- Both are apocalyptic dramas
- Both are about alien type of species invading earth
- They both show how humans fight to survive
- In both dramas the aliens look quite similar, they resemble a squid with long tentacles
- Both have action scenes
-Action/Thriller/SciFi
-Protagonist is a female lead with supernatural ability found threatening by other characters
-Female lead trying to survive/hiding/fighting throughout the story
-Short watch (The Witch being a movie, Parasyte having only 6 episodes)