The original Alien in Alien was played by Bolaji Badejo, whereas the First Acheron Queen and her fellow aliens from Aliens were all portrayed by Carl Toop. The Xenomorphs are predators with the goal of expanding their own species and killing or infecting any life they encounter. Xenomorphs are asexual, with a fertile Queen producing Xenomorph eggs.
They are a hostile and parasitic extraterrestrial species that are known for their acidic blood, their pharyngeal jaw and their biological life cycle, in which their offspring are implanted inside living hosts before erupting violently from their chests, which is in many ways their most disturbing feature. Predator: Requiem, and as minor antagonists in the 2012 spinoff Prometheus. They also serve as the main antagonists of the 2014 game Alien Isolation and of the crossover films Alien vs. The Xenomorph XX121 species, more commonly known as Xenomorphs, are the titular main antagonists of the Alien franchise, consisting of the films Alien, Aliens, Alien 3, Alien: Resurrection and Alien: Covenant, as well as any comic, novel and game tie-ins or original products.