering and fighting of an Alien-like creature in the universe. Aliens and Predators were both representatives of alien creatures. The Alien and Predator series both took place in the future or near future, and both involved technological advancement and the emergence of extraterrestrial life forms. At the same time, there were conflicts and battles between humans and extraterrestrial life forms. The female protagonist of the Alien series is the Alien Predator. The female protagonist of the Alien vs. Predator series is the Predator. The female protagonist of the Alien vs. Predator series is a mixture of Predators and Aliens. Alien, Predator, and Alien vs. Predator had many movies in each series. The Alien series consisted of seven movies: Alien, Alien 2, Alien 3, Alien 4: Resurrection, Alien 5: Contract, Alien 6, and Alien: Contract. The Predator series consisted of seven movies: Predator, Predator 2: Alien Rises, Predator 3: Never Rest, Predator 4: The Catastrophe of Atlantis, Predator 5: The Rise of the Punisher, Predator 6: Space Travel, and Predator: Everlasting Legacy. The Alien vs. Predator series had three parts: Alien vs. Predator, Alien: Predator, and Alien: Contract.