The ALIEN xenomorph is real.
The ALIEN xenomorph is a fictionalized version of the real thing. A species of black wasp found in Australia that injects eggs into caterpillars where the larvae eat there way through the host. The parasite can actually brainwash the host to defend the nest. A species of the wasp played a major role in the Norwegian horror series FORTITUDE.
https://www.amazon.com/Fortitude-Stanley-Michael-Gambon-Richard/dp/B00R0419HW/ref=sr_1_3?crid=3FIHQ8UPFXV95&dchild=1&keywords=fortitude+season+3&qid=1630209212&sprefix=fortitude%2Caps%2C198&sr=8-3