Films: The Abyss (1989)
Alias: Non-Terrestrial Intelligence
Height/Weight: Twice that of average humans.
Affiliation: Neutral, leaning on Good
Summary: Not all aliens strike the Earth to make their claim. Some find it just a bit more comfortable where humanity has a harder time reaching them. And under the sea, where just about everything is alien to us, they'd fit right in.
History: At the peak of U.S.-Soviet tensions, the two factions are now rushing to investigate strange phenomena near the Cayman Trough in the Caribbean Sea. What they find is most unexpected. Alien life forms known as NTL have established a base at the very bottom, and while they're curious with their human visitors, not even they can stop the inner conflict going on. Or can they?
Notable Kills: None.
Final Fate: After a benevolent NTI rescues the only person to reach their base, the aliens suddenly summon gigantic tsunamis across the world...and stop them just short of destroying anything. It is revealed that the aliens were observing humanity, and merely wanted them to stop fighting amongst one another. They soon part from the Earth after all is said and done.
Powers/Abilities: Can manipulate water constructs and survive miles below where the pressure is unbearable.
Weakness: Anything conventional.
Scariness Factor: 3-Admittingly, it is a scary thought to have aliens living below, fully capable of controlling over 70% of the world to kill us. But thankfully, these beautifully bizarre aliens are a diplomatic sort, and only want the best for other intelligent life.
Trivia: -Stan Winston was approached for the effects, but he opted to do "Leviathan" instead.
-James Cameron was inspired to make this story when he attended a lecture about deep sea diving during his high school years.