Alien (Signs)

This article is about the sentient alien race featured in the movie signs, directed by M. Night Shyamalan. They are very athletic, being able to jump up to the roof of a farmhouse that is about ten feet off the ground. Their skin changes colors, giving them a camoflauge ability- which is how they remain unseen throughout most of the movie. They also have a spike that protrudes from their wrists that expels poisonous gas. Water is their weakness- shown at the end of the movie when the one in the farmhouse falls backwards into a piece of furniture, toppling a glass of water on top of it, causing the water to drip on it. The water seems to "burn" the alien and cause it great amounts of pain.

Trivia

 * Although the reason for the alien's attack has never been officially stated, a survivor heard on the radio in the basement states that they came to harvest humans. He backs this up by stating that he and his friend saw the aliens poison his friend's family and drag away the bodies.
 * With this species of alien, water acts as a very corrosive form of acid.
 * As shown they obviously have the technology to navigate between planets, but it's unknown if they have any type of advanced weaponry or not. it is possible that they simply choose not to use advanced weaponry, for cultural or technological reasons.
 * For some reason, despite having achieved intergalactic travel capabilities, the aliens wear no clothes. This may be due to their need to exploit their natural skin's abilities of changing color like a stealth suit. While from our perspective it may seem odd that a space-faring species would not to wear any type of clothing, it should be noted that clothes are a human concept and are usually dictated by culture. Since this is an alien species, they can't be expected to mirror every aspect about us regardless of how intelligent or technologically advanced they are,