Science fiction has long had an interest in alien life and, unsurprisingly, the genre has created some of the weirdest and most unsettling beings to appear on the big screen. Very often, the strangest alien beings are meant to tap into the collective fears and anxieties of the audience, allowing them to encounter these things in the relatively safe environment of the movie theater. Just as importantly, they also embody the threat of the unknown, the realms of space that are resistant to human ways of understanding the biological principles of creation.

https://screenrant.com/alien-scifi-weirdest-movies/