Jawa Ex Machina
Veteran
But that was five years after THE THING FROM ANOTHER WORLD. Can you think of a movie before 1951 that used that concept?That's exactly what Invasion of the Body Snatchers was, made in 1956.
Sure, but how many in the post-WWII era?Count Orloff in Nosferatu may not have looked very human, but all of his successor cinema vampires do, which gives us human-looking cinema monsters back as far as the 1930s.