Related Clues:
- Film monster of 1958 and 1988
- Threatening force
- Green-card holder
- Xenophobe's bugaboo
- Film that happens aboard the Nostromo
- Tabloid photo subject
- Embryonic shape, at first
- Imaginary creature
- Not of this earth
- Sigourney Weaver classic
- Visitor from another planet
- Gooey mass
- Sci-fi figure
- Visitor from the stars
- UFO pilot?