Uses the larval facehugger to implant an embryo into the host. After gestation the alien evacuates via the chest cavity. Has a potent acidic discharge.
Ampulex Compressa Giganteus
Genetically modified species of wasp which injects its eggs into a host, eventually changing the host into a zombie. Unleashed upon the town of Willamette, Colorado.
Annelids (The Many)
Worm-like creatures controlled by a hive-mind which calls itself The Many. Invaded the spacecraft Von Braun, causing most crew members to mutate.
Part-mechanical insect-like aliens who can infect both machines and living creatures. Collectively controlled by the Aparoid Queen, who attacked the planet of Corneria.
Can possess humans, and attacks by bursting out from within the body - a sight which is rather detrimental to one's sanity.
A parasitic worm which resides within the host and consumes their body from the inside. Usually found sliding across the floor in West Mansion.
A species that infects Bulborbs, making it grow a leafy stalk from its back. Still has the voracious appetite of a Bulborb.
Controls the host by wrapping itself around the spine. Discovered while the Nazis were searching for Beliar's skull.
Tendriled parasites which enter other living creatures via the mouth. Discovered when unwittingly released by an offshore oil well owned by the Russian mafia.
Man-made parasites developed by Delphi, whose presence is indicated by chiral reactions. Kyriaki and Pempti are examples of GUILT strains.
Capable of leaping long distances, they attach to a host's head, mutating it into a zombie-like state. More agile and venomous variants exist.
Pale white wyverns which can conduct electrical currents through their body. Khezu whelps are injected into hosts to grow and develop.
Alters its host's behavior, and may emerge when the host body takes enough damage. Originally used by the cult Los Illuminados to recruit members. Sensitive to bright lights.
Game or Series
Intending to drain the planet's energy to produce its spawn, it remained dormant until the year AD 1999, when it plunged the world into an apocalyptic state.
Usually appears as a jellyfish-like organism with distinctive red nuclei and uses mandibles to drain life energy from other creatures.
Buries into the brain, subjecting its host to violent delusions and their deepest terrors. Can travel in mobile colonies known as 'boils'.
Originally in a dormant, symbiotic relationship with higher organisms, they can be 'awakened' and controlled by the collective entity known as Eve.
Extremely aggressive bacterial species which spreads by infecting dead bodies. They can repurpose parts of the corpse and transform it into a new form. Mostly invulnerable except against dismemberment.
A greedy squid-like creature which replaces the head of its host, allowing it to survive on land. Oktigi have taken a liking to business suits and fine cigars.
Spawned by Putrid Defilers. Gestates in the brains of demons and feeds off demonic thoughts until the host dies, at which point they burrow out of the skull to find a new host.
Tōchūkasō mushrooms grow on the back of its crab-like host's body. They eventually fuse into one large mushroom when they completely control the host.
Thick-armored arachnid which plagued the Great Deku Tree by draining its energy to produce offspring. Her single giant eye acts as a weak point.
Causes the host to experience extreme feelings of anger, aggression or depression. In advanced infections, takes over the host's mind and causes them to commit vile crimes.
Parasitic organisms which consume the biomass of sentient life forms. The final life stage and highest ranking of the Flood is known as the Gravemind.
Floating gelatinous parasites native to SR388, which can mimic the DNA and memories of host organisms.
A ruthless species which seeks to assimilate other advanced species. Connected by a hive-mind, Zerg parasites can attach to enemy units and be used for reconnaissance.
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