Cocoons are made from the oral secretions of the Xenomorph (Alien). They are used to keep hosts near eggs or to turn the hosts themselves into eggs over time. behind the scenesEdit H.R. Giger's concept for the cocooning process. Retrieved from "https://alienanthology.fandom.com/wiki/Cocoon?oldid=17008" Categories: Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.