Alien (Earth vs. the Flying Saucers)

This unnamed humanoid species were almost entirely wiped out by the destruction of their solar system, with their last members being killed in a failed attempt to occupy Earth.

Biology
Most of the aliens' biology is unknown, but it is known that they are humanoids who bear at least some resemblance to the classic Grey. Their heads are hairless with flat noses, perpetually frowning mouths, large, dark eyes, no external ears, and thin, wrinkled greyish-brown skin. However, the aliens who were seen by Humans had artificially prolonged their lifespans with life support suits, so it is possible that their natural appearance is different from what was seen when unmasked, such as not being as thin or wrinkled. When killed, their bodies would soon dissolve into nothingness, although this may also be due to the strain put on their bodies from their extended lifespans.

Culture and society
The aliens were known to be emotionless, seeking another habitable planet to relocate their species to after their system's destruction. They saw Earth's space-related technologies as primitive, and due to their emotionless nature, had no remorse in causing widespread destruction on Earth.

Technology
The aliens achieved highly advanced technology, utilizing flying saucer-shaped spacecraft capable of crossing solar systems. These ships have cylindrical landing gear, and can project a forcefield around the ship's immediate area, which is impervious to Earth's ballistic weaponry. They had also created life support suits capable of keeping them alive for extended periods of time. While appearing to be made of metal, their suits are actually solidified electricity, and are very light.

Appearances

 * Earth vs. the Flying Saucers (1956)