parasitic being theme

A being that lives as a parasite off of other life forms.

Examples

Bug-like neural parasites from outer space nearly took over Starfleet by attaching themselves to important officers' brainstems in tng1x25 "Conspiracy".

26 total · 8 choice · 18 major

StoryLevelMotivation
bbf3x07 choice centipede like things attached themselves to peoples' spines
ent1x22 choice A parasitic, web-spinning, alien boards Enterprise and starts kidnapping members of the crew.
gdtcoc2022e03 choice The antagonist of the story is revealed to be an alien being that travels to other planets, most recently Earth, and implants itself in the bodies of beings there, taking control of some and feeding on others.
movie: Alien (1979) choice The Alien used a human surrogate to complete its development from a juvenile to adult.
movie: Alien 3 (1992) choice The alien creature used human surrogates to complete its development from a juvenile to adult.
movie: Alien Resurrection (1997) choice The Aliens parasitized human hosts in order to breed.
movie: Alien: Covenant (2017) choice The Aliens.
movie: Aliens (1986) choice The aliens used human surrogates to complete its development from a juvenile to adult.
movie: Alien Raiders (2008) major The team of rogue scientists was working to eradicate grotesque alien parasites.
movie: Alien vs Predator (2004) major The Aliens used human hosts to multiple their numbers.